./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-memsafety/fillarray1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 26d01a9c 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/fillarray1.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 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 07:11:52,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 07:11:52,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 07:11:52,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 07:11:52,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 07:11:52,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 07:11:52,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 07:11:52,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 07:11:52,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 07:11:52,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 07:11:52,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 07:11:52,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 07:11:52,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 07:11:52,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 07:11:52,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 07:11:52,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 07:11:52,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 07:11:52,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 07:11:52,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 07:11:52,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 07:11:52,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 07:11:52,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 07:11:52,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 07:11:52,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 07:11:52,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 07:11:52,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 07:11:52,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 07:11:52,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 07:11:52,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 07:11:52,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 07:11:52,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 07:11:52,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 07:11:52,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 07:11:52,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 07:11:52,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 07:11:52,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 07:11:52,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 07:11:52,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 07:11:52,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 07:11:52,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 07:11:52,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 07:11:52,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 07:11:52,730 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 07:11:52,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 07:11:52,731 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 07:11:52,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 07:11:52,732 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 07:11:52,732 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 07:11:52,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 07:11:52,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 07:11:52,733 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 07:11:52,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 07:11:52,734 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 07:11:52,734 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 07:11:52,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 07:11:52,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 07:11:52,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 07:11:52,734 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 07:11:52,734 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 07:11:52,735 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 07:11:52,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 07:11:52,735 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 07:11:52,735 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 07:11:52,735 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 07:11:52,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 07:11:52,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 07:11:52,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 07:11:52,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:11:52,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 07:11:52,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 07:11:52,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 07:11:52,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 07:11:52,737 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 07:11:52,737 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 07:11:52,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 07:11:52,737 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 07:11:52,737 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2023-02-18 07:11:52,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 07:11:52,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 07:11:52,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 07:11:52,963 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 07:11:52,964 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 07:11:52,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2023-02-18 07:11:53,958 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 07:11:54,232 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 07:11:54,236 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2023-02-18 07:11:54,249 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a49849575/dd795b1bd6854c9cbf3c92db8605dc01/FLAG21a9019a8 [2023-02-18 07:11:54,260 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a49849575/dd795b1bd6854c9cbf3c92db8605dc01 [2023-02-18 07:11:54,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 07:11:54,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 07:11:54,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 07:11:54,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 07:11:54,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 07:11:54,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:11:54" (1/1) ... [2023-02-18 07:11:54,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dbb5e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:54, skipping insertion in model container [2023-02-18 07:11:54,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:11:54" (1/1) ... [2023-02-18 07:11:54,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 07:11:54,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:11:54,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:11:54,630 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) [2023-02-18 07:11:54,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1a044d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:54, skipping insertion in model container [2023-02-18 07:11:54,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 07:11:54,632 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-18 07:11:54,634 INFO L158 Benchmark]: Toolchain (without parser) took 370.22ms. Allocated memory is still 153.1MB. Free memory was 120.7MB in the beginning and 106.9MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-18 07:11:54,635 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 70.7MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 07:11:54,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.40ms. Allocated memory is still 153.1MB. Free memory was 120.7MB in the beginning and 106.9MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-18 07:11:54,636 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 117.4MB. Free memory was 70.9MB in the beginning and 70.7MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.40ms. Allocated memory is still 153.1MB. Free memory was 120.7MB in the beginning and 106.9MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /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/fillarray1.