./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/weaver/popl20-prod-cons-eq.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 03:42:51,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 03:42:51,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 03:42:51,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 03:42:51,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 03:42:51,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 03:42:51,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 03:42:51,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 03:42:51,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 03:42:51,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 03:42:51,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 03:42:51,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 03:42:51,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 03:42:51,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 03:42:51,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 03:42:51,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 03:42:51,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 03:42:51,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 03:42:51,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 03:42:51,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 03:42:51,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 03:42:51,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 03:42:51,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 03:42:51,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 03:42:51,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 03:42:51,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 03:42:51,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 03:42:51,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 03:42:51,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 03:42:51,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 03:42:51,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 03:42:51,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 03:42:51,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 03:42:51,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 03:42:51,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 03:42:51,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 03:42:51,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 03:42:51,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 03:42:51,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 03:42:51,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 03:42:51,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 03:42:51,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 03:42:51,774 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 03:42:51,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 03:42:51,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 03:42:51,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 03:42:51,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 03:42:51,775 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 03:42:51,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 03:42:51,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 03:42:51,776 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 03:42:51,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 03:42:51,776 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 03:42:51,776 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 03:42:51,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 03:42:51,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 03:42:51,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 03:42:51,777 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 03:42:51,777 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 03:42:51,777 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 03:42:51,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 03:42:51,777 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 03:42:51,777 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 03:42:51,777 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 03:42:51,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 03:42:51,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 03:42:51,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 03:42:51,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 03:42:51,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 03:42:51,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 03:42:51,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 03:42:51,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 03:42:51,779 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 03:42:51,779 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 03:42:51,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 03:42:51,779 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 03:42:51,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 03:42:52,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 03:42:52,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 03:42:52,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 03:42:52,083 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 03:42:52,083 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 03:42:52,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-09-01 03:42:53,182 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 03:42:53,423 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 03:42:53,423 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-09-01 03:42:53,429 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e07d49c2c/848ac154048f445aa94b804e912188cd/FLAG89e392a0b [2023-09-01 03:42:53,444 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e07d49c2c/848ac154048f445aa94b804e912188cd [2023-09-01 03:42:53,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 03:42:53,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 03:42:53,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 03:42:53,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 03:42:53,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 03:42:53,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 03:42:53" (1/1) ... [2023-09-01 03:42:53,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e63ccd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:53, skipping insertion in model container [2023-09-01 03:42:53,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 03:42:53" (1/1) ... [2023-09-01 03:42:53,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 03:42:53,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 03:42:53,630 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-09-01 03:42:53,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 03:42:53,653 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) [2023-09-01 03:42:53,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ad1a396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:53, skipping insertion in model container [2023-09-01 03:42:53,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 03:42:53,655 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-09-01 03:42:53,656 INFO L158 Benchmark]: Toolchain (without parser) took 208.40ms. Allocated memory is still 69.2MB. Free memory was 46.1MB in the beginning and 35.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 03:42:53,657 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory was 32.0MB in the beginning and 32.0MB in the end (delta: 50.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 03:42:53,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.59ms. Allocated memory is still 69.2MB. Free memory was 45.9MB in the beginning and 35.