./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/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 ../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.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.graphml --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 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:48:19,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:48:19,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:48:19,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:48:19,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:48:19,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:48:19,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:48:19,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:48:19,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:48:19,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:48:19,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:48:19,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:48:19,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:48:19,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:48:19,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:48:19,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:48:19,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:48:19,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:48:19,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:48:19,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:48:19,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:48:19,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:48:19,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:48:19,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:48:19,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:48:19,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:48:19,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:48:19,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:48:19,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:48:19,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:48:19,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:48:19,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:48:19,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:48:19,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:48:19,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:48:19,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:48:19,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:48:19,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:48:19,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:48:19,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:48:19,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:48:19,314 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:48:19,352 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:48:19,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:48:19,353 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:48:19,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:48:19,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:48:19,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:48:19,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:48:19,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:48:19,355 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:48:19,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:48:19,356 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:48:19,356 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:48:19,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:48:19,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:48:19,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:48:19,357 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:48:19,357 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:48:19,357 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:48:19,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:48:19,358 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:48:19,358 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:48:19,358 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:48:19,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:48:19,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:48:19,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:48:19,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:48:19,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:48:19,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:48:19,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:48:19,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:48:19,360 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:48:19,360 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:48:19,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:48:19,360 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:48:19,361 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:48:19,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:48:19,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:48:19,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:48:19,667 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:48:19,667 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:48:19,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i [2023-08-30 03:48:20,729 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:48:21,022 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:48:21,022 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i [2023-08-30 03:48:21,043 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20594cde4/e50ceb4780fe4bef8e6f21ae0225349d/FLAG3f0d850ba [2023-08-30 03:48:21,057 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20594cde4/e50ceb4780fe4bef8e6f21ae0225349d [2023-08-30 03:48:21,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:48:21,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:48:21,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:48:21,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:48:21,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:48:21,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:48:21" (1/1) ... [2023-08-30 03:48:21,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26075a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:21, skipping insertion in model container [2023-08-30 03:48:21,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:48:21" (1/1) ... [2023-08-30 03:48:21,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:48:21,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:48:21,536 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:21,537 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:21,537 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:21,538 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:21,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:48:21,592 ERROR L324 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) [2023-08-30 03:48:21,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74ca8bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:21, skipping insertion in model container [2023-08-30 03:48:21,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:48:21,593 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 03:48:21,594 INFO L158 Benchmark]: Toolchain (without parser) took 532.86ms. Allocated memory is still 71.3MB. Free memory was 46.7MB in the beginning and 48.6MB in the end (delta: -2.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 03:48:21,595 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 36.7MB in the beginning and 36.6MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:48:21,596 INFO L158 Benchmark]: CACSL2BoogieTranslator took 529.12ms. Allocated memory is still 71.3MB. Free memory was 46.5MB in the beginning and 48.6MB in the end (delta: -2.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 03:48:21,597 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 36.7MB in the beginning and 36.6MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 529.12ms. Allocated memory is still 71.3MB. Free memory was 46.5MB in the beginning and 48.6MB in the end (delta: -2.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1031]: 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: /usr/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 ../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.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.graphml --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 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:48:23,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:48:23,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:48:23,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:48:23,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:48:23,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:48:23,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:48:23,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:48:23,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:48:23,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:48:23,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:48:23,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:48:23,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:48:23,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:48:23,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:48:23,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:48:23,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:48:23,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:48:23,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:48:23,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:48:23,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:48:23,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:48:23,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:48:23,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:48:23,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:48:23,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:48:23,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:48:23,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:48:23,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:48:23,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:48:23,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:48:23,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:48:23,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:48:23,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:48:23,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:48:23,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:48:23,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:48:23,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:48:23,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:48:23,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:48:23,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:48:23,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 03:48:23,329 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:48:23,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:48:23,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:48:23,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:48:23,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:48:23,332 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:48:23,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:48:23,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:48:23,333 