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 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 07:11:56,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 07:11:56,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 07:11:56,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 07:11:56,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 07:11:56,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 07:11:56,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 07:11:56,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 07:11:56,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 07:11:56,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 07:11:56,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 07:11:56,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 07:11:56,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 07:11:56,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 07:11:56,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 07:11:56,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 07:11:56,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 07:11:56,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 07:11:56,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 07:11:56,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 07:11:56,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 07:11:56,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 07:11:56,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 07:11:56,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 07:11:56,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 07:11:56,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 07:11:56,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 07:11:56,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 07:11:56,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 07:11:56,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 07:11:56,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 07:11:56,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 07:11:56,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 07:11:56,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 07:11:56,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 07:11:56,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 07:11:56,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 07:11:56,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 07:11:56,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 07:11:56,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 07:11:56,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 07:11:56,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-18 07:11:56,318 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 07:11:56,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 07:11:56,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 07:11:56,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 07:11:56,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 07:11:56,320 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 07:11:56,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 07:11:56,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 07:11:56,321 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 07:11:56,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 07:11:56,321 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 07:11:56,322 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 07:11:56,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 07:11:56,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 07:11:56,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 07:11:56,322 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 07:11:56,322 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 07:11:56,322 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 07:11:56,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 07:11:56,328 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 07:11:56,328 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 07:11:56,328 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 07:11:56,329 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 07:11:56,329 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 07:11:56,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 07:11:56,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 07:11:56,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 07:11:56,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:11:56,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 07:11:56,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 07:11:56,330 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 07:11:56,330 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 07:11:56,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 07:11:56,330 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 07:11:56,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 07:11:56,330 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 07:11:56,331 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 07:11:56,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2023-02-18 07:11:56,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 07:11:56,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 07:11:56,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 07:11:56,598 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 07:11:56,599 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 07:11:56,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2023-02-18 07:11:57,679 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 07:11:57,933 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 07:11:57,934 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2023-02-18 07:11:57,947 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec059d75d/3a9d8f075fc342b0a0f3e4dd2e1e4355/FLAGcce190997 [2023-02-18 07:11:57,961 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec059d75d/3a9d8f075fc342b0a0f3e4dd2e1e4355 [2023-02-18 07:11:57,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 07:11:57,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 07:11:57,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 07:11:57,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 07:11:57,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 07:11:57,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:11:57" (1/1) ... [2023-02-18 07:11:57,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336d332d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:57, skipping insertion in model container [2023-02-18 07:11:57,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:11:57" (1/1) ... [2023-02-18 07:11:57,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 07:11:58,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:11:58,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:11:58,354 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-18 07:11:58,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:11:58,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:11:58,404 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 07:11:58,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:11:58,471 INFO L208 MainTranslator]: Completed translation [2023-02-18 07:11:58,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58 WrapperNode [2023-02-18 07:11:58,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 07:11:58,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 07:11:58,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 07:11:58,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 07:11:58,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58" (1/1) ... [2023-02-18 07:11:58,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58" (1/1) ... [2023-02-18 07:11:58,503 INFO L138 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2023-02-18 07:11:58,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 07:11:58,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 07:11:58,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 07:11:58,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 07:11:58,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58" (1/1) ... [2023-02-18 07:11:58,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58" (1/1) ... [2023-02-18 07:11:58,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58" (1/1) ... [2023-02-18 07:11:58,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58" (1/1) ... [2023-02-18 07:11:58,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58" (1/1) ... [2023-02-18 07:11:58,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58" (1/1) ... [2023-02-18 07:11:58,552 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58" (1/1) ... [2023-02-18 07:11:58,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58" (1/1) ... [2023-02-18 07:11:58,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 07:11:58,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 07:11:58,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 07:11:58,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 07:11:58,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58" (1/1) ... [2023-02-18 07:11:58,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:11:58,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:11:58,592 