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 03:42:53,659 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 54.5MB. Free memory was 32.0MB in the beginning and 32.0MB in the end (delta: 50.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.59ms. Allocated memory is still 69.2MB. Free memory was 45.9MB in the beginning and 35.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 125]: 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/weaver/popl20-prod-cons-eq.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 03:42:55,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 03:42:55,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 03:42:55,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 03:42:55,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 03:42:55,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 03:42:55,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 03:42:55,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 03:42:55,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 03:42:55,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 03:42:55,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 03:42:55,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 03:42:55,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 03:42:55,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 03:42:55,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 03:42:55,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 03:42:55,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 03:42:55,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 03:42:55,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 03:42:55,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 03:42:55,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 03:42:55,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 03:42:55,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 03:42:55,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 03:42:55,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 03:42:55,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 03:42:55,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 03:42:55,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 03:42:55,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 03:42:55,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 03:42:55,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 03:42:55,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 03:42:55,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 03:42:55,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 03:42:55,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 03:42:55,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 03:42:55,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 03:42:55,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 03:42:55,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 03:42:55,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 03:42:55,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 03:42:55,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-09-01 03:42:55,461 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 03:42:55,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 03:42:55,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 03:42:55,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 03:42:55,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 03:42:55,463 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 03:42:55,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 03:42:55,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 03:42:55,464 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 03:42:55,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 03:42:55,465 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 03:42:55,465 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 03:42:55,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 03:42:55,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 03:42:55,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 03:42:55,466 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 03:42:55,466 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 03:42:55,466 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 03:42:55,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 03:42:55,467 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 03:42:55,467 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 03:42:55,467 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 03:42:55,467 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 03:42:55,467 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 03:42:55,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 03:42:55,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 03:42:55,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 03:42:55,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 03:42:55,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 03:42:55,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 03:42:55,469 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 03:42:55,469 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 03:42:55,469 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 03:42:55,469 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 03:42:55,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 03:42:55,470 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 03:42:55,470 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 03:42:55,470 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 03:42:55,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 03:42:55,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 03:42:55,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 03:42:55,790 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 03:42:55,790 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 03:42:55,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-09-01 03:42:57,083 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 03:42:57,271 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 03:42:57,271 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-09-01 03:42:57,277 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f82a8521/35d8136a3295434aa8be4f86f91a2fcd/FLAGe757ef705 [2023-09-01 03:42:57,290 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f82a8521/35d8136a3295434aa8be4f86f91a2fcd [2023-09-01 03:42:57,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 03:42:57,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 03:42:57,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 03:42:57,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 03:42:57,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 03:42:57,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 03:42:57" (1/1) ... [2023-09-01 03:42:57,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa55d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:57, skipping insertion in model container [2023-09-01 03:42:57,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 03:42:57" (1/1) ... [2023-09-01 03:42:57,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 03:42:57,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 03:42:57,484 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-09-01 03:42:57,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 03:42:57,506 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-09-01 03:42:57,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 03:42:57,529 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-09-01 03:42:57,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 03:42:57,539 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 03:42:57,564 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-09-01 03:42:57,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 03:42:57,580 