./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-memsafety/fillarray.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a31fd051 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 ../sv-benchmarks/c/pthread-memsafety/fillarray.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 13:34:21,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:34:21,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:34:21,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:34:21,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:34:21,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:34:21,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:34:21,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:34:21,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:34:21,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:34:21,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:34:21,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:34:21,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:34:21,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:34:21,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:34:21,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:34:21,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:34:21,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:34:21,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:34:21,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:34:21,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:34:21,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:34:21,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:34:21,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:34:21,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:34:21,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:34:21,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:34:21,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:34:21,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:34:21,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:34:21,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:34:21,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:34:21,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:34:21,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:34:21,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:34:21,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:34:21,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:34:21,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:34:21,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:34:21,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:34:21,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:34:21,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 13:34:21,794 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:34:21,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:34:21,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:34:21,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:34:21,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:34:21,796 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:34:21,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:34:21,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:34:21,796 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:34:21,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:34:21,797 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 13:34:21,797 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:34:21,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:34:21,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 13:34:21,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:34:21,798 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 13:34:21,798 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 13:34:21,798 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 13:34:21,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:34:21,798 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 13:34:21,798 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 13:34:21,799 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:34:21,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:34:21,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:34:21,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:34:21,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:34:21,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:34:21,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:34:21,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 13:34:21,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 13:34:21,800 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:34:21,800 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:34:21,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:34:21,800 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:34:21,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2023-02-15 13:34:22,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:34:22,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:34:22,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:34:22,032 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:34:22,033 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:34:22,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-02-15 13:34:22,985 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:34:23,283 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:34:23,285 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-02-15 13:34:23,299 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f533687d/41b4e4f62cd641f79b0d7e28d5c563eb/FLAG809bd9fba [2023-02-15 13:34:23,313 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f533687d/41b4e4f62cd641f79b0d7e28d5c563eb [2023-02-15 13:34:23,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:34:23,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:34:23,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:34:23,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:34:23,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:34:23,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:34:23" (1/1) ... [2023-02-15 13:34:23,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eff4a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:23, skipping insertion in model container [2023-02-15 13:34:23,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:34:23" (1/1) ... [2023-02-15 13:34:23,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:34:23,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:34:23,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:34:23,680 ERROR L326 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) [2023-02-15 13:34:23,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f956b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:23, skipping insertion in model container [2023-02-15 13:34:23,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:34:23,682 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-15 13:34:23,684 INFO L158 Benchmark]: Toolchain (without parser) took 366.95ms. Allocated memory is still 165.7MB. Free memory was 132.9MB in the beginning and 119.4MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-15 13:34:23,685 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:34:23,685 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.65ms. Allocated memory is still 165.7MB. Free memory was 132.9MB in the beginning and 119.4MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-15 13:34:23,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.65ms. Allocated memory is still 165.7MB. Free memory was 132.9MB in the beginning and 119.4MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1041]: 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 ../sv-benchmarks/c/pthread-memsafety/fillarray.