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) [2023-02-18 07:11:58,606 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 [2023-02-18 07:11:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-02-18 07:11:58,620 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-02-18 07:11:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-02-18 07:11:58,621 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-02-18 07:11:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 07:11:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 07:11:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-18 07:11:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 07:11:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 07:11:58,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 07:11:58,622 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2023-02-18 07:11:58,749 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 07:11:58,750 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 07:11:58,933 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 07:11:58,938 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 07:11:58,938 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-18 07:11:58,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:11:58 BoogieIcfgContainer [2023-02-18 07:11:58,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 07:11:58,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 07:11:58,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 07:11:58,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 07:11:58,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 07:11:57" (1/3) ... [2023-02-18 07:11:58,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23175512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:11:58, skipping insertion in model container [2023-02-18 07:11:58,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:11:58" (2/3) ... [2023-02-18 07:11:58,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23175512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:11:58, skipping insertion in model container [2023-02-18 07:11:58,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:11:58" (3/3) ... [2023-02-18 07:11:58,946 INFO L112 eAbstractionObserver]: Analyzing ICFG fillarray1.i [2023-02-18 07:11:58,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 07:11:58,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-02-18 07:11:58,958 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-02-18 07:11:59,015 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-02-18 07:11:59,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 220 flow [2023-02-18 07:11:59,115 INFO L130 PetriNetUnfolder]: 8/109 cut-off events. [2023-02-18 07:11:59,116 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 07:11:59,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 109 events. 8/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2023-02-18 07:11:59,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 105 transitions, 220 flow [2023-02-18 07:11:59,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 103 transitions, 212 flow [2023-02-18 07:11:59,134 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-02-18 07:11:59,144 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 103 transitions, 212 flow [2023-02-18 07:11:59,147 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 103 transitions, 212 flow [2023-02-18 07:11:59,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 103 transitions, 212 flow [2023-02-18 07:11:59,172 INFO L130 PetriNetUnfolder]: 8/109 cut-off events. [2023-02-18 07:11:59,173 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 07:11:59,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 109 events. 8/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2023-02-18 07:11:59,176 INFO L119 LiptonReduction]: Number of co-enabled transitions 2546 [2023-02-18 07:11:59,339 INFO L134 LiptonReduction]: Checked pairs total: 7730 [2023-02-18 07:11:59,339 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-02-18 07:11:59,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 07:11:59,359 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;@728b6e27, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 07:11:59,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-02-18 07:11:59,363 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-02-18 07:11:59,363 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 07:11:59,364 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 07:11:59,364 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2023-02-18 07:11:59,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 07:11:59,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:59,369 INFO L85 PathProgramCache]: Analyzing trace with hash 400, now seen corresponding path program 1 times [2023-02-18 07:11:59,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:11:59,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015271599] [2023-02-18 07:11:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:59,383 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 [2023-02-18 07:11:59,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:11:59,386 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) [2023-02-18 07:11:59,387 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 [2023-02-18 07:11:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:59,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 07:11:59,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:11:59,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:11:59,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:11:59,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015271599] [2023-02-18 07:11:59,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015271599] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:11:59,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:11:59,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-02-18 07:11:59,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714097019] [2023-02-18 07:11:59,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:11:59,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 07:11:59,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:11:59,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 07:11:59,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 07:11:59,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 190 [2023-02-18 07:11:59,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 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) [2023-02-18 07:11:59,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 07:11:59,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 190 [2023-02-18 07:11:59,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 07:11:59,688 INFO L130 PetriNetUnfolder]: 569/1096 cut-off events. [2023-02-18 07:11:59,688 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-02-18 07:11:59,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 1096 events. 569/1096 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6245 event pairs, 476 based on Foata normal form. 95/890 useless extension candidates. Maximal degree in co-relation 1938. Up to 840 conditions per place. [2023-02-18 07:11:59,696 INFO L137 encePairwiseOnDemand]: 186/190 looper letters, 25 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2023-02-18 07:11:59,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 134 flow [2023-02-18 07:11:59,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 07:11:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-02-18 07:11:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 227 transitions. [2023-02-18 07:11:59,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5973684210526315 [2023-02-18 07:11:59,710 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 227 transitions. [2023-02-18 07:11:59,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 227 transitions. [2023-02-18 07:11:59,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 07:11:59,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 227 transitions. [2023-02-18 07:11:59,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 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) [2023-02-18 07:11:59,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:11:59,723 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:11:59,725 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 92 flow. Second operand 2 states and 227 transitions. [2023-02-18 07:11:59,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 134 flow [2023-02-18 07:11:59,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-18 07:11:59,728 