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 03:42:57,580 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 03:42:57,590 INFO L208 MainTranslator]: Completed translation [2023-09-01 03:42:57,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:57 WrapperNode [2023-09-01 03:42:57,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 03:42:57,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 03:42:57,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 03:42:57,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 03:42:57,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:57" (1/1) ... [2023-09-01 03:42:57,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:57" (1/1) ... [2023-09-01 03:42:57,681 INFO L138 Inliner]: procedures = 30, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 394 [2023-09-01 03:42:57,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 03:42:57,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 03:42:57,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 03:42:57,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 03:42:57,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:57" (1/1) ... [2023-09-01 03:42:57,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:57" (1/1) ... [2023-09-01 03:42:57,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:57" (1/1) ... [2023-09-01 03:42:57,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:57" (1/1) ... [2023-09-01 03:42:57,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:57" (1/1) ... [2023-09-01 03:42:57,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:57" (1/1) ... [2023-09-01 03:42:57,756 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:57" (1/1) ... [2023-09-01 03:42:57,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:57" (1/1) ... [2023-09-01 03:42:57,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 03:42:57,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 03:42:57,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 03:42:57,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 03:42:57,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:57" (1/1) ... [2023-09-01 03:42:57,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 03:42:57,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 03:42:57,806 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) [2023-09-01 03:42:57,833 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 [2023-09-01 03:42:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 03:42:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-09-01 03:42:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-09-01 03:42:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 03:42:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 03:42:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 03:42:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 03:42:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 03:42:57,861 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 03:42:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 03:42:57,862 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 03:42:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 03:42:57,862 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 03:42:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 03:42:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 03:42:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 03:42:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 03:42:57,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 03:42:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-09-01 03:42:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 03:42:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 03:42:57,866 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 03:42:58,052 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 03:42:58,054 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 03:42:58,960 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 03:42:59,180 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 03:42:59,180 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-09-01 03:42:59,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 03:42:59 BoogieIcfgContainer [2023-09-01 03:42:59,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 03:42:59,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 03:42:59,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 03:42:59,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 03:42:59,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 03:42:57" (1/3) ... [2023-09-01 03:42:59,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f2c1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 03:42:59, skipping insertion in model container [2023-09-01 03:42:59,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:42:57" (2/3) ... [2023-09-01 03:42:59,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f2c1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 03:42:59, skipping insertion in model container [2023-09-01 03:42:59,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 03:42:59" (3/3) ... [2023-09-01 03:42:59,195 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2023-09-01 03:42:59,212 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 03:42:59,213 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2023-09-01 03:42:59,213 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 03:42:59,371 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 03:42:59,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 408 places, 435 transitions, 894 flow [2023-09-01 03:42:59,600 INFO L130 PetriNetUnfolder]: 37/432 cut-off events. [2023-09-01 03:42:59,601 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 03:42:59,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 432 events. 37/432 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 723 event pairs, 0 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2023-09-01 03:42:59,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 408 places, 435 transitions, 894 flow [2023-09-01 03:42:59,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 401 places, 428 transitions, 874 flow [2023-09-01 03:42:59,625 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 03:42:59,645 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 401 places, 428 transitions, 874 flow [2023-09-01 03:42:59,649 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 401 places, 428 transitions, 874 flow [2023-09-01 03:42:59,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 401 places, 428 transitions, 874 flow [2023-09-01 03:42:59,722 INFO L130 PetriNetUnfolder]: 37/428 cut-off events. [2023-09-01 03:42:59,722 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 03:42:59,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 428 events. 