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:48:23,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:48:23,334 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:48:23,334 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:48:23,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:48:23,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:48:23,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:48:23,334 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:48:23,335 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:48:23,335 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:48:23,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:48:23,335 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:48:23,335 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 03:48:23,335 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 03:48:23,336 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:48:23,336 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:48:23,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:48:23,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:48:23,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:48:23,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:48:23,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:48:23,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:48:23,337 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 03:48:23,337 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 03:48:23,338 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:48:23,338 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:48:23,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:48:23,338 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 03:48:23,338 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:48:23,338 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:48:23,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:48:23,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:48:23,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:48:23,639 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:48:23,640 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:48:23,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i [2023-08-30 03:48:24,757 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:48:24,989 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:48:24,989 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i [2023-08-30 03:48:25,001 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b1b25e8/d0d7db20677049ce9caf7b10c9dd4893/FLAG3c543bec0 [2023-08-30 03:48:25,015 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b1b25e8/d0d7db20677049ce9caf7b10c9dd4893 [2023-08-30 03:48:25,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:48:25,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:48:25,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:48:25,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:48:25,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:48:25,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:48:25" (1/1) ... [2023-08-30 03:48:25,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3debb8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:25, skipping insertion in model container [2023-08-30 03:48:25,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:48:25" (1/1) ... [2023-08-30 03:48:25,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:48:25,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:48:25,519 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:25,519 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:25,520 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:25,521 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:25,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:48:25,577 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 03:48:25,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:48:25,619 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:25,619 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:25,620 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:25,620 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:25,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:48:25,647 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:48:25,682 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:25,683 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:25,683 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:25,684 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:25,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:48:25,768 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:48:25,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:25 WrapperNode [2023-08-30 03:48:25,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:48:25,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:48:25,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:48:25,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:48:25,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:25" (1/1) ... [2023-08-30 03:48:25,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:25" (1/1) ... [2023-08-30 03:48:25,844 INFO L138 Inliner]: procedures = 274, calls = 32, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2023-08-30 03:48:25,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:48:25,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:48:25,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:48:25,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:48:25,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:25" (1/1) ... [2023-08-30 03:48:25,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:25" (1/1) ... [2023-08-30 03:48:25,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:25" (1/1) ... [2023-08-30 03:48:25,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:25" (1/1) ... [2023-08-30 03:48:25,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:25" (1/1) ... [2023-08-30 03:48:25,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:25" (1/1) ... [2023-08-30 03:48:25,900 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:25" (1/1) ... [2023-08-30 03:48:25,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:25" (1/1) ... [2023-08-30 03:48:25,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:48:25,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:48:25,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:48:25,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:48:25,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:25" (1/1) ... [2023-08-30 03:48:25,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:48:25,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:48:25,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 03:48:25,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 03:48:25,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 03:48:25,980 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-08-30 03:48:25,980 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-08-30 03:48:25,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:48:25,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 03:48:25,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:48:25,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 03:48:25,981 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 03:48:25,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 03:48:25,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:48:25,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 03:48:25,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:48:25,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:48:25,983 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 03:48:26,131 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:48:26,132 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:48:26,614 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:48:26,621 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:48:26,621 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 03:48:26,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:48:26 BoogieIcfgContainer [2023-08-30 03:48:26,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:48:26,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:48:26,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:48:26,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:48:26,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:48:25" (1/3) ... [2023-08-30 03:48:26,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b7412dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:48:26, skipping insertion in model container [2023-08-30 03:48:26,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:25" (2/3) ... [2023-08-30 03:48:26,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b7412dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:48:26, skipping insertion in model container [2023-08-30 03:48:26,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:48:26" (3/3) ... [2023-08-30 03:48:26,629 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2023-08-30 03:48:26,643 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:48:26,643 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2023-08-30 03:48:26,643 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:48:26,744 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 03:48:26,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 204 transitions, 418 flow [2023-08-30 03:48:26,827 INFO L130 PetriNetUnfolder]: 14/202 cut-off events. [2023-08-30 03:48:26,829 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:48:26,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 202 events. 14/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 634 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2023-08-30 03:48:26,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 204 transitions, 418 flow [2023-08-30 03:48:26,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 202 transitions, 410 flow [2023-08-30 03:48:26,843 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:48:26,850 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 202 transitions, 410 flow [2023-08-30 03:48:26,853 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 202 transitions, 410 flow [2023-08-30 03:48:26,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 202 transitions, 410 flow [2023-08-30 03:48:26,895 INFO L130 PetriNetUnfolder]: 14/202 cut-off events. [2023-08-30 03:48:26,895 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:48:26,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 202 events. 