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 13:34:25,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:34:25,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:34:25,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:34:25,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:34:25,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:34:25,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:34:25,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:34:25,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:34:25,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:34:25,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:34:25,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:34:25,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:34:25,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:34:25,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:34:25,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:34:25,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:34:25,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:34:25,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:34:25,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:34:25,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:34:25,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:34:25,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:34:25,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:34:25,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:34:25,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:34:25,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:34:25,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:34:25,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:34:25,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:34:25,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:34:25,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:34:25,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:34:25,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:34:25,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:34:25,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:34:25,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:34:25,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:34:25,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:34:25,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:34:25,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:34:25,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-15 13:34:25,297 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:34:25,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:34:25,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:34:25,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:34:25,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:34:25,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:34:25,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:34:25,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:34:25,299 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:34:25,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:34:25,299 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 13:34:25,299 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:34:25,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:34:25,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 13:34:25,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:34:25,300 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 13:34:25,300 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 13:34:25,300 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 13:34:25,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:34:25,300 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 13:34:25,300 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 13:34:25,301 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 13:34:25,301 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 13:34:25,301 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:34:25,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:34:25,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:34:25,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:34:25,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:34:25,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:34:25,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:34:25,302 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 13:34:25,302 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 13:34:25,302 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:34:25,302 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:34:25,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:34:25,303 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 13:34:25,303 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:34:25,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2023-02-15 13:34:25,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:34:25,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:34:25,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:34:25,545 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:34:25,546 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:34:25,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-02-15 13:34:26,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:34:26,736 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:34:26,737 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-02-15 13:34:26,748 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/589e7f386/f64b816cc33144359a4cdfa6629e6de1/FLAGd779be20a [2023-02-15 13:34:26,759 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/589e7f386/f64b816cc33144359a4cdfa6629e6de1 [2023-02-15 13:34:26,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:34:26,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:34:26,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:34:26,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:34:26,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:34:26,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:34:26" (1/1) ... [2023-02-15 13:34:26,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c6fd23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:26, skipping insertion in model container [2023-02-15 13:34:26,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:34:26" (1/1) ... [2023-02-15 13:34:26,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:34:26,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:34:27,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:34:27,052 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-15 13:34:27,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:34:27,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:34:27,096 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 13:34:27,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:34:27,182 INFO L208 MainTranslator]: Completed translation [2023-02-15 13:34:27,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:27 WrapperNode [2023-02-15 13:34:27,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:34:27,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 13:34:27,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 13:34:27,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 13:34:27,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:27" (1/1) ... [2023-02-15 13:34:27,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:27" (1/1) ... [2023-02-15 13:34:27,233 INFO L138 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2023-02-15 13:34:27,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 13:34:27,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 13:34:27,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 13:34:27,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 13:34:27,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:27" (1/1) ... [2023-02-15 13:34:27,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:27" (1/1) ... [2023-02-15 13:34:27,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:27" (1/1) ... [2023-02-15 13:34:27,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:27" (1/1) ... [2023-02-15 13:34:27,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:27" (1/1) ... [2023-02-15 13:34:27,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:27" (1/1) ... [2023-02-15 13:34:27,270 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:27" (1/1) ... [2023-02-15 13:34:27,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:27" (1/1) ... [2023-02-15 13:34:27,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 13:34:27,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 13:34:27,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 13:34:27,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 13:34:27,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:27" (1/1) ... [2023-02-15 13:34:27,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:34:27,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:34:27,303 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) [2023-02-15 13:34:27,337 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 [2023-02-15 