37/428 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 714 event pairs, 0 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2023-09-01 03:42:59,732 INFO L119 LiptonReduction]: Number of co-enabled transitions 10370 [2023-09-01 03:44:10,498 INFO L134 LiptonReduction]: Checked pairs total: 15227 [2023-09-01 03:44:10,498 INFO L136 LiptonReduction]: Total number of compositions: 510 [2023-09-01 03:44:10,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 03:44:10,525 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;@c1d273d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 03:44:10,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 93 error locations. [2023-09-01 03:44:10,532 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 03:44:10,532 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 03:44:10,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:44:10,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 03:44:10,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-09-01 03:44:10,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:44:10,538 INFO L85 PathProgramCache]: Analyzing trace with hash 59753, now seen corresponding path program 1 times [2023-09-01 03:44:10,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:44:10,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672473324] [2023-09-01 03:44:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:44:10,548 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 [2023-09-01 03:44:10,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:44:10,551 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) [2023-09-01 03:44:10,552 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 [2023-09-01 03:44:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:44:10,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 03:44:10,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:44:10,812 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-09-01 03:44:10,813 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-09-01 03:44:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:44:10,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 03:44:10,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:44:10,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672473324] [2023-09-01 03:44:10,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672473324] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:44:10,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:44:10,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 03:44:10,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060288722] [2023-09-01 03:44:10,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:44:10,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 03:44:10,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:44:10,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 03:44:10,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 03:44:11,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 945 [2023-09-01 03:44:11,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 365.6666666666667) internal successors, (1097), 3 states have internal predecessors, (1097), 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) [2023-09-01 03:44:11,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:44:11,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 945 [2023-09-01 03:44:11,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:44:15,403 INFO L130 PetriNetUnfolder]: 15427/21602 cut-off events. [2023-09-01 03:44:15,404 INFO L131 PetriNetUnfolder]: For 124/124 co-relation queries the response was YES. [2023-09-01 03:44:15,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43548 conditions, 21602 events. 15427/21602 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 4086. Compared 155646 event pairs, 14465 based on Foata normal form. 0/4370 useless extension candidates. Maximal degree in co-relation 40680. Up to 21578 conditions per place. [2023-09-01 03:44:15,547 INFO L137 encePairwiseOnDemand]: 931/945 looper letters, 76 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-09-01 03:44:15,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 79 transitions, 330 flow [2023-09-01 03:44:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 03:44:15,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 03:44:15,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1185 transitions. [2023-09-01 03:44:15,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2023-09-01 03:44:15,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1185 transitions. [2023-09-01 03:44:15,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1185 transitions. [2023-09-01 03:44:15,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:44:15,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1185 transitions. [2023-09-01 03:44:15,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 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) [2023-09-01 03:44:15,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 945.0) internal successors, (3780), 4 states have internal predecessors, (3780), 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) [2023-09-01 03:44:15,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 945.0) internal successors, (3780), 4 states have internal predecessors, (3780), 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) [2023-09-01 03:44:15,600 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 202 flow. Second operand 3 states and 1185 transitions. [2023-09-01 03:44:15,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 79 transitions, 330 flow [2023-09-01 03:44:15,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 318 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 03:44:15,697 INFO L231 Difference]: Finished difference. Result has 76 places, 79 transitions, 166 flow [2023-09-01 03:44:15,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=945, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=76, PETRI_TRANSITIONS=79} [2023-09-01 03:44:15,704 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -17 predicate places. [2023-09-01 03:44:15,704 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 79 transitions, 166 flow [2023-09-01 03:44:15,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 365.6666666666667) internal successors, (1097), 3 states have internal predecessors, (1097), 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) [2023-09-01 03:44:15,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:44:15,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 03:44:15,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-09-01 03:44:15,919 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 [2023-09-01 03:44:15,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-09-01 03:44:15,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:44:15,920 INFO L85 PathProgramCache]: Analyzing trace with hash 59752, now seen corresponding path program 1 times [2023-09-01 03:44:15,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:44:15,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718070747] [2023-09-01 03:44:15,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:44:15,921 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 [2023-09-01 03:44:15,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:44:15,928 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) [2023-09-01 03:44:15,965 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 [2023-09-01 03:44:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:44:16,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 03:44:16,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:44:16,139 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-09-01 03:44:16,140 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 3 case distinctions, treesize of input 17 treesize of output 44 [2023-09-01 03:44:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:44:16,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 03:44:16,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:44:16,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718070747] [2023-09-01 03:44:16,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718070747] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:44:16,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:44:16,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 03:44:16,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198167116] [2023-09-01 03:44:16,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:44:16,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 03:44:16,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:44:16,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 03:44:16,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 03:44:16,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 945 [2023-09-01 03:44:16,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 79 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 363.6666666666667) internal successors, (1091), 3 states have internal predecessors, (1091), 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) [2023-09-01 03:44:16,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:44:16,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 945 [2023-09-01 03:44:16,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:44:23,277 INFO L130 PetriNetUnfolder]: 30852/43195 cut-off events. [2023-09-01 03:44:23,277 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 03:44:23,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86588 conditions, 43195 events. 