14/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 638 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2023-08-30 03:48:26,900 INFO L119 LiptonReduction]: Number of co-enabled transitions 7680 [2023-08-30 03:52:26,058 WARN L222 SmtUtils]: Spent 2.41m on a formula simplification. DAG size of input: 224 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:53:27,940 WARN L222 SmtUtils]: Spent 1.03m on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:55:40,413 WARN L222 SmtUtils]: Spent 2.21m on a formula simplification. DAG size of input: 224 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:56:43,911 WARN L222 SmtUtils]: Spent 1.06m on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:57:50,742 INFO L134 LiptonReduction]: Checked pairs total: 13073 [2023-08-30 03:57:50,742 INFO L136 LiptonReduction]: Total number of compositions: 259 [2023-08-30 03:57:50,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:57:50,757 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@9260949, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:57:50,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2023-08-30 03:57:50,760 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-08-30 03:57:50,760 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:57:50,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:57:50,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 03:57:50,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:57:50,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:57:50,765 INFO L85 PathProgramCache]: Analyzing trace with hash 23001, now seen corresponding path program 1 times [2023-08-30 03:57:50,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:57:50,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174669654] [2023-08-30 03:57:50,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:57:50,775 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 [2023-08-30 03:57:50,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:57:50,783 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) [2023-08-30 03:57:50,784 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 [2023-08-30 03:57:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:57:50,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 03:57:50,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:57:50,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:57:50,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:57:50,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:57:50,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174669654] [2023-08-30 03:57:50,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174669654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:57:50,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:57:50,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:57:50,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045520825] [2023-08-30 03:57:50,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:57:50,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:57:50,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:57:50,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:57:50,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:57:50,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-08-30 03:57:51,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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) [2023-08-30 03:57:51,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:57:51,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-08-30 03:57:51,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:57:52,874 INFO L130 PetriNetUnfolder]: 1548/2409 cut-off events. [2023-08-30 03:57:52,874 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 03:57:52,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4852 conditions, 2409 events. 1548/2409 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11327 event pairs, 1313 based on Foata normal form. 0/1122 useless extension candidates. Maximal degree in co-relation 4796. Up to 2400 conditions per place. [2023-08-30 03:57:52,893 INFO L137 encePairwiseOnDemand]: 443/463 looper letters, 60 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-30 03:57:52,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 254 flow [2023-08-30 03:57:52,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:57:52,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:57:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2023-08-30 03:57:52,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773218142548596 [2023-08-30 03:57:52,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2023-08-30 03:57:52,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2023-08-30 03:57:52,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:57:52,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2023-08-30 03:57:52,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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) [2023-08-30 03:57:52,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 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) [2023-08-30 03:57:52,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 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) [2023-08-30 03:57:52,943 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 140 flow. Second operand 3 states and 663 transitions. [2023-08-30 03:57:52,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 254 flow [2023-08-30 03:57:52,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:57:52,949 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 124 flow [2023-08-30 03:57:52,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2023-08-30 03:57:52,955 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2023-08-30 03:57:52,955 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 124 flow [2023-08-30 03:57:52,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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) [2023-08-30 03:57:52,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:57:52,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 03:57:52,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-30 03:57:53,180 WARN L477 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 [2023-08-30 03:57:53,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:57:53,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:57:53,181 INFO L85 PathProgramCache]: Analyzing trace with hash 23029, now seen corresponding path program 1 times [2023-08-30 03:57:53,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:57:53,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089591656] [2023-08-30 03:57:53,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:57:53,182 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 [2023-08-30 03:57:53,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:57:53,183 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) [2023-08-30 03:57:53,188 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 [2023-08-30 03:57:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:57:53,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 03:57:53,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:57:53,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:57:53,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:57:53,331 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 03:57:53,332 INFO L350 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 1 case distinctions, treesize of input 17 treesize of output 31 [2023-08-30 03:57:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:57:53,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:57:53,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:57:53,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089591656] [2023-08-30 03:57:53,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089591656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:57:53,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:57:53,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:57:53,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515844279] [2023-08-30 03:57:53,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:57:53,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:57:53,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:57:53,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:57:53,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:57:53,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-08-30 03:57:53,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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) [2023-08-30 03:57:53,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:57:53,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-08-30 03:57:53,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:57:54,710 INFO L130 PetriNetUnfolder]: 1488/2314 cut-off events. [2023-08-30 03:57:54,711 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:57:54,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 2314 events. 1488/2314 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11902 event pairs, 249 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 4642. Up to 1822 conditions per place. [2023-08-30 03:57:54,721 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 77 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-30 03:57:54,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 79 transitions, 334 flow [2023-08-30 03:57:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:57:54,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:57:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2023-08-30 03:57:54,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46940244780417567 [2023-08-30 03:57:54,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2023-08-30 03:57:54,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2023-08-30 03:57:54,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:57:54,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2023-08-30 03:57:54,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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) [2023-08-30 03:57:54,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 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) [2023-08-30 03:57:54,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 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) [2023-08-30 03:57:54,730 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 124 flow. Second operand 3 states and 652 transitions. [2023-08-30 03:57:54,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 79 transitions, 334 flow [2023-08-30 03:57:54,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 79 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:57:54,732 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 128 flow [2023-08-30 03:57:54,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-08-30 03:57:54,733 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2023-08-30 03:57:54,733 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 128 flow [2023-08-30 03:57:54,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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) [2023-08-30 03:57:54,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:57:54,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 03:57:54,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-30 03:57:54,942 WARN L477 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 [2023-08-30 03:57:54,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:57:54,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:57:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash 23030, now seen corresponding path program 1 times [2023-08-30 03:57:54,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:57:54,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481345967] [2023-08-30 03:57:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:57:54,944 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 [2023-08-30 03:57:54,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:57:54,945 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) [2023-08-30 03:57:54,948 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 [2023-08-30 03:57:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:57:55,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 03:57:55,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:57:55,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:57:55,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:57:55,060 