13:34:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-02-15 13:34:27,359 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-02-15 13:34:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-02-15 13:34:27,360 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-02-15 13:34:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 13:34:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 13:34:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-15 13:34:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 13:34:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 13:34:27,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 13:34:27,362 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2023-02-15 13:34:27,548 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 13:34:27,549 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 13:34:27,792 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 13:34:27,798 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 13:34:27,799 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 13:34:27,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:34:27 BoogieIcfgContainer [2023-02-15 13:34:27,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 13:34:27,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 13:34:27,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 13:34:27,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 13:34:27,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:34:26" (1/3) ... [2023-02-15 13:34:27,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d058b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:34:27, skipping insertion in model container [2023-02-15 13:34:27,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:34:27" (2/3) ... [2023-02-15 13:34:27,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d058b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:34:27, skipping insertion in model container [2023-02-15 13:34:27,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:34:27" (3/3) ... [2023-02-15 13:34:27,809 INFO L112 eAbstractionObserver]: Analyzing ICFG fillarray.i [2023-02-15 13:34:27,821 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 13:34:27,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-02-15 13:34:27,822 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-02-15 13:34:27,909 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-02-15 13:34:27,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 90 transitions, 190 flow [2023-02-15 13:34:27,983 INFO L130 PetriNetUnfolder]: 4/94 cut-off events. [2023-02-15 13:34:27,983 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-15 13:34:27,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 94 events. 4/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2023-02-15 13:34:27,988 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 90 transitions, 190 flow [2023-02-15 13:34:27,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 88 transitions, 182 flow [2023-02-15 13:34:27,994 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-02-15 13:34:28,007 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 88 transitions, 182 flow [2023-02-15 13:34:28,010 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 88 transitions, 182 flow [2023-02-15 13:34:28,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 88 transitions, 182 flow [2023-02-15 13:34:28,036 INFO L130 PetriNetUnfolder]: 4/94 cut-off events. [2023-02-15 13:34:28,037 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-15 13:34:28,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 94 events. 4/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2023-02-15 13:34:28,039 INFO L119 LiptonReduction]: Number of co-enabled transitions 1586 [2023-02-15 13:34:32,926 INFO L134 LiptonReduction]: Checked pairs total: 4000 [2023-02-15 13:34:32,926 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-02-15 13:34:32,943 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 13:34:32,949 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;@6c7fe3cd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 13:34:32,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-02-15 13:34:32,952 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-02-15 13:34:32,952 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-15 13:34:32,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 13:34:32,953 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2023-02-15 13:34:32,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 13:34:32,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:34:32,957 INFO L85 PathProgramCache]: Analyzing trace with hash 342, now seen corresponding path program 1 times [2023-02-15 13:34:32,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:34:32,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480444743] [2023-02-15 13:34:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:34:32,968 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 [2023-02-15 13:34:32,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:34:32,997 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) [2023-02-15 13:34:33,015 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 [2023-02-15 13:34:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:34:33,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 13:34:33,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:34:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:34:33,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:34:33,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:34:33,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480444743] [2023-02-15 13:34:33,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480444743] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:34:33,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:34:33,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-02-15 13:34:33,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712698375] [2023-02-15 13:34:33,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:34:33,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 13:34:33,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:34:33,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 13:34:33,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 13:34:33,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 173 [2023-02-15 13:34:33,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 72 flow. Second operand has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 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) [2023-02-15 13:34:33,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 13:34:33,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 173 [2023-02-15 13:34:33,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 13:34:33,264 INFO L130 PetriNetUnfolder]: 277/505 cut-off events. [2023-02-15 13:34:33,268 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-02-15 13:34:33,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 505 events. 277/505 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2634 event pairs, 241 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 956. Up to 453 conditions per place. [2023-02-15 13:34:33,274 INFO L137 encePairwiseOnDemand]: 171/173 looper letters, 22 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2023-02-15 13:34:33,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 112 flow [2023-02-15 13:34:33,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 13:34:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-02-15 13:34:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 196 transitions. [2023-02-15 13:34:33,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664739884393064 [2023-02-15 13:34:33,285 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 196 transitions. [2023-02-15 13:34:33,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 196 transitions. [2023-02-15 13:34:33,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 13:34:33,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 196 transitions. [2023-02-15 13:34:33,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 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) [2023-02-15 13:34:33,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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) [2023-02-15 13:34:33,297 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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) [2023-02-15 13:34:33,299 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 72 