30852/43195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7258. Compared 334462 event pairs, 28930 based on Foata normal form. 0/8738 useless extension candidates. Maximal degree in co-relation 86582. Up to 21580 conditions per place. [2023-09-01 03:44:23,486 INFO L137 encePairwiseOnDemand]: 932/945 looper letters, 136 selfloop transitions, 9 changer transitions 0/147 dead transitions. [2023-09-01 03:44:23,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 147 transitions, 598 flow [2023-09-01 03:44:23,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 03:44:23,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 03:44:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1238 transitions. [2023-09-01 03:44:23,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43668430335097 [2023-09-01 03:44:23,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1238 transitions. [2023-09-01 03:44:23,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1238 transitions. [2023-09-01 03:44:23,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:44:23,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1238 transitions. [2023-09-01 03:44:23,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 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) [2023-09-01 03:44:23,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 945.0) internal successors, (3780), 4 states have internal predecessors, (3780), 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) [2023-09-01 03:44:23,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 945.0) internal successors, (3780), 4 states have internal predecessors, (3780), 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) [2023-09-01 03:44:23,502 INFO L175 Difference]: Start difference. First operand has 76 places, 79 transitions, 166 flow. Second operand 3 states and 1238 transitions. [2023-09-01 03:44:23,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 147 transitions, 598 flow [2023-09-01 03:44:23,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 147 transitions, 597 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 03:44:23,508 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 241 flow [2023-09-01 03:44:23,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=945, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2023-09-01 03:44:23,511 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -14 predicate places. [2023-09-01 03:44:23,511 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 241 flow [2023-09-01 03:44:23,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 363.6666666666667) internal successors, (1091), 3 states have internal predecessors, (1091), 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) [2023-09-01 03:44:23,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:44:23,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 03:44:23,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-09-01 03:44:23,724 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 [2023-09-01 03:44:23,725 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-09-01 03:44:23,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:44:23,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1858186, now seen corresponding path program 1 times [2023-09-01 03:44:23,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:44:23,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618875143] [2023-09-01 03:44:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:44:23,727 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 [2023-09-01 03:44:23,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:44:23,728 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) [2023-09-01 03:44:23,731 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 [2023-09-01 03:44:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:44:23,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 03:44:23,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:44:23,932 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-09-01 03:44:23,932 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 3 case distinctions, treesize of input 17 treesize of output 44 [2023-09-01 03:44:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:44:24,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:44:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:44:24,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:44:24,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618875143] [2023-09-01 03:44:24,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618875143] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:44:24,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 03:44:24,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-09-01 03:44:24,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826620727] [2023-09-01 03:44:24,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 03:44:24,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 03:44:24,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:44:24,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 03:44:24,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 03:44:25,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 945 [2023-09-01 03:44:25,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 344.0) internal successors, (2064), 6 states have internal predecessors, (2064), 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) [2023-09-01 03:44:25,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:44:25,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 945 [2023-09-01 03:44:25,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:44:39,657 INFO L130 PetriNetUnfolder]: 61710/86391 cut-off events. [2023-09-01 03:44:39,657 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 03:44:39,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173236 conditions, 86391 events. 