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:57:55,060 INFO L350 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 1 case distinctions, treesize of input 15 treesize of output 23 [2023-08-30 03:57:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:57:55,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:57:55,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:57:55,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481345967] [2023-08-30 03:57:55,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481345967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:57:55,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:57:55,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:57:55,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339928955] [2023-08-30 03:57:55,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:57:55,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:57:55,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:57:55,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:57:55,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:57:55,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 463 [2023-08-30 03:57:55,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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) [2023-08-30 03:57:55,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:57:55,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 463 [2023-08-30 03:57:55,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:57:56,841 INFO L130 PetriNetUnfolder]: 1491/2316 cut-off events. [2023-08-30 03:57:56,841 INFO L131 PetriNetUnfolder]: For 231/231 co-relation queries the response was YES. [2023-08-30 03:57:56,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5095 conditions, 2316 events. 1491/2316 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10877 event pairs, 1257 based on Foata normal form. 0/1170 useless extension candidates. Maximal degree in co-relation 5038. Up to 2315 conditions per place. [2023-08-30 03:57:56,853 INFO L137 encePairwiseOnDemand]: 455/463 looper letters, 51 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2023-08-30 03:57:56,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 252 flow [2023-08-30 03:57:56,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:57:56,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:57:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-08-30 03:57:56,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478041756659467 [2023-08-30 03:57:56,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-08-30 03:57:56,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-08-30 03:57:56,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:57:56,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-08-30 03:57:56,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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) [2023-08-30 03:57:56,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 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) [2023-08-30 03:57:56,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 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) [2023-08-30 03:57:56,865 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 128 flow. Second operand 3 states and 622 transitions. [2023-08-30 03:57:56,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 252 flow [2023-08-30 03:57:56,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:57:56,870 INFO L231 Difference]: Finished difference. Result has 55 places, 55 transitions, 163 flow [2023-08-30 03:57:56,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2023-08-30 03:57:56,871 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2023-08-30 03:57:56,871 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 163 flow [2023-08-30 03:57:56,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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) [2023-08-30 03:57:56,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:57:56,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:57:56,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-30 03:57:57,081 WARN L477 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 [2023-08-30 03:57:57,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:57:57,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:57:57,083 INFO L85 PathProgramCache]: Analyzing trace with hash 715196, now seen corresponding path program 1 times [2023-08-30 03:57:57,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:57:57,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359690425] [2023-08-30 03:57:57,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:57:57,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:57:57,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:57:57,085 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) [2023-08-30 03:57:57,085 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 [2023-08-30 03:57:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:57:57,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 03:57:57,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:57:57,278 INFO L350 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 20 treesize of output 21 [2023-08-30 03:57:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:57:57,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:57:57,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:57:57,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359690425] [2023-08-30 03:57:57,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359690425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:57:57,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:57:57,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:57:57,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662414921] [2023-08-30 03:57:57,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:57:57,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:57:57,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:57:57,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:57:57,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:57:57,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 463 [2023-08-30 03:57:57,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 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) [2023-08-30 03:57:57,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:57:57,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 463 [2023-08-30 03:57:57,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:58:00,263 INFO L130 PetriNetUnfolder]: 1490/2319 cut-off events. [2023-08-30 03:58:00,263 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-08-30 03:58:00,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4954 conditions, 2319 events. 1490/2319 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10871 event pairs, 1257 based on Foata normal form. 0/1173 useless extension candidates. Maximal degree in co-relation 4913. Up to 2313 conditions per place. [2023-08-30 03:58:00,274 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 51 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-08-30 03:58:00,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 290 flow [2023-08-30 03:58:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:58:00,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:58:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 759 transitions. [2023-08-30 03:58:00,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40982721382289417 [2023-08-30 03:58:00,278 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 759 transitions. [2023-08-30 03:58:00,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 759 transitions. [2023-08-30 03:58:00,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:58:00,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 759 transitions. [2023-08-30 03:58:00,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 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) [2023-08-30 03:58:00,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 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) [2023-08-30 03:58:00,284 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 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) [2023-08-30 03:58:00,284 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 163 flow. Second operand 4 states and 759 transitions. [2023-08-30 03:58:00,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 290 flow [2023-08-30 03:58:00,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:58:00,287 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 188 flow [2023-08-30 03:58:00,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-08-30 03:58:00,289 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-08-30 03:58:00,289 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 188 flow [2023-08-30 03:58:00,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 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) [2023-08-30 03:58:00,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:58:00,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:58:00,309 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 [2023-08-30 03:58:00,509 WARN L477 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 [2023-08-30 03:58:00,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:58:00,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:58:00,510 INFO L85 PathProgramCache]: Analyzing trace with hash 715195, now seen corresponding path program 1 times [2023-08-30 03:58:00,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:58:00,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310361158] [2023-08-30 03:58:00,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:58:00,511 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 [2023-08-30 03:58:00,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:58:00,512 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) [2023-08-30 03:58:00,514 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 [2023-08-30 03:58:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:58:00,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 03:58:00,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:58:00,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-08-30 03:58:00,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-08-30 03:58:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:58:00,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:58:00,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:58:00,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310361158] [2023-08-30 03:58:00,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310361158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:58:00,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:58:00,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:58:00,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976078872] [2023-08-30 03:58:00,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:58:00,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:58:00,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:58:00,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:58:00,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:58:01,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-30 03:58:01,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 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) [2023-08-30 03:58:01,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:58:01,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-30 03:58:01,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:58:03,873 INFO L130 PetriNetUnfolder]: 1490/2318 cut-off events. [2023-08-30 03:58:03,873 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-08-30 03:58:03,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4966 conditions, 2318 events. 1490/2318 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10888 event pairs, 1257 based on Foata normal form. 1/1178 useless extension candidates. Maximal degree in co-relation 4886. Up to 2312 conditions per place. [2023-08-30 03:58:03,884 INFO L137 encePairwiseOnDemand]: 458/463 looper letters, 55 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-30 03:58:03,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 329 flow [2023-08-30 03:58:03,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:58:03,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:58:03,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 759 transitions. [2023-08-30 03:58:03,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40982721382289417 [2023-08-30 03:58:03,887 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 759 transitions. [2023-08-30 03:58:03,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 759 transitions. [2023-08-30 03:58:03,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:58:03,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 759 transitions. [2023-08-30 03:58:03,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 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) [2023-08-30 03:58:03,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 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) [2023-08-30 03:58:03,894 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 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) [2023-08-30 03:58:03,894 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 188 flow. Second operand 4 states and 759 transitions. [2023-08-30 03:58:03,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 329 flow [2023-08-30 03:58:03,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:58:03,898 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 196 flow [2023-08-30 03:58:03,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-30 03:58:03,900 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2023-08-30 03:58:03,901 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 196 flow [2023-08-30 03:58:03,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 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) [2023-08-30 03:58:03,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:58:03,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:58:03,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-30 03:58:04,113 WARN L477 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 [2023-08-30 03:58:04,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:58:04,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:58:04,116 INFO L85 PathProgramCache]: Analyzing trace with hash 22168903, now seen corresponding path program 1 times [2023-08-30 03:58:04,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:58:04,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840281449] [2023-08-30 03:58:04,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:58:04,119 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 [2023-08-30 03:58:04,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:58:04,120 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) [2023-08-30 03:58:04,124 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 [2023-08-30 03:58:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:58:04,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 03:58:04,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:58:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:58:04,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:58:04,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:58:04,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840281449] [2023-08-30 03:58:04,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840281449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:58:04,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:58:04,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:58:04,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521614416] [2023-08-30 03:58:04,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:58:04,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:58:04,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:58:04,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:58:04,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:58:04,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-08-30 03:58:04,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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) [2023-08-30 03:58:04,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:58:04,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-08-30 03:58:04,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:58:06,010 INFO L130 PetriNetUnfolder]: 1488/2316 cut-off events. [2023-08-30 03:58:06,010 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-08-30 03:58:06,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4960 conditions, 2316 events. 1488/2316 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10867 event pairs, 1257 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 4917. Up to 2313 conditions per place. [2023-08-30 03:58:06,026 INFO L137 encePairwiseOnDemand]: 460/463 looper letters, 52 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-08-30 03:58:06,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 300 flow [2023-08-30 03:58:06,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:58:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:58:06,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-30 03:58:06,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44924406047516197 [2023-08-30 03:58:06,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-30 03:58:06,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-30 03:58:06,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:58:06,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-30 03:58:06,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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) [2023-08-30 03:58:06,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 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) [2023-08-30 03:58:06,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 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) [2023-08-30 03:58:06,036 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 196 flow. Second operand 3 states and 624 transitions. [2023-08-30 03:58:06,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 300 flow [2023-08-30 03:58:06,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 56 transitions, 292 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 03:58:06,040 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 180 flow [2023-08-30 03:58:06,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-30 03:58:06,043 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-08-30 03:58:06,043 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 180 flow [2023-08-30 03:58:06,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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) [2023-08-30 03:58:06,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:58:06,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:58:06,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-30 03:58:06,253 WARN L477 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 [2023-08-30 03:58:06,253 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:58:06,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:58:06,254 INFO L85 PathProgramCache]: Analyzing trace with hash 22171597, now seen corresponding path program 1 times [2023-08-30 03:58:06,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:58:06,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114612724] [2023-08-30 03:58:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:58:06,255 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 [2023-08-30 03:58:06,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:58:06,256 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) [2023-08-30 03:58:06,262 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 [2023-08-30 03:58:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:58:06,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-30 03:58:06,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:58:09,409 INFO L321 Elim1Store]: treesize reduction 324, result has 30.9 percent of original size [2023-08-30 03:58:09,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 442 treesize of output 633 [2023-08-30 03:58:15,557 WARN L222 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 117 DAG size of output: 54 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-30 03:58:15,557 INFO L321 Elim1Store]: treesize reduction 324, result has 30.9 percent of original size [2023-08-30 03:58:15,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 442 treesize of output 633 [2023-08-30 03:58:16,015 INFO L350 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 [2023-08-30 03:58:16,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-08-30 03:58:16,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-08-30 03:58:16,750 INFO L350 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 12 treesize of output 11 [2023-08-30 03:58:17,033 INFO L350 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 12 treesize of output 11 [2023-08-30 03:58:17,309 INFO L350 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 10 treesize of output 9 [2023-08-30 03:58:17,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-08-30 03:58:17,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-08-30 03:58:17,913 INFO L350 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 12 treesize of output 11 [2023-08-30 03:58:18,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-08-30 03:58:26,012 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:58:26,026 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:58:26,094 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:58:26,105 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:58:26,171 INFO L217 Elim1Store]: Index analysis took 203 ms [2023-08-30 03:58:26,386 INFO L321 Elim1Store]: treesize reduction 242, result has 8.0 percent of original size [2023-08-30 03:58:26,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 244 treesize of output 420 [2023-08-30 03:58:26,931 INFO L350 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 9 treesize of output 7 [2023-08-30 03:58:27,009 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:58:27,025 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:58:27,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 259 [2023-08-30 03:58:27,054 INFO L350 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 9 treesize of output 7 [2023-08-30 03:58:27,409 INFO L217 Elim1Store]: Index analysis took 147 ms [2023-08-30 03:58:27,515 INFO L321 Elim1Store]: treesize reduction 125, result has 12.0 percent of original size [2023-08-30 03:58:27,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 15 case distinctions, treesize of input 159 treesize of output 259 [2023-08-30 03:58:28,010 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:58:28,039 