flow. Second operand 2 states and 196 transitions. [2023-02-15 13:34:33,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 112 flow [2023-02-15 13:34:33,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-15 13:34:33,301 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 66 flow [2023-02-15 13:34:33,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=66, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-02-15 13:34:33,306 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-02-15 13:34:33,307 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 66 flow [2023-02-15 13:34:33,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 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) [2023-02-15 13:34:33,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 13:34:33,308 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-02-15 13:34:33,329 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 [2023-02-15 13:34:33,515 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 [2023-02-15 13:34:33,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 13:34:33,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:34:33,521 INFO L85 PathProgramCache]: Analyzing trace with hash 10697, now seen corresponding path program 1 times [2023-02-15 13:34:33,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:34:33,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89904832] [2023-02-15 13:34:33,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:34:33,522 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 [2023-02-15 13:34:33,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:34:33,524 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) [2023-02-15 13:34:33,553 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 [2023-02-15 13:34:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:34:33,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 13:34:33,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:34:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:34:33,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:34:33,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:34:33,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89904832] [2023-02-15 13:34:33,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89904832] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:34:33,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:34:33,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-15 13:34:33,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491051002] [2023-02-15 13:34:33,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:34:33,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:34:33,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:34:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:34:33,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:34:33,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 173 [2023-02-15 13:34:33,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:34:33,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 13:34:33,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 173 [2023-02-15 13:34:33,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 13:34:33,822 INFO L130 PetriNetUnfolder]: 312/539 cut-off events. [2023-02-15 13:34:33,822 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-15 13:34:33,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1059 conditions, 539 events. 312/539 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2681 event pairs, 241 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 1056. Up to 451 conditions per place. [2023-02-15 13:34:33,826 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 29 selfloop transitions, 1 changer transitions 2/40 dead transitions. [2023-02-15 13:34:33,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 148 flow [2023-02-15 13:34:33,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:34:33,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-15 13:34:33,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-02-15 13:34:33,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5028901734104047 [2023-02-15 13:34:33,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-02-15 13:34:33,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-02-15 13:34:33,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 13:34:33,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-02-15 13:34:33,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2023-02-15 13:34:33,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 13:34:33,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 13:34:33,831 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 66 flow. Second operand 3 states and 261 transitions. [2023-02-15 13:34:33,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 148 flow [2023-02-15 13:34:33,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 148 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-02-15 13:34:33,832 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 69 flow [2023-02-15 13:34:33,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-02-15 13:34:33,833 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-02-15 13:34:33,833 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 69 flow [2023-02-15 13:34:33,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:34:33,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 13:34:33,833 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-02-15 13:34:33,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-15 13:34:34,040 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 [2023-02-15 13:34:34,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 13:34:34,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:34:34,041 INFO L85 PathProgramCache]: Analyzing trace with hash 334998, now seen corresponding path program 1 times [2023-02-15 13:34:34,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:34:34,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201755394] [2023-02-15 13:34:34,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:34:34,041 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 [2023-02-15 13:34:34,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:34:34,043 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) [2023-02-15 13:34:34,045 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 [2023-02-15 13:34:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:34:34,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 13:34:34,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:34:34,167 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-02-15 13:34:34,167 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 2 case distinctions, treesize of input 12 treesize of output 27 [2023-02-15 13:34:34,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:34:34,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:34:34,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:34:34,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201755394] [2023-02-15 13:34:34,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201755394] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:34:34,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:34:34,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-15 13:34:34,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041802366] [2023-02-15 13:34:34,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:34:34,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:34:34,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:34:34,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:34:34,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:34:34,234 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 173 [2023-02-15 13:34:34,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:34:34,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 13:34:34,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 173 [2023-02-15 13:34:34,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 13:34:34,310 INFO L130 PetriNetUnfolder]: 273/490 cut-off events. [2023-02-15 13:34:34,311 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-02-15 13:34:34,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 490 events. 