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 82 flow [2023-02-18 07:11:59,729 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2023-02-18 07:11:59,731 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-02-18 07:11:59,732 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 82 flow [2023-02-18 07:11:59,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 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) [2023-02-18 07:11:59,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 07:11:59,732 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-02-18 07:11:59,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-02-18 07:11:59,936 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 [2023-02-18 07:11:59,937 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)] === [2023-02-18 07:11:59,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:11:59,938 INFO L85 PathProgramCache]: Analyzing trace with hash 12526, now seen corresponding path program 1 times [2023-02-18 07:11:59,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:11:59,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632353219] [2023-02-18 07:11:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:11:59,938 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 [2023-02-18 07:11:59,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:11:59,939 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) [2023-02-18 07:11:59,942 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 [2023-02-18 07:11:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:11:59,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 07:11:59,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:11:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:11:59,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:11:59,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:11:59,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632353219] [2023-02-18 07:11:59,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632353219] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:11:59,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:11:59,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 07:11:59,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174349643] [2023-02-18 07:11:59,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:11:59,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:11:59,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:11:59,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:11:59,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:12:00,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 190 [2023-02-18 07:12:00,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2023-02-18 07:12:00,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 07:12:00,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 190 [2023-02-18 07:12:00,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 07:12:00,197 INFO L130 PetriNetUnfolder]: 717/1315 cut-off events. [2023-02-18 07:12:00,197 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 07:12:00,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 1315 events. 717/1315 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7454 event pairs, 547 based on Foata normal form. 0/941 useless extension candidates. Maximal degree in co-relation 2406. Up to 957 conditions per place. [2023-02-18 07:12:00,203 INFO L137 encePairwiseOnDemand]: 187/190 looper letters, 37 selfloop transitions, 1 changer transitions 2/52 dead transitions. [2023-02-18 07:12:00,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 188 flow [2023-02-18 07:12:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:12:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 07:12:00,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-02-18 07:12:00,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5403508771929825 [2023-02-18 07:12:00,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-02-18 07:12:00,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-02-18 07:12:00,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 07:12:00,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-02-18 07:12:00,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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) [2023-02-18 07:12:00,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 07:12:00,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 07:12:00,209 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 82 flow. Second operand 3 states and 308 transitions. [2023-02-18 07:12:00,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 188 flow [2023-02-18 07:12:00,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-02-18 07:12:00,211 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 85 flow [2023-02-18 07:12:00,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-02-18 07:12:00,211 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2023-02-18 07:12:00,212 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 85 flow [2023-02-18 07:12:00,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2023-02-18 07:12:00,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 07:12:00,212 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-02-18 07:12:00,237 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 [2023-02-18 07:12:00,418 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 [2023-02-18 07:12:00,419 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 07:12:00,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:00,419 INFO L85 PathProgramCache]: Analyzing trace with hash 394584, now seen corresponding path program 1 times [2023-02-18 07:12:00,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:00,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855787042] [2023-02-18 07:12:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:00,420 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 [2023-02-18 07:12:00,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:00,421 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) [2023-02-18 07:12:00,421 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 [2023-02-18 07:12:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:00,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 07:12:00,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:00,551 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:00,552 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 60 [2023-02-18 07:12:00,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:12:00,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:00,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:00,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855787042] [2023-02-18 07:12:00,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855787042] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:00,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:00,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 07:12:00,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320960320] [2023-02-18 07:12:00,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:00,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:12:00,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:00,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:12:00,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:12:00,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 190 [2023-02-18 07:12:00,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2023-02-18 07:12:00,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 07:12:00,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 190 [2023-02-18 07:12:00,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 07:12:00,772 INFO L130 PetriNetUnfolder]: 621/1134 cut-off events. [2023-02-18 07:12:00,772 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-02-18 07:12:00,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2182 conditions, 1134 events. 621/1134 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6510 event pairs, 258 based on Foata normal form. 0/844 useless extension candidates. Maximal degree in co-relation 2177. Up to 477 conditions per place. [2023-02-18 07:12:00,777 INFO L137 encePairwiseOnDemand]: 187/190 looper letters, 34 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-02-18 07:12:00,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 179 flow [2023-02-18 07:12:00,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:12:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 07:12:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-02-18 07:12:00,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2023-02-18 07:12:00,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-02-18 07:12:00,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-02-18 07:12:00,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 07:12:00,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-02-18 07:12:00,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2023-02-18 07:12:00,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 07:12:00,782 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 07:12:00,782 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 85 flow. Second operand 3 states and 310 transitions. [2023-02-18 07:12:00,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 179 flow [2023-02-18 07:12:00,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 175 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-02-18 07:12:00,785 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 83 flow [2023-02-18 07:12:00,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-02-18 07:12:00,786 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-02-18 07:12:00,786 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 83 flow [2023-02-18 07:12:00,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2023-02-18 07:12:00,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 07:12:00,787 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-02-18 07:12:00,795 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 [2023-02-18 07:12:00,993 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 [2023-02-18 07:12:00,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 07:12:00,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:00,996 INFO L85 PathProgramCache]: Analyzing trace with hash 394583, now seen corresponding path program 1 times [2023-02-18 07:12:00,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:00,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876207740] [2023-02-18 07:12:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:00,997 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 [2023-02-18 07:12:00,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:00,998 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) [2023-02-18 07:12:01,000 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 [2023-02-18 07:12:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:01,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 07:12:01,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:01,056 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:01,056 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 60 [2023-02-18 07:12:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:12:01,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:01,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:01,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876207740] [2023-02-18 07:12:01,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876207740] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:01,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:01,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 07:12:01,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472093748] [2023-02-18 07:12:01,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:01,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:12:01,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:01,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:12:01,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:12:01,125 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 190 [2023-02-18 07:12:01,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2023-02-18 07:12:01,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 07:12:01,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 190 [2023-02-18 07:12:01,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 07:12:01,242 INFO L130 PetriNetUnfolder]: 543/1039 cut-off events. [2023-02-18 07:12:01,243 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-02-18 07:12:01,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1957 conditions, 1039 events. 543/1039 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5949 event pairs, 324 based on Foata normal form. 0/805 useless extension candidates. Maximal degree in co-relation 1953. Up to 577 conditions per place. [2023-02-18 07:12:01,247 INFO L137 encePairwiseOnDemand]: 187/190 looper letters, 32 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-02-18 07:12:01,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 173 flow [2023-02-18 07:12:01,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:12:01,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 07:12:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-02-18 07:12:01,250 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5561403508771929 [2023-02-18 07:12:01,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-02-18 07:12:01,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-02-18 07:12:01,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 07:12:01,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-02-18 07:12:01,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-02-18 07:12:01,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 07:12:01,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 07:12:01,252 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 83 flow. Second operand 3 states and 317 transitions. [2023-02-18 07:12:01,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 173 flow [2023-02-18 07:12:01,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 169 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-18 07:12:01,253 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 81 flow [2023-02-18 07:12:01,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-02-18 07:12:01,254 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2023-02-18 07:12:01,254 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 81 flow [2023-02-18 07:12:01,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2023-02-18 07:12:01,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 07:12:01,254 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 07:12:01,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-18 07:12:01,461 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 [2023-02-18 07:12:01,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 07:12:01,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:01,462 INFO L85 PathProgramCache]: Analyzing trace with hash 379205335, now seen corresponding path program 1 times [2023-02-18 07:12:01,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:01,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561121072] [2023-02-18 07:12:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:01,462 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 [2023-02-18 07:12:01,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:01,473 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) [2023-02-18 07:12:01,480 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 [2023-02-18 07:12:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:01,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 07:12:01,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:01,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:12:01,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:01,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:01,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561121072] [2023-02-18 07:12:01,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561121072] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:01,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:01,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 07:12:01,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051668922] [2023-02-18 07:12:01,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:01,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:12:01,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:01,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:12:01,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:12:01,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 190 [2023-02-18 07:12:01,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:12:01,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 07:12:01,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 190 [2023-02-18 07:12:01,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 07:12:01,613 INFO L130 PetriNetUnfolder]: 466/878 cut-off events. [2023-02-18 07:12:01,613 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-02-18 07:12:01,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 878 events. 466/878 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4769 event pairs, 395 based on Foata normal form. 0/653 useless extension candidates. Maximal degree in co-relation 1673. Up to 696 conditions per place. [2023-02-18 07:12:01,618 INFO L137 encePairwiseOnDemand]: 188/190 looper letters, 20 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-02-18 07:12:01,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 121 flow [2023-02-18 07:12:01,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:12:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 07:12:01,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-02-18 07:12:01,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5385964912280702 [2023-02-18 07:12:01,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-02-18 07:12:01,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-02-18 07:12:01,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 07:12:01,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-02-18 07:12:01,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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) [2023-02-18 07:12:01,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 07:12:01,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 07:12:01,623 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 81 flow. Second operand 3 states and 307 transitions. [2023-02-18 07:12:01,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 121 flow [2023-02-18 07:12:01,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 117 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-18 07:12:01,625 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 77 flow [2023-02-18 07:12:01,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-02-18 07:12:01,626 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-02-18 07:12:01,626 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 77 flow [2023-02-18 07:12:01,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:12:01,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 07:12:01,626 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 07:12:01,635 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 (6)] Forceful destruction successful, exit code 0 [2023-02-18 07:12:01,833 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 [2023-02-18 07:12:01,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 07:12:01,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:01,836 INFO L85 PathProgramCache]: Analyzing trace with hash 379205342, now seen corresponding path program 1 times [2023-02-18 07:12:01,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:01,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870201196] [2023-02-18 07:12:01,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:01,836 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 [2023-02-18 07:12:01,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:01,837 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) [2023-02-18 07:12:01,840 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 [2023-02-18 07:12:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:01,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 07:12:01,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:01,912 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 07:12:01,915 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:12:01,915 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 1 case distinctions, treesize of input 12 treesize of output 41 [2023-02-18 07:12:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:12:01,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:01,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:01,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870201196] [2023-02-18 07:12:01,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870201196] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:01,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:01,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 07:12:01,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345283315] [2023-02-18 07:12:01,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:01,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:12:01,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:01,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:12:01,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:12:02,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 190 [2023-02-18 07:12:02,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2023-02-18 07:12:02,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 07:12:02,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 190 [2023-02-18 07:12:02,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 07:12:02,170 INFO L130 PetriNetUnfolder]: 448/812 cut-off events. [2023-02-18 07:12:02,170 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 07:12:02,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 812 events. 448/812 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4311 event pairs, 165 based on Foata normal form. 0/657 useless extension candidates. Maximal degree in co-relation 1565. Up to 477 conditions per place. [2023-02-18 07:12:02,174 INFO L137 encePairwiseOnDemand]: 187/190 looper letters, 31 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-02-18 07:12:02,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 165 flow [2023-02-18 07:12:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:12:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 07:12:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2023-02-18 07:12:02,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5491228070175439 [2023-02-18 07:12:02,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2023-02-18 07:12:02,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2023-02-18 07:12:02,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 07:12:02,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2023-02-18 07:12:02,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2023-02-18 07:12:02,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 07:12:02,178 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 07:12:02,179 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 77 flow. Second operand 3 states and 313 transitions. [2023-02-18 07:12:02,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 165 flow [2023-02-18 07:12:02,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-02-18 07:12:02,180 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 78 flow [2023-02-18 07:12:02,180 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-02-18 07:12:02,182 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-02-18 07:12:02,182 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 78 flow [2023-02-18 07:12:02,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2023-02-18 07:12:02,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 07:12:02,185 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 07:12:02,194 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 [2023-02-18 07:12:02,393 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 [2023-02-18 07:12:02,393 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 07:12:02,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:02,393 INFO L85 PathProgramCache]: Analyzing trace with hash 379205336, now seen corresponding path program 1 times [2023-02-18 07:12:02,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:02,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003498126] [2023-02-18 07:12:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:02,394 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 [2023-02-18 07:12:02,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:02,395 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) [2023-02-18 07:12:02,398 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 [2023-02-18 07:12:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:02,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 07:12:02,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:02,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:12:02,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:02,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:02,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003498126] [2023-02-18 07:12:02,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003498126] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:02,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:02,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 07:12:02,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114186318] [2023-02-18 07:12:02,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:02,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:12:02,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:02,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:12:02,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:12:02,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 190 [2023-02-18 07:12:02,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:12:02,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 07:12:02,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 190 [2023-02-18 07:12:02,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 07:12:02,541 INFO L130 PetriNetUnfolder]: 300/580 cut-off events. [2023-02-18 07:12:02,542 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-02-18 07:12:02,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 580 events. 300/580 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2939 event pairs, 253 based on Foata normal form. 42/523 useless extension candidates. Maximal degree in co-relation 1138. Up to 458 conditions per place. [2023-02-18 07:12:02,544 INFO L137 encePairwiseOnDemand]: 188/190 looper letters, 18 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-02-18 07:12:02,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 114 flow [2023-02-18 07:12:02,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:12:02,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 07:12:02,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-02-18 07:12:02,546 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2023-02-18 07:12:02,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-02-18 07:12:02,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-02-18 07:12:02,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 07:12:02,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-02-18 07:12:02,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2023-02-18 07:12:02,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 07:12:02,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 07:12:02,548 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 78 flow. Second operand 3 states and 305 transitions. [2023-02-18 07:12:02,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 114 flow [2023-02-18 07:12:02,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-18 07:12:02,549 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 74 flow [2023-02-18 07:12:02,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-02-18 07:12:02,550 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2023-02-18 07:12:02,550 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 74 flow [2023-02-18 07:12:02,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:12:02,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 07:12:02,550 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:12:02,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-18 07:12:02,757 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 [2023-02-18 07:12:02,758 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 07:12:02,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:02,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1142827360, now seen corresponding path program 1 times [2023-02-18 07:12:02,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:02,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241653487] [2023-02-18 07:12:02,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:02,759 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 [2023-02-18 07:12:02,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:02,760 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) [2023-02-18 07:12:02,762 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 [2023-02-18 07:12:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:12:02,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 07:12:02,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:12:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:12:02,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:12:02,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:12:02,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241653487] [2023-02-18 07:12:02,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241653487] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:12:02,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:12:02,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:12:02,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146380996] [2023-02-18 07:12:02,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:12:02,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 07:12:02,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:12:02,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 07:12:02,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:12:04,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 07:12:07,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 07:12:09,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 07:12:11,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 07:12:13,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 07:12:15,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 07:12:15,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-02-18 07:12:15,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:12:15,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 07:12:15,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-02-18 07:12:15,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 07:12:18,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 07:12:18,828 INFO L130 PetriNetUnfolder]: 464/760 cut-off events. [2023-02-18 07:12:18,828 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 07:12:18,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 760 events. 464/760 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3586 event pairs, 62 based on Foata normal form. 0/637 useless extension candidates. Maximal degree in co-relation 1543. Up to 294 conditions per place. [2023-02-18 07:12:18,831 INFO L137 encePairwiseOnDemand]: 185/190 looper letters, 60 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-02-18 07:12:18,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 74 transitions, 284 flow [2023-02-18 07:12:18,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:12:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-02-18 07:12:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 521 transitions. [2023-02-18 07:12:18,837 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4570175438596491 [2023-02-18 07:12:18,837 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 521 transitions. [2023-02-18 07:12:18,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 521 transitions. [2023-02-18 07:12:18,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 07:12:18,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 521 transitions. [2023-02-18 07:12:18,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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) [2023-02-18 07:12:18,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 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) [2023-02-18 07:12:18,840 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 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) [2023-02-18 07:12:18,840 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 74 flow. Second operand 6 states and 521 transitions. [2023-02-18 07:12:18,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 74 transitions, 284 flow [2023-02-18 07:12:18,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 74 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-02-18 07:12:18,841 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 79 flow [2023-02-18 07:12:18,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-02-18 07:12:18,842 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-02-18 07:12:18,842 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 79 flow [2023-02-18 07:12:18,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 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) [2023-02-18 07:12:18,842 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 07:12:18,843 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:12:18,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-02-18 07:12:19,049 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 [2023-02-18 07:12:19,052 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 07:12:19,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:12:19,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1816875148, now seen corresponding path program 1 times [2023-02-18 07:12:19,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:12:19,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005782039] [2023-02-18 07:12:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:12:19,053 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 [2023-02-18 07:12:19,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:12:19,054 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) [2023-02-18 07:12:19,056 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 [2023-02-18 07:12:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 07:12:19,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 07:12:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 07:12:19,164 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-02-18 07:12:19,165 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-18 07:12:19,165 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2023-02-18 07:12:19,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2023-02-18 07:12:19,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-02-18 07:12:19,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2023-02-18 07:12:19,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-02-18 07:12:19,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-02-18 07:12:19,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 18 remaining) [2023-02-18 07:12:19,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 18 remaining) [2023-02-18 07:12:19,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 18 remaining) [2023-02-18 07:12:19,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-02-18 07:12:19,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-02-18 07:12:19,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-02-18 07:12:19,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-02-18 07:12:19,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-02-18 07:12:19,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2023-02-18 07:12:19,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2023-02-18 07:12:19,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2023-02-18 07:12:19,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2023-02-18 07:12:19,184 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 [2023-02-18 07:12:19,368 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 [2023-02-18 07:12:19,368 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:12:19,373 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-02-18 07:12:19,373 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 07:12:19,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 07:12:19 BasicIcfg [2023-02-18 07:12:19,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 07:12:19,406 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 07:12:19,406 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 07:12:19,406 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 07:12:19,407 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:11:58" (3/4) ... [2023-02-18 07:12:19,408 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-18 07:12:19,453 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 07:12:19,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 07:12:19,453 INFO L158 Benchmark]: Toolchain (without parser) took 21489.55ms. Allocated memory was 73.4MB in the beginning and 113.2MB in the end (delta: 39.8MB). Free memory was 48.5MB in the beginning and 47.7MB in the end (delta: 790.3kB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2023-02-18 07:12:19,453 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 07:12:19,453 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.16ms. Allocated memory is still 73.4MB. Free memory was 48.3MB in the beginning and 36.2MB in the end (delta: 12.1MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2023-02-18 07:12:19,454 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.11ms. Allocated memory is still 73.4MB. Free memory was 36.2MB in the beginning and 34.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 07:12:19,454 INFO L158 Benchmark]: Boogie Preprocessor took 51.38ms. Allocated memory is still 73.4MB. Free memory was 34.1MB in the beginning and 32.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 07:12:19,454 INFO L158 Benchmark]: RCFGBuilder took 379.68ms. Allocated memory is still 73.4MB. Free memory was 32.0MB in the beginning and 41.6MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 07:12:19,455 INFO L158 Benchmark]: TraceAbstraction took 20464.76ms. Allocated memory was 73.4MB in the beginning and 113.2MB in the end (delta: 39.8MB). Free memory was 40.7MB in the beginning and 50.9MB in the end (delta: -10.1MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2023-02-18 07:12:19,455 INFO L158 Benchmark]: Witness Printer took 46.58ms. Allocated memory is still 113.2MB. Free memory was 50.9MB in the beginning and 47.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 07:12:19,456 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 506.16ms. Allocated memory is still 73.4MB. Free memory was 48.3MB in the beginning and 36.2MB in the end (delta: 12.1MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.11ms. Allocated memory is still 73.4MB. Free memory was 36.2MB in the beginning and 34.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.38ms. Allocated memory is still 73.4MB. Free memory was 34.1MB in the beginning and 32.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 379.68ms. Allocated memory is still 73.4MB. Free memory was 32.0MB in the beginning and 41.6MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 20464.76ms. Allocated memory was 73.4MB in the beginning and 113.2MB in the end (delta: 39.8MB). Free memory was 40.7MB in the beginning and 50.9MB in the end (delta: -10.1MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. * Witness Printer took 46.58ms. Allocated memory is still 113.2MB. Free memory was 50.9MB in the beginning and 47.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 101 PlacesBefore, 43 PlacesAfterwards, 103 TransitionsBefore, 43 TransitionsAfterwards, 2546 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 85 TotalNumberOfCompositions, 7730 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2462, independent: 2218, independent conditional: 0, independent unconditional: 2218, dependent: 244, dependent conditional: 0, dependent unconditional: 244, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1057, independent: 1021, independent conditional: 0, independent unconditional: 1021, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2462, independent: 1197, independent conditional: 0, independent unconditional: 1197, dependent: 208, dependent conditional: 0, dependent unconditional: 208, unknown: 1057, unknown conditional: 0, unknown unconditional: 1057] , Statistics on independence cache: Total cache size (in pairs): 135, Positive cache size: 113, Positive conditional cache size: 0, Positive unconditional cache size: 113, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, 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; [L1040] 0 int x, y, z; [L1068] 0 size = __VERIFIER_nondet_int() [L1069] COND FALSE 0 !(size < 1 || size > 20) [L1072] 0 int *a = (int *)malloc(size); [L1073] 0 pthread_t id1, id2; [L1074] 0 ind = 0 [L1075] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [\old(argc)=5, a={2:0}, arg={2:0}, argc=5, argv={9:6}, argv={9:6}, i=1, id1={15:0}, id2={7:0}, ind=0, j=2, pthread_create(&id1, ((void *)0), t1, a)=0, size=2, x=0, y=0, z=0] [L1042] 1 x = 1 VAL [arg={2:0}, arg={2:0}, i=1, ind=0, j=2, size=2, x=1, y=0, z=0] [L1043] 1 y = 1 [L1044] 1 int *a = (int *)arg; VAL [a={2:0}, arg={2:0}, arg={2:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1045] COND FALSE 1 !(y == 1 && z) VAL [a={2:0}, arg={2:0}, arg={2:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1047] COND TRUE 1 ind < size - 1 VAL [a={2:0}, arg={2:0}, arg={2:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1048] 1 ++ind VAL [a={2:0}, arg={2:0}, arg={2:0}, i=1, ind=1, j=2, size=2, x=1, y=1, z=0] [L1049] 1 a[ind] = i - UnprovableResult [Line: 1067]: 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: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1075]: 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: 1076]: 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, 131 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: 20.3s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 12 mSolverCounterUnknown, 443 SdHoareTripleChecker+Valid, 16.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 256 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 16.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 761 IncrementalHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 41 mSDtfsCounter, 761 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=0, InterpolantAutomatonStates: 26, 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, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 24 ConstructedInterpolants, 11 QuantifiedInterpolants, 1020 SizeOfPredicates, 8 NumberOfNonLiveVariables, 529 ConjunctsInSsa, 46 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! [2023-02-18 07:12:19,481 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)