INFO L217 Elim1Store]: Index analysis took 111 ms [2023-08-30 03:58:28,134 INFO L321 Elim1Store]: treesize reduction 216, result has 7.3 percent of original size [2023-08-30 03:58:28,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 318 treesize of output 317 [2023-08-30 03:58:28,645 INFO L350 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 9 treesize of output 7 [2023-08-30 03:58:29,018 INFO L321 Elim1Store]: treesize reduction 47, result has 26.6 percent of original size [2023-08-30 03:58:29,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 case distinctions, treesize of input 79 treesize of output 56 [2023-08-30 03:58:29,240 INFO L321 Elim1Store]: treesize reduction 110, result has 6.8 percent of original size [2023-08-30 03:58:29,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 100 treesize of output 37 [2023-08-30 03:58:29,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:58:29,363 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-30 03:58:29,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 24 [2023-08-30 03:58:29,376 INFO L350 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 9 treesize of output 7 [2023-08-30 03:58:29,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 220 [2023-08-30 03:58:29,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:58:29,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:58:30,144 INFO L321 Elim1Store]: treesize reduction 343, result has 12.9 percent of original size [2023-08-30 03:58:30,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 683 treesize of output 882 [2023-08-30 03:58:30,215 INFO L350 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 276 treesize of output 274 [2023-08-30 03:58:30,245 INFO L350 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 274 treesize of output 272 [2023-08-30 03:58:31,013 INFO L321 Elim1Store]: treesize reduction 67, result has 23.9 percent of original size [2023-08-30 03:58:31,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 case distinctions, treesize of input 986 treesize of output 913 [2023-08-30 03:58:31,080 INFO L350 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 337 treesize of output 335 [2023-08-30 03:58:31,100 INFO L350 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 335 treesize of output 333 [2023-08-30 03:58:31,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:58:31,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:58:31,885 INFO L321 Elim1Store]: treesize reduction 264, result has 16.2 percent of original size [2023-08-30 03:58:31,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 411947 treesize of output 412005 [2023-08-30 03:58:32,257 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-08-30 03:58:32,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 145 treesize of output 16 [2023-08-30 03:58:32,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 115 [2023-08-30 03:58:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:58:33,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:58:33,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:58:33,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114612724] [2023-08-30 03:58:33,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114612724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:58:33,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:58:33,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:58:33,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030559126] [2023-08-30 03:58:33,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:58:33,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:58:33,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:58:33,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:58:33,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:58:34,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 463 [2023-08-30 03:58:34,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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) [2023-08-30 03:58:34,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:58:34,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 463 [2023-08-30 03:58:34,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:58:36,620 INFO L130 PetriNetUnfolder]: 1488/2314 cut-off events. [2023-08-30 03:58:36,620 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-30 03:58:36,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 2314 events. 1488/2314 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10852 event pairs, 1257 based on Foata normal form. 0/1175 useless extension candidates. Maximal degree in co-relation 4897. Up to 2310 conditions per place. [2023-08-30 03:58:36,628 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 52 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-08-30 03:58:36,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 302 flow [2023-08-30 03:58:36,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:58:36,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:58:36,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 725 transitions. [2023-08-30 03:58:36,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39146868250539957 [2023-08-30 03:58:36,631 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 725 transitions. [2023-08-30 03:58:36,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 725 transitions. [2023-08-30 03:58:36,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:58:36,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 725 transitions. [2023-08-30 03:58:36,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 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) [2023-08-30 03:58:36,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 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) [2023-08-30 03:58:36,637 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 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) [2023-08-30 03:58:36,637 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 180 flow. Second operand 4 states and 725 transitions. [2023-08-30 03:58:36,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 302 flow [2023-08-30 03:58:36,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:58:36,638 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 192 flow [2023-08-30 03:58:36,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-08-30 03:58:36,639 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2023-08-30 03:58:36,639 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 192 flow [2023-08-30 03:58:36,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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) [2023-08-30 03:58:36,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:58:36,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:58:36,653 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 (8)] Forceful destruction successful, exit code 0 [2023-08-30 03:58:36,848 WARN L477 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 [2023-08-30 03:58:36,849 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:58:36,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:58:36,849 INFO L85 PathProgramCache]: Analyzing trace with hash 22171596, now seen corresponding path program 1 times [2023-08-30 03:58:36,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:58:36,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358545281] [2023-08-30 03:58:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:58:36,851 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 [2023-08-30 03:58:36,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:58:36,852 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) [2023-08-30 03:58:36,854 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 [2023-08-30 03:58:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:58:37,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 03:58:37,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:58:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:58:37,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:58:37,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:58:37,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358545281] [2023-08-30 03:58:37,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358545281] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:58:37,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:58:37,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:58:37,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816499639] [2023-08-30 03:58:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:58:37,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:58:37,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:58:37,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:58:37,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:58:37,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 463 [2023-08-30 03:58:37,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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) [2023-08-30 03:58:37,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:58:37,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 463 [2023-08-30 03:58:37,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:58:39,887 INFO L130 PetriNetUnfolder]: 1488/2313 cut-off events. [2023-08-30 03:58:39,888 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-30 03:58:39,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4955 conditions, 2313 events. 1488/2313 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10820 event pairs, 1257 based on Foata normal form. 1/1176 useless extension candidates. Maximal degree in co-relation 4921. Up to 2310 conditions per place. [2023-08-30 03:58:39,900 INFO L137 encePairwiseOnDemand]: 460/463 looper letters, 53 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-30 03:58:39,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 301 flow [2023-08-30 03:58:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:58:39,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:58:39,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2023-08-30 03:58:39,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43628509719222464 [2023-08-30 03:58:39,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2023-08-30 03:58:39,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2023-08-30 03:58:39,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:58:39,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2023-08-30 03:58:39,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 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) [2023-08-30 03:58:39,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 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) [2023-08-30 03:58:39,909 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 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) [2023-08-30 03:58:39,909 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 192 flow. Second operand 3 states and 606 transitions. [2023-08-30 03:58:39,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 301 flow [2023-08-30 03:58:39,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:58:39,914 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 185 flow [2023-08-30 03:58:39,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-08-30 03:58:39,916 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2023-08-30 03:58:39,916 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 185 flow [2023-08-30 03:58:39,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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) [2023-08-30 03:58:39,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:58:39,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 03:58:39,929 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 [2023-08-30 03:58:40,122 WARN L477 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 [2023-08-30 03:58:40,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:58:40,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:58:40,123 INFO L85 PathProgramCache]: Analyzing trace with hash 687317365, now seen corresponding path program 1 times [2023-08-30 03:58:40,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:58:40,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926468896] [2023-08-30 03:58:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:58:40,124 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 [2023-08-30 03:58:40,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:58:40,125 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) [2023-08-30 03:58:40,127 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 [2023-08-30 03:58:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:58:40,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:58:40,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:58:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:58:40,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 03:58:40,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:58:40,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:58:40,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926468896] [2023-08-30 03:58:40,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926468896] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 03:58:40,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 03:58:40,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 03:58:40,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665029150] [2023-08-30 03:58:40,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 03:58:40,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:58:40,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:58:40,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:58:40,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:58:40,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 463 [2023-08-30 03:58:40,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 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) [2023-08-30 03:58:40,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:58:40,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 463 [2023-08-30 03:58:40,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:58:45,519 INFO L130 PetriNetUnfolder]: 1491/2328 cut-off events. [2023-08-30 03:58:45,519 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-08-30 03:58:45,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5018 conditions, 2328 events. 1491/2328 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10912 event pairs, 1257 based on Foata normal form. 6/1193 useless extension candidates. Maximal degree in co-relation 4972. Up to 2307 conditions per place. [2023-08-30 03:58:45,552 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 58 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2023-08-30 03:58:45,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 68 transitions, 411 flow [2023-08-30 03:58:45,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:58:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:58:45,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1202 transitions. [2023-08-30 03:58:45,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326853851691865 [2023-08-30 03:58:45,558 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1202 transitions. [2023-08-30 03:58:45,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1202 transitions. [2023-08-30 03:58:45,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:58:45,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1202 transitions. [2023-08-30 03:58:45,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 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) [2023-08-30 03:58:45,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 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) [2023-08-30 03:58:45,564 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 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) [2023-08-30 03:58:45,565 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 185 flow. Second operand 6 states and 1202 transitions. [2023-08-30 03:58:45,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 68 transitions, 411 flow [2023-08-30 03:58:45,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 407 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:58:45,567 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 275 flow [2023-08-30 03:58:45,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2023-08-30 03:58:45,568 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-08-30 03:58:45,568 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 275 flow [2023-08-30 03:58:45,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 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) [2023-08-30 03:58:45,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:58:45,569 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 03:58:45,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-30 03:58:45,780 WARN L477 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 [2023-08-30 03:58:45,781 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:58:45,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:58:45,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1843323079, now seen corresponding path program 2 times [2023-08-30 03:58:45,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:58:45,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896098231] [2023-08-30 03:58:45,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:58:45,782 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 [2023-08-30 03:58:45,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:58:45,783 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) [2023-08-30 03:58:45,786 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 [2023-08-30 03:58:46,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 03:58:46,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:58:46,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 03:58:46,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:58:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:58:46,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 03:58:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:58:46,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:58:46,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896098231] [2023-08-30 03:58:46,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896098231] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 03:58:46,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 03:58:46,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 03:58:46,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367441078] [2023-08-30 03:58:46,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 03:58:46,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 03:58:46,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:58:46,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 03:58:46,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-30 03:58:46,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 463 [2023-08-30 03:58:46,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 275 flow. Second operand has 12 states, 12 states have (on average 190.16666666666666) internal successors, (2282), 12 states have internal predecessors, (2282), 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) [2023-08-30 03:58:46,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:58:46,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 463 [2023-08-30 03:58:46,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:58:51,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:58:53,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:58:56,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:58:58,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:01,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:08,698 INFO L130 PetriNetUnfolder]: 1491/2358 cut-off events. [2023-08-30 03:59:08,698 INFO L131 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2023-08-30 03:59:08,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5236 conditions, 2358 events. 1491/2358 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11232 event pairs, 1257 based on Foata normal form. 12/1223 useless extension candidates. Maximal degree in co-relation 4955. Up to 2307 conditions per place. [2023-08-30 03:59:08,724 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 76 selfloop transitions, 16 changer transitions 0/92 dead transitions. [2023-08-30 03:59:08,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 92 transitions, 767 flow [2023-08-30 03:59:08,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 03:59:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 03:59:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2363 transitions. [2023-08-30 03:59:08,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42530597552195826 [2023-08-30 03:59:08,736 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2363 transitions. [2023-08-30 03:59:08,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2363 transitions. [2023-08-30 03:59:08,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:59:08,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2363 transitions. [2023-08-30 03:59:08,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 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) [2023-08-30 03:59:08,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 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) [2023-08-30 03:59:08,750 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 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) [2023-08-30 03:59:08,750 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 275 flow. Second operand 12 states and 2363 transitions. [2023-08-30 03:59:08,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 92 transitions, 767 flow [2023-08-30 03:59:08,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 92 transitions, 763 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:59:08,754 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 436 flow [2023-08-30 03:59:08,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=436, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2023-08-30 03:59:08,754 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 17 predicate places. [2023-08-30 03:59:08,755 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 436 flow [2023-08-30 03:59:08,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 190.16666666666666) internal successors, (2282), 12 states have internal predecessors, (2282), 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) [2023-08-30 03:59:08,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:59:08,756 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-08-30 03:59:08,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-30 03:59:08,976 WARN L477 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 [2023-08-30 03:59:08,976 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:59:08,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:59:08,976 INFO L85 PathProgramCache]: Analyzing trace with hash 509313543, now seen corresponding path program 3 times [2023-08-30 03:59:08,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:59:08,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062909195] [2023-08-30 03:59:08,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 03:59:08,977 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 [2023-08-30 03:59:08,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:59:08,979 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) [2023-08-30 03:59:08,984 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 [2023-08-30 03:59:15,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-30 03:59:15,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:59:15,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 03:59:15,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:59:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:59:15,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 03:59:15,556 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:59:15,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:59:15,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062909195] [2023-08-30 03:59:15,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062909195] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 03:59:15,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 03:59:15,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-30 03:59:15,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974559876] [2023-08-30 03:59:15,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 03:59:15,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 03:59:15,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:59:15,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 03:59:15,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-08-30 03:59:16,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 463 [2023-08-30 03:59:16,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 436 flow. Second operand has 24 states, 24 states have (on average 190.08333333333334) internal successors, (4562), 24 states have internal predecessors, (4562), 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) [2023-08-30 03:59:16,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:59:16,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 463 [2023-08-30 03:59:16,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:59:18,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:19,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:21,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:25,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:30,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:35,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:43,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:45,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:47,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:50,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:51,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:53,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:54,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:55,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:58,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:03,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:04,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:06,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:07,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:09,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:11,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:13,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:16,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:17,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:20,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:22,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:24,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:25,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:30,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:34,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:36,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:42,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:44,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:17,409 INFO L130 PetriNetUnfolder]: 1491/2418 cut-off events. [2023-08-30 04:01:17,410 INFO L131 PetriNetUnfolder]: For 1455/1455 co-relation queries the response was YES. [2023-08-30 04:01:17,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5759 conditions, 2418 events. 1491/2418 cut-off events. For 1455/1455 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11651 event pairs, 1257 based on Foata normal form. 24/1283 useless extension candidates. Maximal degree in co-relation 5114. Up to 2307 conditions per place. [2023-08-30 04:01:17,419 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 112 selfloop transitions, 28 changer transitions 0/140 dead transitions. [2023-08-30 04:01:17,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 140 transitions, 1622 flow [2023-08-30 04:01:17,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 04:01:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 04:01:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4685 transitions. [2023-08-30 04:01:17,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216162706983441 [2023-08-30 04:01:17,437 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4685 transitions. [2023-08-30 04:01:17,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4685 transitions. [2023-08-30 04:01:17,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:01:17,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4685 transitions. [2023-08-30 04:01:17,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 195.20833333333334) internal successors, (4685), 24 states have internal predecessors, (4685), 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) [2023-08-30 04:01:17,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 463.0) internal successors, (11575), 25 states have internal predecessors, (11575), 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) [2023-08-30 04:01:17,476 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 463.0) internal successors, (11575), 25 states have internal predecessors, (11575), 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) [2023-08-30 04:01:17,476 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 436 flow. Second operand 24 states and 4685 transitions. [2023-08-30 04:01:17,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 140 transitions, 1622 flow [2023-08-30 04:01:17,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 140 transitions, 1528 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-30 04:01:17,485 INFO L231 Difference]: Finished difference. Result has 117 places, 84 transitions, 699 flow [2023-08-30 04:01:17,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=699, PETRI_PLACES=117, PETRI_TRANSITIONS=84} [2023-08-30 04:01:17,486 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 49 predicate places. [2023-08-30 04:01:17,486 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 84 transitions, 699 flow [2023-08-30 04:01:17,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 190.08333333333334) internal successors, (4562), 24 states have internal predecessors, (4562), 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) [2023-08-30 04:01:17,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:01:17,487 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1] [2023-08-30 04:01:17,539 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 [2023-08-30 04:01:17,701 WARN L477 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 [2023-08-30 04:01:17,701 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 04:01:17,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:01:17,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1694430343, now seen corresponding path program 4 times [2023-08-30 04:01:17,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:01:17,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893603132] [2023-08-30 04:01:17,702 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 04:01:17,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:01:17,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:01:17,703 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) [2023-08-30 04:01:17,704 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 [2023-08-30 04:01:28,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 04:01:28,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:01:28,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 3643 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 04:01:28,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:01:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:01:28,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:01:29,971 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:01:29,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:01:29,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893603132] [2023-08-30 04:01:29,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893603132] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:01:29,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:01:29,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-08-30 04:01:29,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321740341] [2023-08-30 04:01:29,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:01:29,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-30 04:01:29,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:01:29,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-30 04:01:29,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=1754, Unknown=0, NotChecked=0, Total=2256 [2023-08-30 04:01:31,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 463 [2023-08-30 04:01:31,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 84 transitions, 699 flow. Second operand has 48 states, 48 states have (on average 190.04166666666666) internal successors, (9122), 48 states have internal predecessors, (9122), 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) [2023-08-30 04:01:31,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:01:31,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 463 [2023-08-30 04:01:31,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:01:40,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:42,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:43,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:45,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:47,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:49,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:57,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:06,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:08,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:09,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:14,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:20,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:21,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:23,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:26,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:28,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:30,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:36,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:38,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15