61710/86391 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10913. Compared 698194 event pairs, 57860 based on Foata normal form. 0/17497 useless extension candidates. Maximal degree in co-relation 173227. Up to 21579 conditions per place. [2023-09-01 03:44:40,099 INFO L137 encePairwiseOnDemand]: 928/945 looper letters, 252 selfloop transitions, 39 changer transitions 0/293 dead transitions. [2023-09-01 03:44:40,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 293 transitions, 1315 flow [2023-09-01 03:44:40,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 03:44:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 03:44:40,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2361 transitions. [2023-09-01 03:44:40,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4164021164021164 [2023-09-01 03:44:40,107 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2361 transitions. [2023-09-01 03:44:40,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2361 transitions. [2023-09-01 03:44:40,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:44:40,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2361 transitions. [2023-09-01 03:44:40,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 393.5) internal successors, (2361), 6 states have internal predecessors, (2361), 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) [2023-09-01 03:44:40,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 945.0) internal successors, (6615), 7 states have internal predecessors, (6615), 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) [2023-09-01 03:44:40,130 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 945.0) internal successors, (6615), 7 states have internal predecessors, (6615), 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) [2023-09-01 03:44:40,130 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 241 flow. Second operand 6 states and 2361 transitions. [2023-09-01 03:44:40,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 293 transitions, 1315 flow [2023-09-01 03:44:40,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 293 transitions, 1281 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 03:44:40,138 INFO L231 Difference]: Finished difference. Result has 86 places, 116 transitions, 512 flow [2023-09-01 03:44:40,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=945, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=512, PETRI_PLACES=86, PETRI_TRANSITIONS=116} [2023-09-01 03:44:40,141 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -7 predicate places. [2023-09-01 03:44:40,141 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 116 transitions, 512 flow [2023-09-01 03:44:40,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 344.0) internal successors, (2064), 6 states have internal predecessors, (2064), 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) [2023-09-01 03:44:40,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:44:40,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 03:44:40,156 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 [2023-09-01 03:44:40,352 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 [2023-09-01 03:44:40,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-09-01 03:44:40,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:44:40,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1789108263, now seen corresponding path program 1 times [2023-09-01 03:44:40,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:44:40,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528189087] [2023-09-01 03:44:40,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:44:40,354 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 [2023-09-01 03:44:40,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:44:40,355 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) [2023-09-01 03:44:40,356 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 [2023-09-01 03:44:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:44:40,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 03:44:40,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:44:40,454 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 [2023-09-01 03:44:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:44:40,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 03:44:40,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:44:40,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528189087] [2023-09-01 03:44:40,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528189087] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:44:40,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:44:40,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 03:44:40,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046061619] [2023-09-01 03:44:40,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:44:40,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 03:44:40,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:44:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 03:44:40,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 03:44:40,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 945 [2023-09-01 03:44:40,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 116 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 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) [2023-09-01 03:44:40,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:44:40,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 945 [2023-09-01 03:44:40,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:44:50,956 INFO L130 PetriNetUnfolder]: 61710/86390 cut-off events. [2023-09-01 03:44:50,956 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-09-01 03:44:51,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173328 conditions, 86390 events. 61710/86390 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 11180. Compared 710010 event pairs, 57860 based on Foata normal form. 0/17504 useless extension candidates. Maximal degree in co-relation 173315. Up to 86265 conditions per place. [2023-09-01 03:44:51,429 INFO L137 encePairwiseOnDemand]: 943/945 looper letters, 108 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-09-01 03:44:51,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 115 transitions, 736 flow [2023-09-01 03:44:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 03:44:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 03:44:51,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1208 transitions. [2023-09-01 03:44:51,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42610229276895945 [2023-09-01 03:44:51,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1208 transitions. [2023-09-01 03:44:51,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1208 transitions. [2023-09-01 03:44:51,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:44:51,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1208 transitions. [2023-09-01 03:44:51,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 402.6666666666667) internal successors, (1208), 3 states have internal predecessors, (1208), 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) [2023-09-01 03:44:51,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 945.0) internal successors, (3780), 4 states have internal predecessors, (3780), 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) [2023-09-01 03:44:51,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 945.0) internal successors, (3780), 4 states have internal predecessors, (3780), 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) [2023-09-01 03:44:51,443 INFO L175 Difference]: Start difference. First operand has 86 places, 116 transitions, 512 flow. Second operand 3 states and 1208 transitions. [2023-09-01 03:44:51,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 115 transitions, 736 flow [2023-09-01 03:44:51,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 115 transitions, 689 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-09-01 03:44:51,450 INFO L231 Difference]: Finished difference. Result has 86 places, 115 transitions, 473 flow [2023-09-01 03:44:51,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=945, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=473, PETRI_PLACES=86, PETRI_TRANSITIONS=115} [2023-09-01 03:44:51,452 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -7 predicate places. [2023-09-01 03:44:51,452 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 115 transitions, 473 flow [2023-09-01 03:44:51,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 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) [2023-09-01 03:44:51,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:44:51,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 03:44:51,464 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 [2023-09-01 03:44:51,662 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 [2023-09-01 03:44:51,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-09-01 