273/490 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2479 event pairs, 176 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 983. Up to 333 conditions per place. [2023-02-15 13:34:34,314 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 26 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-02-15 13:34:34,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 139 flow [2023-02-15 13:34:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:34:34,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-15 13:34:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-02-15 13:34:34,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5240847784200385 [2023-02-15 13:34:34,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-02-15 13:34:34,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-02-15 13:34:34,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 13:34:34,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-02-15 13:34:34,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:34:34,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 13:34:34,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 13:34:34,319 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 69 flow. Second operand 3 states and 272 transitions. [2023-02-15 13:34:34,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 139 flow [2023-02-15 13:34:34,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 135 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-02-15 13:34:34,322 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 67 flow [2023-02-15 13:34:34,322 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-02-15 13:34:34,323 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-02-15 13:34:34,323 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 67 flow [2023-02-15 13:34:34,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:34:34,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 13:34:34,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-02-15 13:34:34,332 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 [2023-02-15 13:34:34,530 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 [2023-02-15 13:34:34,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 13:34:34,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:34:34,531 INFO L85 PathProgramCache]: Analyzing trace with hash 334999, now seen corresponding path program 1 times [2023-02-15 13:34:34,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:34:34,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630361866] [2023-02-15 13:34:34,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:34:34,532 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 [2023-02-15 13:34:34,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:34:34,533 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) [2023-02-15 13:34:34,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-15 13:34:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:34:34,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 13:34:34,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:34:34,629 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-02-15 13:34:34,629 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 2 case distinctions, treesize of input 12 treesize of output 33 [2023-02-15 13:34:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:34:34,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:34:34,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:34:34,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630361866] [2023-02-15 13:34:34,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630361866] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:34:34,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:34:34,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-15 13:34:34,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24469074] [2023-02-15 13:34:34,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:34:34,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:34:34,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:34:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:34:34,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:34:34,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 173 [2023-02-15 13:34:34,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2023-02-15 13:34:34,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 13:34:34,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 173 [2023-02-15 13:34:34,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 13:34:34,764 INFO L130 PetriNetUnfolder]: 269/478 cut-off events. [2023-02-15 13:34:34,764 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-15 13:34:34,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 478 events. 269/478 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2345 event pairs, 135 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 965. Up to 221 conditions per place. [2023-02-15 13:34:34,766 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 25 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-02-15 13:34:34,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 135 flow [2023-02-15 13:34:34,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:34:34,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-15 13:34:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-02-15 13:34:34,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5048169556840078 [2023-02-15 13:34:34,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-02-15 13:34:34,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-02-15 13:34:34,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 13:34:34,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-02-15 13:34:34,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2023-02-15 13:34:34,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 13:34:34,771 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 13:34:34,771 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 67 flow. Second operand 3 states and 262 transitions. [2023-02-15 13:34:34,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 135 flow [2023-02-15 13:34:34,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 131 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-15 13:34:34,772 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 65 flow [2023-02-15 13:34:34,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-02-15 13:34:34,773 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-02-15 13:34:34,773 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 65 flow [2023-02-15 13:34:34,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2023-02-15 13:34:34,773 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 13:34:34,773 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-15 13:34:34,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-02-15 13:34:34,980 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 [2023-02-15 13:34:34,980 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 13:34:34,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:34:34,981 INFO L85 PathProgramCache]: Analyzing trace with hash 321942368, now seen corresponding path program 1 times [2023-02-15 13:34:34,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:34:34,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540972370] [2023-02-15 13:34:34,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:34:34,982 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 [2023-02-15 13:34:34,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:34:34,983 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) [2023-02-15 13:34:35,009 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 [2023-02-15 13:34:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:34:35,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 13:34:35,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:34:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:34:35,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:34:35,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:34:35,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540972370] [2023-02-15 13:34:35,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540972370] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:34:35,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:34:35,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-15 13:34:35,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266500950] [2023-02-15 13:34:35,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:34:35,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:34:35,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:34:35,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:34:35,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:34:35,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 173 [2023-02-15 13:34:35,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-02-15 13:34:35,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 13:34:35,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 173 [2023-02-15 13:34:35,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 13:34:35,177 INFO L130 PetriNetUnfolder]: 234/423 cut-off events. [2023-02-15 13:34:35,177 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-02-15 13:34:35,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 423 events. 234/423 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2049 event pairs, 204 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 855. Up to 381 conditions per place. [2023-02-15 13:34:35,180 INFO L137 encePairwiseOnDemand]: 171/173 looper letters, 17 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-02-15 13:34:35,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 99 flow [2023-02-15 13:34:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:34:35,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-15 13:34:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-02-15 13:34:35,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5105973025048169 [2023-02-15 13:34:35,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-02-15 13:34:35,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-02-15 13:34:35,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 13:34:35,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-02-15 13:34:35,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2023-02-15 13:34:35,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 13:34:35,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 13:34:35,187 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 65 flow. Second operand 3 states and 265 transitions. [2023-02-15 13:34:35,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 99 flow [2023-02-15 13:34:35,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 27 transitions, 95 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-15 13:34:35,188 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 61 flow [2023-02-15 13:34:35,188 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-02-15 13:34:35,190 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-02-15 13:34:35,190 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 61 flow [2023-02-15 13:34:35,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-02-15 13:34:35,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 13:34:35,191 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-15 13:34:35,212 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 [2023-02-15 13:34:35,398 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 [2023-02-15 13:34:35,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 13:34:35,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:34:35,399 INFO L85 PathProgramCache]: Analyzing trace with hash 321942341, now seen corresponding path program 1 times [2023-02-15 13:34:35,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:34:35,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95983458] [2023-02-15 13:34:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:34:35,401 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 [2023-02-15 13:34:35,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:34:35,418 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) [2023-02-15 13:34:35,455 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 [2023-02-15 13:34:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:34:35,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 13:34:35,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:34:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:34:35,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:34:35,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:34:35,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95983458] [2023-02-15 13:34:35,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95983458] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:34:35,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:34:35,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-15 13:34:35,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706721599] [2023-02-15 13:34:35,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:34:35,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:34:35,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:34:35,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:34:35,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:34:35,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 173 [2023-02-15 13:34:35,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-02-15 13:34:35,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 13:34:35,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 173 [2023-02-15 13:34:35,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 13:34:35,597 INFO L130 PetriNetUnfolder]: 199/368 cut-off events. [2023-02-15 13:34:35,598 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-15 13:34:35,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 368 events. 199/368 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1755 event pairs, 173 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 725. Up to 326 conditions per place. [2023-02-15 13:34:35,599 INFO L137 encePairwiseOnDemand]: 171/173 looper letters, 16 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-02-15 13:34:35,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 93 flow [2023-02-15 13:34:35,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:34:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-15 13:34:35,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-02-15 13:34:35,601 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5086705202312138 [2023-02-15 13:34:35,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-02-15 13:34:35,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-02-15 13:34:35,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 13:34:35,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-02-15 13:34:35,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2023-02-15 13:34:35,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 13:34:35,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 13:34:35,603 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 61 flow. Second operand 3 states and 264 transitions. [2023-02-15 13:34:35,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 93 flow [2023-02-15 13:34:35,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 92 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-02-15 13:34:35,604 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 60 flow [2023-02-15 13:34:35,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-02-15 13:34:35,604 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-02-15 13:34:35,611 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 60 flow [2023-02-15 13:34:35,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-02-15 13:34:35,612 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 13:34:35,612 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-15 13:34:35,635 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 [2023-02-15 13:34:35,812 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 [2023-02-15 13:34:35,812 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 13:34:35,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:34:35,813 INFO L85 PathProgramCache]: Analyzing trace with hash 321942369, now seen corresponding path program 1 times [2023-02-15 13:34:35,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:34:35,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873909656] [2023-02-15 13:34:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:34:35,813 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 [2023-02-15 13:34:35,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:34:35,815 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) [2023-02-15 13:34:35,818 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 [2023-02-15 13:34:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:34:35,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 13:34:35,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:34:35,904 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-02-15 13:34:35,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2023-02-15 13:34:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:34:35,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:34:35,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:34:35,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873909656] [2023-02-15 13:34:35,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873909656] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:34:35,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:34:35,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-15 13:34:35,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865121777] [2023-02-15 13:34:35,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:34:35,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:34:35,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:34:35,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:34:35,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:34:36,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 173 [2023-02-15 13:34:36,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2023-02-15 13:34:36,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 13:34:36,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 173 [2023-02-15 13:34:36,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 13:34:36,111 INFO L130 PetriNetUnfolder]: 164/313 cut-off events. [2023-02-15 13:34:36,112 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-15 13:34:36,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 313 events. 164/313 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1470 event pairs, 18 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 616. Up to 221 conditions per place. [2023-02-15 13:34:36,113 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 22 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-02-15 13:34:36,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 122 flow [2023-02-15 13:34:36,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:34:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-15 13:34:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-02-15 13:34:36,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5105973025048169 [2023-02-15 13:34:36,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-02-15 13:34:36,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-02-15 13:34:36,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 13:34:36,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-02-15 13:34:36,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2023-02-15 13:34:36,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 13:34:36,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 13:34:36,117 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 60 flow. Second operand 3 states and 265 transitions. [2023-02-15 13:34:36,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 122 flow [2023-02-15 13:34:36,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-02-15 13:34:36,118 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 61 flow [2023-02-15 13:34:36,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-02-15 13:34:36,119 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-02-15 13:34:36,119 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 61 flow [2023-02-15 13:34:36,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2023-02-15 13:34:36,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 13:34:36,119 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:34:36,127 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 (8)] Ended with exit code 0 [2023-02-15 13:34:36,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:34:36,327 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 13:34:36,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:34:36,327 INFO L85 PathProgramCache]: Analyzing trace with hash 123146058, now seen corresponding path program 1 times [2023-02-15 13:34:36,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:34:36,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573415398] [2023-02-15 13:34:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:34:36,328 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 [2023-02-15 13:34:36,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:34:36,329 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:34:36,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-15 13:34:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:34:36,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 13:34:36,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:34:36,427 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-02-15 13:34:36,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2023-02-15 13:34:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:34:36,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:34:36,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:34:36,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573415398] [2023-02-15 13:34:36,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573415398] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:34:36,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:34:36,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 13:34:36,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597537345] [2023-02-15 13:34:36,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:34:36,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:34:36,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:34:36,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:34:36,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:34:36,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-02-15 13:34:36,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2023-02-15 13:34:36,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 13:34:36,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-02-15 13:34:36,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 13:34:36,951 INFO L130 PetriNetUnfolder]: 224/391 cut-off events. [2023-02-15 13:34:36,952 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-02-15 13:34:36,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 391 events. 224/391 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1742 event pairs, 19 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 802. Up to 296 conditions per place. [2023-02-15 13:34:36,953 INFO L137 encePairwiseOnDemand]: 168/173 looper letters, 30 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-02-15 13:34:36,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 169 flow [2023-02-15 13:34:36,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 13:34:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-02-15 13:34:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-02-15 13:34:36,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4867052023121387 [2023-02-15 13:34:36,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-02-15 13:34:36,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-02-15 13:34:36,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 13:34:36,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-02-15 13:34:36,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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) [2023-02-15 13:34:36,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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) [2023-02-15 13:34:36,958 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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) [2023-02-15 13:34:36,958 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 61 flow. Second operand 5 states and 421 transitions. [2023-02-15 13:34:36,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 169 flow [2023-02-15 13:34:36,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-15 13:34:36,959 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 80 flow [2023-02-15 13:34:36,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2023-02-15 13:34:36,960 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2023-02-15 13:34:36,960 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 80 flow [2023-02-15 13:34:36,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2023-02-15 13:34:36,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 13:34:36,960 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:34:36,985 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 (9)] Forceful destruction successful, exit code 0 [2023-02-15 13:34:37,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:34:37,169 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 13:34:37,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:34:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash 123146059, now seen corresponding path program 1 times [2023-02-15 13:34:37,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:34:37,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080320360] [2023-02-15 13:34:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:34:37,170 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 [2023-02-15 13:34:37,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:34:37,177 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:34:37,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-15 13:34:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 13:34:37,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 13:34:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 13:34:37,350 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-02-15 13:34:37,350 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 13:34:37,350 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2023-02-15 13:34:37,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2023-02-15 13:34:37,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-02-15 13:34:37,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2023-02-15 13:34:37,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-02-15 13:34:37,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-02-15 13:34:37,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 18 remaining) [2023-02-15 13:34:37,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 18 remaining) [2023-02-15 13:34:37,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 18 remaining) [2023-02-15 13:34:37,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-02-15 13:34:37,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-02-15 13:34:37,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-02-15 13:34:37,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-02-15 13:34:37,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-02-15 13:34:37,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2023-02-15 13:34:37,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2023-02-15 13:34:37,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2023-02-15 13:34:37,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2023-02-15 13:34:37,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-15 13:34:37,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:34:37,553 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:34:37,558 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-02-15 13:34:37,558 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 13:34:37,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 01:34:37 BasicIcfg [2023-02-15 13:34:37,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 13:34:37,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 13:34:37,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 13:34:37,590 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 13:34:37,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:34:27" (3/4) ... [2023-02-15 13:34:37,592 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-15 13:34:37,617 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 13:34:37,617 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 13:34:37,617 INFO L158 Benchmark]: Toolchain (without parser) took 10855.09ms. Allocated memory was 81.8MB in the beginning and 134.2MB in the end (delta: 52.4MB). Free memory was 56.7MB in the beginning and 38.4MB in the end (delta: 18.3MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. [2023-02-15 13:34:37,618 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 81.8MB. Free memory is still 58.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:34:37,618 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.89ms. Allocated memory is still 81.8MB. Free memory was 56.5MB in the beginning and 47.4MB in the end (delta: 9.0MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2023-02-15 13:34:37,618 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.32ms. Allocated memory is still 81.8MB. Free memory was 47.4MB in the beginning and 45.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 13:34:37,618 INFO L158 Benchmark]: Boogie Preprocessor took 45.51ms. Allocated memory is still 81.8MB. Free memory was 45.0MB in the beginning and 43.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 13:34:37,618 INFO L158 Benchmark]: RCFGBuilder took 520.45ms. Allocated memory was 81.8MB in the beginning and 111.1MB in the end (delta: 29.4MB). Free memory was 43.3MB in the beginning and 79.7MB in the end (delta: -36.5MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2023-02-15 13:34:37,619 INFO L158 Benchmark]: TraceAbstraction took 9785.34ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 78.7MB in the beginning and 41.6MB in the end (delta: 37.1MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. [2023-02-15 13:34:37,619 INFO L158 Benchmark]: Witness Printer took 26.87ms. Allocated memory is still 134.2MB. Free memory was 41.6MB in the beginning and 38.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 13:34:37,620 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 81.8MB. Free memory is still 58.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.89ms. Allocated memory is still 81.8MB. Free memory was 56.5MB in the beginning and 47.4MB in the end (delta: 9.0MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.32ms. Allocated memory is still 81.8MB. Free memory was 47.4MB in the beginning and 45.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.51ms. Allocated memory is still 81.8MB. Free memory was 45.0MB in the beginning and 43.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 520.45ms. Allocated memory was 81.8MB in the beginning and 111.1MB in the end (delta: 29.4MB). Free memory was 43.3MB in the beginning and 79.7MB in the end (delta: -36.5MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9785.34ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 78.7MB in the beginning and 41.6MB in the end (delta: 37.1MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. * Witness Printer took 26.87ms. Allocated memory is still 134.2MB. Free memory was 41.6MB in the beginning and 38.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 90 PlacesBefore, 37 PlacesAfterwards, 88 TransitionsBefore, 33 TransitionsAfterwards, 1586 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 83 TotalNumberOfCompositions, 4000 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2040, independent: 1886, independent conditional: 0, independent unconditional: 1886, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 780, independent: 752, independent conditional: 0, independent unconditional: 752, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2040, independent: 1134, independent conditional: 0, independent unconditional: 1134, dependent: 126, dependent conditional: 0, dependent unconditional: 126, unknown: 780, unknown conditional: 0, unknown unconditional: 780] , Statistics on independence cache: Total cache size (in pairs): 134, Positive cache size: 120, Positive conditional cache size: 0, Positive unconditional cache size: 120, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1037] 0 int size; [L1038] 0 int ind; [L1039] 0 int j = 2, i = 1; [L1057] 0 size = __VERIFIER_nondet_int() [L1058] COND FALSE 0 !(size < 1 || size > 20) [L1061] 0 int *a = (int *)malloc(size); [L1062] 0 pthread_t id1, id2; [L1063] 0 ind = 0 [L1064] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [\old(argc)=5, a={1:0}, arg={1:0}, argc=5, argv={9:6}, argv={9:6}, i=1, id1={3:0}, id2={7:0}, ind=0, j=2, pthread_create(&id1, ((void *)0), t1, a)=0, size=2] [L1041] 1 int *a = (int *)arg; VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2] [L1042] COND TRUE 1 ind < size - 1 VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2] [L1043] 1 ++ind VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=1, j=2, size=2] [L1044] 1 a[ind] = i - UnprovableResult [Line: 1056]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 443 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 232 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 555 IncrementalHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 45 mSDtfsCounter, 555 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=8, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 23 ConstructedInterpolants, 10 QuantifiedInterpolants, 269 SizeOfPredicates, 11 NumberOfNonLiveVariables, 398 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-15 13:34:37,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)