03:44:51,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:44:51,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1789108264, now seen corresponding path program 1 times [2023-09-01 03:44:51,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:44:51,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441564862] [2023-09-01 03:44:51,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:44:51,664 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 [2023-09-01 03:44:51,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:44:51,666 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) [2023-09-01 03:44:51,668 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 [2023-09-01 03:44:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:44:51,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 03:44:51,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:44:51,799 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 5 [2023-09-01 03:44:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:44:51,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 03:44:51,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:44:51,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441564862] [2023-09-01 03:44:51,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441564862] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:44:51,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:44:51,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 03:44:51,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260533316] [2023-09-01 03:44:51,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:44:51,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 03:44:51,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:44:51,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 03:44:51,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 03:44:52,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 945 [2023-09-01 03:44:52,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 115 transitions, 473 flow. Second operand has 4 states, 4 states have (on average 371.25) internal successors, (1485), 4 states have internal predecessors, (1485), 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) [2023-09-01 03:44:52,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:44:52,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 945 [2023-09-01 03:44:52,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:45:02,853 INFO L130 PetriNetUnfolder]: 61711/86392 cut-off events. [2023-09-01 03:45:02,853 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 03:45:03,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173313 conditions, 86392 events. 61711/86392 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 11292. Compared 710177 event pairs, 57860 based on Foata normal form. 0/17507 useless extension candidates. Maximal degree in co-relation 173300. Up to 86284 conditions per place. [2023-09-01 03:45:03,383 INFO L137 encePairwiseOnDemand]: 940/945 looper letters, 103 selfloop transitions, 12 changer transitions 0/117 dead transitions. [2023-09-01 03:45:03,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 117 transitions, 711 flow [2023-09-01 03:45:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 03:45:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 03:45:03,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1559 transitions. [2023-09-01 03:45:03,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41243386243386243 [2023-09-01 03:45:03,389 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1559 transitions. [2023-09-01 03:45:03,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1559 transitions. [2023-09-01 03:45:03,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:45:03,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1559 transitions. [2023-09-01 03:45:03,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 389.75) internal successors, (1559), 4 states have internal predecessors, (1559), 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) [2023-09-01 03:45:03,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 945.0) internal successors, (4725), 5 states have internal predecessors, (4725), 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) [2023-09-01 03:45:03,403 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 945.0) internal successors, (4725), 5 states have internal predecessors, (4725), 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) [2023-09-01 03:45:03,403 INFO L175 Difference]: Start difference. First operand has 86 places, 115 transitions, 473 flow. Second operand 4 states and 1559 transitions. [2023-09-01 03:45:03,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 117 transitions, 711 flow [2023-09-01 03:45:03,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 117 transitions, 706 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 03:45:03,410 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 513 flow [2023-09-01 03:45:03,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=945, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=513, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2023-09-01 03:45:03,412 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -4 predicate places. [2023-09-01 03:45:03,412 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 513 flow [2023-09-01 03:45:03,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 371.25) internal successors, (1485), 4 states have internal predecessors, (1485), 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) [2023-09-01 03:45:03,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:45:03,413 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 03:45:03,428 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 [2023-09-01 03:45:03,622 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 [2023-09-01 03:45:03,623 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-09-01 03:45:03,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:45:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash -471522840, now seen corresponding path program 2 times [2023-09-01 03:45:03,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:45:03,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138597587] [2023-09-01 03:45:03,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 03:45:03,624 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 [2023-09-01 03:45:03,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:45:03,626 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) [2023-09-01 03:45:03,628 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 [2023-09-01 03:45:03,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 03:45:03,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 03:45:03,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 03:45:03,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:45:03,865 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-09-01 03:45:03,866 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 3 case distinctions, treesize of input 17 treesize of output 44 [2023-09-01 03:45:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:45:04,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:45:04,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:45:04,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:45:04,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138597587] [2023-09-01 03:45:04,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138597587] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:45:04,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 03:45:04,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-09-01 03:45:04,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941633585] [2023-09-01 03:45:04,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 03:45:04,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 03:45:04,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:45:04,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 03:45:04,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-09-01 03:45:13,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 945 [2023-09-01 03:45:13,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 513 flow. Second operand has 12 states, 12 states have (on average 348.0) internal successors, (4176), 12 states have internal predecessors, (4176), 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) [2023-09-01 03:45:13,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:45:13,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 945 [2023-09-01 03:45:13,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:45:17,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:18,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:19,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:21,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:22,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:24,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:26,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:28,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:29,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:33,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:34,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:36,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:40,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:41,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:43,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:46,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:47,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:45:50,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:46:23,516 INFO L130 PetriNetUnfolder]: 169681/237536 cut-off events. [2023-09-01 03:46:23,516 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2023-09-01 03:46:24,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476460 conditions, 237536 events. 169681/237536 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 13852. Compared 2004740 event pairs, 159115 based on Foata normal form. 23/48130 useless extension candidates. Maximal degree in co-relation 476446. Up to 21595 conditions per place. [2023-09-01 03:46:24,956 INFO L137 encePairwiseOnDemand]: 928/945 looper letters, 675 selfloop transitions, 86 changer transitions 0/763 dead transitions. [2023-09-01 03:46:24,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 763 transitions, 3733 flow [2023-09-01 03:46:24,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 03:46:24,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 03:46:24,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4944 transitions. [2023-09-01 03:46:24,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597883597883597 [2023-09-01 03:46:24,970 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4944 transitions. [2023-09-01 03:46:24,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4944 transitions. [2023-09-01 03:46:24,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:46:24,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4944 transitions. [2023-09-01 03:46:24,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 412.0) internal successors, (4944), 12 states have internal predecessors, (4944), 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) [2023-09-01 03:46:24,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 945.0) internal successors, (12285), 13 states have internal predecessors, (12285), 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) [2023-09-01 03:46:25,000 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 945.0) internal successors, (12285), 13 states have internal predecessors, (12285), 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) [2023-09-01 03:46:25,001 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 513 flow. Second operand 12 states and 4944 transitions. [2023-09-01 03:46:25,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 763 transitions, 3733 flow [2023-09-01 03:46:25,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 763 transitions, 3693 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 03:46:25,012 INFO L231 Difference]: Finished difference. Result has 105 places, 169 transitions, 1169 flow [2023-09-01 03:46:25,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=945, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1169, PETRI_PLACES=105, PETRI_TRANSITIONS=169} [2023-09-01 03:46:25,013 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 12 predicate places. [2023-09-01 03:46:25,013 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 169 transitions, 1169 flow [2023-09-01 03:46:25,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 348.0) internal successors, (4176), 12 states have internal predecessors, (4176), 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) [2023-09-01 03:46:25,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:46:25,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 03:46:25,025 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 [2023-09-01 03:46:25,225 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 [2023-09-01 03:46:25,226 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-09-01 03:46:25,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:46:25,226 INFO L85 PathProgramCache]: Analyzing trace with hash -372211571, now seen corresponding path program 1 times [2023-09-01 03:46:25,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:46:25,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235085472] [2023-09-01 03:46:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:46:25,227 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 [2023-09-01 03:46:25,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:46:25,228 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) [2023-09-01 03:46:25,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-09-01 03:46:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:46:25,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 03:46:25,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:46:25,365 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 5 [2023-09-01 03:46:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:46:25,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 03:46:25,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:46:25,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235085472] [2023-09-01 03:46:25,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235085472] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:46:25,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:46:25,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 03:46:25,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801133558] [2023-09-01 03:46:25,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:46:25,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 03:46:25,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:46:25,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 03:46:25,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 03:46:26,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 945 [2023-09-01 03:46:26,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 169 transitions, 1169 flow. Second operand has 5 states, 5 states have (on average 353.2) internal successors, (1766), 5 states have internal predecessors, (1766), 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) [2023-09-01 03:46:26,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:46:26,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 945 [2023-09-01 03:46:26,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand