./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:12:50,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:12:50,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:12:50,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:12:50,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:12:50,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:12:50,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:12:50,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:12:50,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:12:50,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:12:50,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:12:50,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:12:50,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:12:50,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:12:50,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:12:50,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:12:50,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:12:50,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:12:50,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:12:50,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:12:50,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:12:50,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:12:50,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:12:50,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:12:50,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:12:50,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:12:50,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:12:50,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:12:50,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:12:50,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:12:50,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:12:50,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:12:50,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:12:50,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:12:50,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:12:50,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:12:50,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:12:50,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:12:50,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:12:50,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:12:50,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:12:50,887 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:12:50,919 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:12:50,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:12:50,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:12:50,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:12:50,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:12:50,921 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:12:50,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:12:50,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:12:50,922 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:12:50,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:12:50,923 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:12:50,923 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:12:50,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:12:50,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:12:50,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:12:50,924 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:12:50,924 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:12:50,924 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:12:50,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:12:50,925 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:12:50,925 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:12:50,925 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:12:50,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:12:50,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:12:50,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:12:50,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:12:50,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:12:50,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:12:50,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:12:50,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:12:50,927 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:12:50,927 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:12:50,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:12:50,927 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:12:50,928 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:12:51,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:12:51,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:12:51,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:12:51,260 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:12:51,260 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:12:51,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i [2023-09-01 00:12:52,445 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:12:52,679 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:12:52,680 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i [2023-09-01 00:12:52,700 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4fdddd08/5e91098c228644b599622e10f02aca12/FLAGe4db35c55 [2023-09-01 00:12:52,712 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4fdddd08/5e91098c228644b599622e10f02aca12 [2023-09-01 00:12:52,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:12:52,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:12:52,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:12:52,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:12:52,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:12:52,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:12:52" (1/1) ... [2023-09-01 00:12:52,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55cc380a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:52, skipping insertion in model container [2023-09-01 00:12:52,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:12:52" (1/1) ... [2023-09-01 00:12:52,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:12:52,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:12:53,178 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:53,179 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:53,179 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:53,180 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:53,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:12:53,236 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-09-01 00:12:53,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7a94025b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:53, skipping insertion in model container [2023-09-01 00:12:53,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:12:53,238 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-09-01 00:12:53,239 INFO L158 Benchmark]: Toolchain (without parser) took 524.33ms. Allocated memory is still 71.3MB. Free memory was 47.3MB in the beginning and 32.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 00:12:53,240 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 71.3MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:12:53,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.74ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 32.6MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 00:12:53,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 71.3MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.74ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 32.6MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1031]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:12:54,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:12:54,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:12:54,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:12:54,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:12:54,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:12:54,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:12:54,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:12:54,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:12:54,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:12:54,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:12:54,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:12:54,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:12:54,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:12:54,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:12:54,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:12:54,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:12:54,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:12:54,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:12:54,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:12:54,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:12:54,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:12:54,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:12:54,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:12:54,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:12:54,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:12:54,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:12:54,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:12:54,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:12:54,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:12:54,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:12:54,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:12:54,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:12:54,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:12:54,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:12:54,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:12:54,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:12:54,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:12:54,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:12:54,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:12:54,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:12:54,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-09-01 00:12:55,022 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:12:55,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:12:55,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:12:55,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:12:55,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:12:55,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:12:55,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:12:55,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:12:55,026 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:12:55,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:12:55,027 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:12:55,027 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:12:55,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:12:55,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:12:55,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:12:55,028 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:12:55,028 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:12:55,028 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:12:55,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:12:55,028 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:12:55,028 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 00:12:55,029 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 00:12:55,029 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:12:55,029 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:12:55,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:12:55,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:12:55,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:12:55,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:12:55,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:12:55,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:12:55,030 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 00:12:55,030 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 00:12:55,031 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:12:55,031 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:12:55,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:12:55,031 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 00:12:55,031 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:12:55,031 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:12:55,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:12:55,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:12:55,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:12:55,352 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:12:55,352 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:12:55,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i [2023-09-01 00:12:56,473 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:12:56,733 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:12:56,734 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i [2023-09-01 00:12:56,757 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c2fd3aa8/d3c5d65135a34ec8bf5342590c31e413/FLAGf427bb91c [2023-09-01 00:12:56,769 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c2fd3aa8/d3c5d65135a34ec8bf5342590c31e413 [2023-09-01 00:12:56,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:12:56,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:12:56,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:12:56,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:12:56,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:12:56,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:12:56" (1/1) ... [2023-09-01 00:12:56,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@185ab0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:56, skipping insertion in model container [2023-09-01 00:12:56,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:12:56" (1/1) ... [2023-09-01 00:12:56,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:12:56,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:12:57,258 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:57,259 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:57,259 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:57,260 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:57,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:12:57,314 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-09-01 00:12:57,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:12:57,349 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:57,351 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:57,351 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:57,352 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:57,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:12:57,381 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:12:57,415 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:57,416 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:57,416 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:57,416 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 00:12:57,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:12:57,522 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:12:57,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:57 WrapperNode [2023-09-01 00:12:57,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:12:57,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:12:57,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:12:57,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:12:57,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:57" (1/1) ... [2023-09-01 00:12:57,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:57" (1/1) ... [2023-09-01 00:12:57,588 INFO L138 Inliner]: procedures = 274, calls = 32, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2023-09-01 00:12:57,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:12:57,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:12:57,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:12:57,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:12:57,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:57" (1/1) ... [2023-09-01 00:12:57,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:57" (1/1) ... [2023-09-01 00:12:57,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:57" (1/1) ... [2023-09-01 00:12:57,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:57" (1/1) ... [2023-09-01 00:12:57,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:57" (1/1) ... [2023-09-01 00:12:57,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:57" (1/1) ... [2023-09-01 00:12:57,639 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:57" (1/1) ... [2023-09-01 00:12:57,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:57" (1/1) ... [2023-09-01 00:12:57,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:12:57,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:12:57,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:12:57,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:12:57,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:57" (1/1) ... [2023-09-01 00:12:57,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:12:57,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:12:57,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 00:12:57,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 00:12:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 00:12:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-09-01 00:12:57,726 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-09-01 00:12:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:12:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 00:12:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:12:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 00:12:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:12:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 00:12:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:12:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 00:12:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:12:57,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:12:57,729 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:12:57,949 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:12:57,952 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:12:58,357 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:12:58,363 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:12:58,363 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 00:12:58,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:12:58 BoogieIcfgContainer [2023-09-01 00:12:58,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:12:58,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:12:58,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:12:58,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:12:58,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:12:56" (1/3) ... [2023-09-01 00:12:58,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7a6aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:12:58, skipping insertion in model container [2023-09-01 00:12:58,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:12:57" (2/3) ... [2023-09-01 00:12:58,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7a6aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:12:58, skipping insertion in model container [2023-09-01 00:12:58,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:12:58" (3/3) ... [2023-09-01 00:12:58,372 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2023-09-01 00:12:58,385 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:12:58,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2023-09-01 00:12:58,386 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:12:58,484 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:12:58,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 204 transitions, 418 flow [2023-09-01 00:12:58,585 INFO L130 PetriNetUnfolder]: 14/202 cut-off events. [2023-09-01 00:12:58,586 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:12:58,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 202 events. 14/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 634 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2023-09-01 00:12:58,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 204 transitions, 418 flow [2023-09-01 00:12:58,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 202 transitions, 410 flow [2023-09-01 00:12:58,606 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:12:58,616 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 202 transitions, 410 flow [2023-09-01 00:12:58,619 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 202 transitions, 410 flow [2023-09-01 00:12:58,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 202 transitions, 410 flow [2023-09-01 00:12:58,654 INFO L130 PetriNetUnfolder]: 14/202 cut-off events. [2023-09-01 00:12:58,655 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:12:58,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 202 events. 14/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 638 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2023-09-01 00:12:58,660 INFO L119 LiptonReduction]: Number of co-enabled transitions 7680 [2023-09-01 00:16:55,715 WARN L222 SmtUtils]: Spent 2.42m on a formula simplification. DAG size of input: 224 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:18:11,524 WARN L222 SmtUtils]: Spent 1.26m on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:20:38,751 WARN L222 SmtUtils]: Spent 2.45m on a formula simplification. DAG size of input: 224 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:21:38,778 WARN L222 SmtUtils]: Spent 1.00m on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:22:05,045 WARN L222 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 165 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:22:45,300 INFO L134 LiptonReduction]: Checked pairs total: 13073 [2023-09-01 00:22:45,300 INFO L136 LiptonReduction]: Total number of compositions: 259 [2023-09-01 00:22:45,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 00:22:45,316 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;@23429c17, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:22:45,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2023-09-01 00:22:45,318 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-09-01 00:22:45,318 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:22:45,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:22:45,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 00:22:45,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-09-01 00:22:45,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:22:45,323 INFO L85 PathProgramCache]: Analyzing trace with hash 23001, now seen corresponding path program 1 times [2023-09-01 00:22:45,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:22:45,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723290481] [2023-09-01 00:22:45,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:22:45,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:22:45,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:22:45,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:22:45,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-09-01 00:22:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:22:45,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2023-09-01 00:22:45,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:22:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:22:45,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:22:45,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:22:45,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723290481] [2023-09-01 00:22:45,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723290481] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:22:45,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:22:45,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:22:45,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633795022] [2023-09-01 00:22:45,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:22:45,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:22:45,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:22:45,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:22:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:22:45,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-09-01 00:22:45,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:45,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:22:45,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-09-01 00:22:45,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:22:47,665 INFO L130 PetriNetUnfolder]: 1548/2409 cut-off events. [2023-09-01 00:22:47,665 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-09-01 00:22:47,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4852 conditions, 2409 events. 1548/2409 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11327 event pairs, 1313 based on Foata normal form. 0/1122 useless extension candidates. Maximal degree in co-relation 4796. Up to 2400 conditions per place. [2023-09-01 00:22:47,687 INFO L137 encePairwiseOnDemand]: 443/463 looper letters, 60 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-09-01 00:22:47,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 254 flow [2023-09-01 00:22:47,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:22:47,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:22:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2023-09-01 00:22:47,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773218142548596 [2023-09-01 00:22:47,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2023-09-01 00:22:47,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2023-09-01 00:22:47,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:22:47,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2023-09-01 00:22:47,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:47,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:47,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:47,722 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 140 flow. Second operand 3 states and 663 transitions. [2023-09-01 00:22:47,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 254 flow [2023-09-01 00:22:47,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:22:47,728 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 124 flow [2023-09-01 00:22:47,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2023-09-01 00:22:47,733 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2023-09-01 00:22:47,734 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 124 flow [2023-09-01 00:22:47,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:47,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:22:47,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 00:22:47,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-09-01 00:22:47,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:22:47,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-09-01 00:22:47,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:22:47,947 INFO L85 PathProgramCache]: Analyzing trace with hash 23029, now seen corresponding path program 1 times [2023-09-01 00:22:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:22:47,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756118100] [2023-09-01 00:22:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:22:47,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:22:47,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:22:47,949 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:22:47,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-09-01 00:22:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:22:48,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 00:22:48,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:22:48,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:22:48,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:22:48,102 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-09-01 00:22:48,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2023-09-01 00:22:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:22:48,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:22:48,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:22:48,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756118100] [2023-09-01 00:22:48,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756118100] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:22:48,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:22:48,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:22:48,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931362870] [2023-09-01 00:22:48,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:22:48,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:22:48,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:22:48,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:22:48,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:22:48,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-09-01 00:22:48,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:48,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:22:48,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-09-01 00:22:48,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:22:49,721 INFO L130 PetriNetUnfolder]: 1488/2314 cut-off events. [2023-09-01 00:22:49,721 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:22:49,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 2314 events. 1488/2314 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11902 event pairs, 249 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 4642. Up to 1822 conditions per place. [2023-09-01 00:22:49,731 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 77 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-09-01 00:22:49,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 79 transitions, 334 flow [2023-09-01 00:22:49,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:22:49,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:22:49,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2023-09-01 00:22:49,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46940244780417567 [2023-09-01 00:22:49,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2023-09-01 00:22:49,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2023-09-01 00:22:49,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:22:49,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2023-09-01 00:22:49,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:49,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:49,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:49,742 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 124 flow. Second operand 3 states and 652 transitions. [2023-09-01 00:22:49,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 79 transitions, 334 flow [2023-09-01 00:22:49,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 79 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:22:49,744 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 128 flow [2023-09-01 00:22:49,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-09-01 00:22:49,745 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2023-09-01 00:22:49,745 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 128 flow [2023-09-01 00:22:49,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:49,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:22:49,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 00:22:49,755 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 [2023-09-01 00:22:49,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:22:49,957 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-09-01 00:22:49,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:22:49,958 INFO L85 PathProgramCache]: Analyzing trace with hash 23030, now seen corresponding path program 1 times [2023-09-01 00:22:49,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:22:49,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282280473] [2023-09-01 00:22:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:22:49,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:22:49,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:22:49,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:22:49,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-09-01 00:22:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:22:50,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 00:22:50,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:22:50,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:22:50,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:22:50,079 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:22:50,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2023-09-01 00:22:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:22:50,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:22:50,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:22:50,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282280473] [2023-09-01 00:22:50,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282280473] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:22:50,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:22:50,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:22:50,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886110159] [2023-09-01 00:22:50,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:22:50,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:22:50,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:22:50,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:22:50,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:22:50,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 463 [2023-09-01 00:22:50,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:50,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:22:50,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 463 [2023-09-01 00:22:50,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:22:51,681 INFO L130 PetriNetUnfolder]: 1491/2316 cut-off events. [2023-09-01 00:22:51,681 INFO L131 PetriNetUnfolder]: For 231/231 co-relation queries the response was YES. [2023-09-01 00:22:51,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5095 conditions, 2316 events. 1491/2316 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10877 event pairs, 1257 based on Foata normal form. 0/1170 useless extension candidates. Maximal degree in co-relation 5038. Up to 2315 conditions per place. [2023-09-01 00:22:51,692 INFO L137 encePairwiseOnDemand]: 455/463 looper letters, 51 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2023-09-01 00:22:51,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 252 flow [2023-09-01 00:22:51,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:22:51,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:22:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-09-01 00:22:51,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478041756659467 [2023-09-01 00:22:51,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-09-01 00:22:51,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-09-01 00:22:51,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:22:51,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-09-01 00:22:51,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:51,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:51,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:51,705 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 128 flow. Second operand 3 states and 622 transitions. [2023-09-01 00:22:51,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 252 flow [2023-09-01 00:22:51,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:22:51,712 INFO L231 Difference]: Finished difference. Result has 55 places, 55 transitions, 163 flow [2023-09-01 00:22:51,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2023-09-01 00:22:51,713 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2023-09-01 00:22:51,713 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 163 flow [2023-09-01 00:22:51,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:51,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:22:51,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:22:51,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-09-01 00:22:51,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:22:51,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-09-01 00:22:51,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:22:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash 715196, now seen corresponding path program 1 times [2023-09-01 00:22:51,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:22:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193314313] [2023-09-01 00:22:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:22:51,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:22:51,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:22:51,928 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:22:51,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-09-01 00:22:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:22:52,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2023-09-01 00:22:52,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:22:52,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2023-09-01 00:22:52,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:22:52,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:22:52,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:22:52,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193314313] [2023-09-01 00:22:52,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193314313] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:22:52,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:22:52,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:22:52,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524342182] [2023-09-01 00:22:52,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:22:52,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 00:22:52,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:22:52,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 00:22:52,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 00:22:52,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 463 [2023-09-01 00:22:52,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:52,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:22:52,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 463 [2023-09-01 00:22:52,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:22:54,827 INFO L130 PetriNetUnfolder]: 1490/2319 cut-off events. [2023-09-01 00:22:54,827 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-09-01 00:22:54,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4954 conditions, 2319 events. 1490/2319 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10871 event pairs, 1257 based on Foata normal form. 0/1173 useless extension candidates. Maximal degree in co-relation 4913. Up to 2313 conditions per place. [2023-09-01 00:22:54,837 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 51 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-09-01 00:22:54,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 290 flow [2023-09-01 00:22:54,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 00:22:54,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 00:22:54,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 759 transitions. [2023-09-01 00:22:54,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40982721382289417 [2023-09-01 00:22:54,841 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 759 transitions. [2023-09-01 00:22:54,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 759 transitions. [2023-09-01 00:22:54,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:22:54,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 759 transitions. [2023-09-01 00:22:54,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:54,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:54,848 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:54,848 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 163 flow. Second operand 4 states and 759 transitions. [2023-09-01 00:22:54,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 290 flow [2023-09-01 00:22:54,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:22:54,851 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 188 flow [2023-09-01 00:22:54,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-09-01 00:22:54,853 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-09-01 00:22:54,853 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 188 flow [2023-09-01 00:22:54,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:54,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:22:54,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:22:54,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-09-01 00:22:55,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:22:55,064 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-09-01 00:22:55,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:22:55,065 INFO L85 PathProgramCache]: Analyzing trace with hash 715195, now seen corresponding path program 1 times [2023-09-01 00:22:55,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:22:55,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221373463] [2023-09-01 00:22:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:22:55,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:22:55,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:22:55,066 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:22:55,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-09-01 00:22:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:22:55,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjunts are in the unsatisfiable core [2023-09-01 00:22:55,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:22:55,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-09-01 00:22:55,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-09-01 00:22:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:22:55,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:22:55,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:22:55,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221373463] [2023-09-01 00:22:55,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221373463] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:22:55,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:22:55,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:22:55,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258629059] [2023-09-01 00:22:55,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:22:55,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 00:22:55,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:22:55,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 00:22:55,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 00:22:55,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-09-01 00:22:55,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:55,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:22:55,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-09-01 00:22:55,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:22:57,694 INFO L130 PetriNetUnfolder]: 1490/2318 cut-off events. [2023-09-01 00:22:57,695 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-09-01 00:22:57,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4966 conditions, 2318 events. 1490/2318 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10888 event pairs, 1257 based on Foata normal form. 1/1178 useless extension candidates. Maximal degree in co-relation 4886. Up to 2312 conditions per place. [2023-09-01 00:22:57,705 INFO L137 encePairwiseOnDemand]: 458/463 looper letters, 55 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-09-01 00:22:57,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 329 flow [2023-09-01 00:22:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 00:22:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 00:22:57,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 759 transitions. [2023-09-01 00:22:57,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40982721382289417 [2023-09-01 00:22:57,709 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 759 transitions. [2023-09-01 00:22:57,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 759 transitions. [2023-09-01 00:22:57,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:22:57,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 759 transitions. [2023-09-01 00:22:57,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:57,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:57,715 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:57,715 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 188 flow. Second operand 4 states and 759 transitions. [2023-09-01 00:22:57,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 329 flow [2023-09-01 00:22:57,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:22:57,720 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 196 flow [2023-09-01 00:22:57,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-09-01 00:22:57,722 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2023-09-01 00:22:57,722 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 196 flow [2023-09-01 00:22:57,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:57,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:22:57,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 00:22:57,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-09-01 00:22:57,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:22:57,937 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-09-01 00:22:57,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:22:57,938 INFO L85 PathProgramCache]: Analyzing trace with hash 22168903, now seen corresponding path program 1 times [2023-09-01 00:22:57,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:22:57,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787636083] [2023-09-01 00:22:57,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:22:57,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:22:57,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:22:57,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:22:57,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-09-01 00:22:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:22:58,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2023-09-01 00:22:58,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:22:58,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:22:58,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:22:58,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:22:58,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787636083] [2023-09-01 00:22:58,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787636083] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:22:58,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:22:58,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:22:58,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951660450] [2023-09-01 00:22:58,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:22:58,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:22:58,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:22:58,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:22:58,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:22:58,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-09-01 00:22:58,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:58,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:22:58,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-09-01 00:22:58,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:22:59,393 INFO L130 PetriNetUnfolder]: 1488/2316 cut-off events. [2023-09-01 00:22:59,393 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-09-01 00:22:59,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4960 conditions, 2316 events. 1488/2316 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10867 event pairs, 1257 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 4917. Up to 2313 conditions per place. [2023-09-01 00:22:59,407 INFO L137 encePairwiseOnDemand]: 460/463 looper letters, 52 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-09-01 00:22:59,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 300 flow [2023-09-01 00:22:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:22:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:22:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-09-01 00:22:59,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44924406047516197 [2023-09-01 00:22:59,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-09-01 00:22:59,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-09-01 00:22:59,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:22:59,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-09-01 00:22:59,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:59,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:59,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:59,418 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 196 flow. Second operand 3 states and 624 transitions. [2023-09-01 00:22:59,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 300 flow [2023-09-01 00:22:59,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 56 transitions, 292 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 00:22:59,422 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 180 flow [2023-09-01 00:22:59,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-09-01 00:22:59,424 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-09-01 00:22:59,424 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 180 flow [2023-09-01 00:22:59,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:22:59,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:22:59,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 00:22:59,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-09-01 00:22:59,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:22:59,633 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-09-01 00:22:59,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:22:59,634 INFO L85 PathProgramCache]: Analyzing trace with hash 22171597, now seen corresponding path program 1 times [2023-09-01 00:22:59,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:22:59,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207884742] [2023-09-01 00:22:59,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:22:59,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:22:59,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:22:59,635 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:22:59,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-09-01 00:22:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:22:59,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 44 conjunts are in the unsatisfiable core [2023-09-01 00:23:00,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:23:02,684 INFO L321 Elim1Store]: treesize reduction 324, result has 30.9 percent of original size [2023-09-01 00:23:02,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 442 treesize of output 633 [2023-09-01 00:23:09,196 WARN L222 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 117 DAG size of output: 54 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-09-01 00:23:09,197 INFO L321 Elim1Store]: treesize reduction 324, result has 30.9 percent of original size [2023-09-01 00:23:09,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 442 treesize of output 633 [2023-09-01 00:23:09,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-09-01 00:23:09,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-09-01 00:23:10,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-09-01 00:23:10,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-09-01 00:23:10,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-09-01 00:23:10,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2023-09-01 00:23:11,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-09-01 00:23:11,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-09-01 00:23:11,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-09-01 00:23:11,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-09-01 00:23:19,662 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:23:19,683 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:23:19,775 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:23:19,792 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:23:19,859 INFO L217 Elim1Store]: Index analysis took 242 ms [2023-09-01 00:23:20,109 INFO L321 Elim1Store]: treesize reduction 242, result has 8.0 percent of original size [2023-09-01 00:23:20,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 244 treesize of output 420 [2023-09-01 00:23:20,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-09-01 00:23:20,722 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:23:20,727 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:23:20,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 259 [2023-09-01 00:23:20,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-09-01 00:23:21,136 INFO L217 Elim1Store]: Index analysis took 183 ms [2023-09-01 00:23:21,248 INFO L321 Elim1Store]: treesize reduction 125, result has 12.0 percent of original size [2023-09-01 00:23:21,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 15 case distinctions, treesize of input 159 treesize of output 259 [2023-09-01 00:23:21,902 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:23:21,937 INFO L217 Elim1Store]: Index analysis took 128 ms [2023-09-01 00:23:22,040 INFO L321 Elim1Store]: treesize reduction 216, result has 7.3 percent of original size [2023-09-01 00:23:22,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 318 treesize of output 317 [2023-09-01 00:23:22,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-09-01 00:23:22,953 INFO L321 Elim1Store]: treesize reduction 47, result has 26.6 percent of original size [2023-09-01 00:23:22,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 79 treesize of output 56 [2023-09-01 00:23:23,177 INFO L321 Elim1Store]: treesize reduction 110, result has 6.8 percent of original size [2023-09-01 00:23:23,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 100 treesize of output 37 [2023-09-01 00:23:23,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:23:23,311 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-09-01 00:23:23,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 24 [2023-09-01 00:23:23,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-09-01 00:23:23,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 220 [2023-09-01 00:23:23,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:23:23,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:23:24,112 INFO L321 Elim1Store]: treesize reduction 343, result has 12.9 percent of original size [2023-09-01 00:23:24,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 683 treesize of output 882 [2023-09-01 00:23:24,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 274 [2023-09-01 00:23:24,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 274 treesize of output 272 [2023-09-01 00:23:24,916 INFO L321 Elim1Store]: treesize reduction 67, result has 23.9 percent of original size [2023-09-01 00:23:24,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 986 treesize of output 913 [2023-09-01 00:23:24,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 337 treesize of output 335 [2023-09-01 00:23:25,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 335 treesize of output 333 [2023-09-01 00:23:25,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:23:25,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:23:25,763 INFO L321 Elim1Store]: treesize reduction 264, result has 16.2 percent of original size [2023-09-01 00:23:25,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 411947 treesize of output 412005 [2023-09-01 00:23:26,117 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-09-01 00:23:26,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 145 treesize of output 16 [2023-09-01 00:23:26,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 115 [2023-09-01 00:23:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:23:27,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:23:27,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:23:27,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207884742] [2023-09-01 00:23:27,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207884742] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:23:27,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:23:27,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:23:27,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269373338] [2023-09-01 00:23:27,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:23:27,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 00:23:27,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:23:27,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 00:23:27,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 00:23:28,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 463 [2023-09-01 00:23:28,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:28,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:23:28,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 463 [2023-09-01 00:23:28,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:23:30,261 INFO L130 PetriNetUnfolder]: 1488/2314 cut-off events. [2023-09-01 00:23:30,261 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-09-01 00:23:30,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 2314 events. 1488/2314 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10852 event pairs, 1257 based on Foata normal form. 0/1175 useless extension candidates. Maximal degree in co-relation 4897. Up to 2310 conditions per place. [2023-09-01 00:23:30,274 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 52 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-09-01 00:23:30,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 302 flow [2023-09-01 00:23:30,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 00:23:30,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 00:23:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 729 transitions. [2023-09-01 00:23:30,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936285097192225 [2023-09-01 00:23:30,278 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 729 transitions. [2023-09-01 00:23:30,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 729 transitions. [2023-09-01 00:23:30,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:23:30,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 729 transitions. [2023-09-01 00:23:30,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 182.25) internal successors, (729), 4 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:30,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:30,283 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:30,283 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 180 flow. Second operand 4 states and 729 transitions. [2023-09-01 00:23:30,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 302 flow [2023-09-01 00:23:30,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:23:30,286 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 192 flow [2023-09-01 00:23:30,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-09-01 00:23:30,287 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2023-09-01 00:23:30,287 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 192 flow [2023-09-01 00:23:30,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:30,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:23:30,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 00:23:30,305 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 [2023-09-01 00:23:30,505 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 [2023-09-01 00:23:30,505 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-09-01 00:23:30,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:23:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash 22171596, now seen corresponding path program 1 times [2023-09-01 00:23:30,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:23:30,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441155102] [2023-09-01 00:23:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:23:30,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:23:30,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:23:30,508 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) [2023-09-01 00:23:30,510 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 [2023-09-01 00:23:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:23:30,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 00:23:30,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:23:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:23:30,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:23:30,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:23:30,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441155102] [2023-09-01 00:23:30,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441155102] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:23:30,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:23:30,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:23:30,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903964037] [2023-09-01 00:23:30,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:23:30,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 00:23:30,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:23:30,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 00:23:30,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 00:23:31,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 463 [2023-09-01 00:23:31,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:31,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:23:31,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 463 [2023-09-01 00:23:31,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:23:33,054 INFO L130 PetriNetUnfolder]: 1488/2313 cut-off events. [2023-09-01 00:23:33,054 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-09-01 00:23:33,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4955 conditions, 2313 events. 1488/2313 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10820 event pairs, 1257 based on Foata normal form. 1/1176 useless extension candidates. Maximal degree in co-relation 4921. Up to 2310 conditions per place. [2023-09-01 00:23:33,064 INFO L137 encePairwiseOnDemand]: 460/463 looper letters, 53 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-09-01 00:23:33,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 301 flow [2023-09-01 00:23:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:23:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:23:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2023-09-01 00:23:33,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43628509719222464 [2023-09-01 00:23:33,068 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2023-09-01 00:23:33,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2023-09-01 00:23:33,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:23:33,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2023-09-01 00:23:33,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:33,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:33,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:33,072 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 192 flow. Second operand 3 states and 606 transitions. [2023-09-01 00:23:33,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 301 flow [2023-09-01 00:23:33,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:23:33,074 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 185 flow [2023-09-01 00:23:33,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-09-01 00:23:33,075 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2023-09-01 00:23:33,075 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 185 flow [2023-09-01 00:23:33,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:33,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:23:33,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 00:23:33,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-09-01 00:23:33,280 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 [2023-09-01 00:23:33,281 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-09-01 00:23:33,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:23:33,281 INFO L85 PathProgramCache]: Analyzing trace with hash 687317365, now seen corresponding path program 1 times [2023-09-01 00:23:33,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:23:33,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192630541] [2023-09-01 00:23:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:23:33,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:23:33,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:23:33,282 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) [2023-09-01 00:23:33,283 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 [2023-09-01 00:23:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:23:33,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 00:23:33,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:23:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:23:33,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 00:23:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:23:33,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:23:33,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192630541] [2023-09-01 00:23:33,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192630541] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 00:23:33,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 00:23:33,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-09-01 00:23:33,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671098407] [2023-09-01 00:23:33,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 00:23:33,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 00:23:33,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:23:33,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 00:23:33,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 00:23:33,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 463 [2023-09-01 00:23:33,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:33,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:23:33,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 463 [2023-09-01 00:23:33,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:23:38,845 INFO L130 PetriNetUnfolder]: 1491/2328 cut-off events. [2023-09-01 00:23:38,845 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-09-01 00:23:38,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5018 conditions, 2328 events. 1491/2328 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10912 event pairs, 1257 based on Foata normal form. 6/1193 useless extension candidates. Maximal degree in co-relation 4972. Up to 2307 conditions per place. [2023-09-01 00:23:38,851 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 58 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2023-09-01 00:23:38,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 68 transitions, 411 flow [2023-09-01 00:23:38,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 00:23:38,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 00:23:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1202 transitions. [2023-09-01 00:23:38,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326853851691865 [2023-09-01 00:23:38,856 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1202 transitions. [2023-09-01 00:23:38,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1202 transitions. [2023-09-01 00:23:38,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:23:38,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1202 transitions. [2023-09-01 00:23:38,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:38,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:38,863 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:38,864 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 185 flow. Second operand 6 states and 1202 transitions. [2023-09-01 00:23:38,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 68 transitions, 411 flow [2023-09-01 00:23:38,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 407 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:23:38,866 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 275 flow [2023-09-01 00:23:38,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2023-09-01 00:23:38,867 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-09-01 00:23:38,867 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 275 flow [2023-09-01 00:23:38,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:38,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:23:38,868 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 00:23:38,881 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 [2023-09-01 00:23:39,079 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 [2023-09-01 00:23:39,080 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-09-01 00:23:39,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:23:39,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1843323079, now seen corresponding path program 2 times [2023-09-01 00:23:39,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:23:39,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894252591] [2023-09-01 00:23:39,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 00:23:39,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:23:39,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:23:39,082 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:23:39,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-09-01 00:23:39,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 00:23:39,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 00:23:39,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 00:23:39,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:23:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:23:39,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 00:23:39,770 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:23:39,770 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:23:39,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894252591] [2023-09-01 00:23:39,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894252591] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 00:23:39,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 00:23:39,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-09-01 00:23:39,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066618252] [2023-09-01 00:23:39,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 00:23:39,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 00:23:39,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:23:39,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 00:23:39,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-09-01 00:23:39,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 463 [2023-09-01 00:23:39,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 275 flow. Second operand has 12 states, 12 states have (on average 190.16666666666666) internal successors, (2282), 12 states have internal predecessors, (2282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:39,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:23:39,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 463 [2023-09-01 00:23:39,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:23:46,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:23:48,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:23:49,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:23:51,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:23:59,686 INFO L130 PetriNetUnfolder]: 1491/2358 cut-off events. [2023-09-01 00:23:59,686 INFO L131 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2023-09-01 00:23:59,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5236 conditions, 2358 events. 1491/2358 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11232 event pairs, 1257 based on Foata normal form. 12/1223 useless extension candidates. Maximal degree in co-relation 4955. Up to 2307 conditions per place. [2023-09-01 00:23:59,694 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 76 selfloop transitions, 16 changer transitions 0/92 dead transitions. [2023-09-01 00:23:59,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 92 transitions, 767 flow [2023-09-01 00:23:59,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 00:23:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 00:23:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2363 transitions. [2023-09-01 00:23:59,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42530597552195826 [2023-09-01 00:23:59,704 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2363 transitions. [2023-09-01 00:23:59,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2363 transitions. [2023-09-01 00:23:59,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:23:59,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2363 transitions. [2023-09-01 00:23:59,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:59,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:59,717 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:59,717 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 275 flow. Second operand 12 states and 2363 transitions. [2023-09-01 00:23:59,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 92 transitions, 767 flow [2023-09-01 00:23:59,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 92 transitions, 763 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:23:59,721 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 436 flow [2023-09-01 00:23:59,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=436, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2023-09-01 00:23:59,721 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 17 predicate places. [2023-09-01 00:23:59,721 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 436 flow [2023-09-01 00:23:59,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 190.16666666666666) internal successors, (2282), 12 states have internal predecessors, (2282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:23:59,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:23:59,723 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-09-01 00:23:59,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-09-01 00:23:59,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:23:59,942 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-09-01 00:23:59,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:23:59,942 INFO L85 PathProgramCache]: Analyzing trace with hash 509313543, now seen corresponding path program 3 times [2023-09-01 00:23:59,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:23:59,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903719076] [2023-09-01 00:23:59,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 00:23:59,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:23:59,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:23:59,944 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:23:59,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-09-01 00:24:05,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-09-01 00:24:05,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 00:24:05,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 00:24:05,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:24:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:24:05,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 00:24:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:24:05,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:24:05,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903719076] [2023-09-01 00:24:05,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903719076] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 00:24:05,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 00:24:05,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-09-01 00:24:05,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613799705] [2023-09-01 00:24:05,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 00:24:05,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 00:24:05,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:24:05,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 00:24:05,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-09-01 00:24:06,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 463 [2023-09-01 00:24:06,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 436 flow. Second operand has 24 states, 24 states have (on average 190.08333333333334) internal successors, (4562), 24 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:24:06,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:24:06,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 463 [2023-09-01 00:24:06,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:24:14,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:24:19,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:24:21,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:24:26,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:24:27,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:24:33,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:24:35,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:24:36,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:24:39,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:24:41,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:24:49,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:24:51,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:24:52,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:24:53,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:25:02,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:25:04,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:25:08,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:25:11,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:25:19,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:25:21,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:25:24,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:25:27,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:25:33,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:25:35,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:25:41,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:26:02,777 INFO L130 PetriNetUnfolder]: 1491/2418 cut-off events. [2023-09-01 00:26:02,778 INFO L131 PetriNetUnfolder]: For 1455/1455 co-relation queries the response was YES. [2023-09-01 00:26:02,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5759 conditions, 2418 events. 1491/2418 cut-off events. For 1455/1455 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11651 event pairs, 1257 based on Foata normal form. 24/1283 useless extension candidates. Maximal degree in co-relation 5114. Up to 2307 conditions per place. [2023-09-01 00:26:02,786 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 112 selfloop transitions, 28 changer transitions 0/140 dead transitions. [2023-09-01 00:26:02,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 140 transitions, 1622 flow [2023-09-01 00:26:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-09-01 00:26:02,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-09-01 00:26:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4685 transitions. [2023-09-01 00:26:02,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216162706983441 [2023-09-01 00:26:02,800 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4685 transitions. [2023-09-01 00:26:02,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4685 transitions. [2023-09-01 00:26:02,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:26:02,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4685 transitions. [2023-09-01 00:26:02,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 195.20833333333334) internal successors, (4685), 24 states have internal predecessors, (4685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:02,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 463.0) internal successors, (11575), 25 states have internal predecessors, (11575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:02,823 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 463.0) internal successors, (11575), 25 states have internal predecessors, (11575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:02,823 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 436 flow. Second operand 24 states and 4685 transitions. [2023-09-01 00:26:02,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 140 transitions, 1622 flow [2023-09-01 00:26:02,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 140 transitions, 1528 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-09-01 00:26:02,830 INFO L231 Difference]: Finished difference. Result has 117 places, 84 transitions, 699 flow [2023-09-01 00:26:02,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=699, PETRI_PLACES=117, PETRI_TRANSITIONS=84} [2023-09-01 00:26:02,831 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 49 predicate places. [2023-09-01 00:26:02,831 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 84 transitions, 699 flow [2023-09-01 00:26:02,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 190.08333333333334) internal successors, (4562), 24 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:02,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:02,833 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1] [2023-09-01 00:26:02,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-09-01 00:26:03,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:26:03,053 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-09-01 00:26:03,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:03,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1694430343, now seen corresponding path program 4 times [2023-09-01 00:26:03,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:26:03,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38528160] [2023-09-01 00:26:03,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 00:26:03,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:26:03,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:26:03,055 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 00:26:03,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-09-01 00:26:13,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 00:26:13,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 00:26:13,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 3643 conjuncts, 24 conjunts are in the unsatisfiable core [2023-09-01 00:26:13,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:26:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:26:13,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 00:26:14,933 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:26:14,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:26:14,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38528160] [2023-09-01 00:26:14,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38528160] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 00:26:14,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 00:26:14,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-09-01 00:26:14,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399195853] [2023-09-01 00:26:14,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 00:26:14,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-09-01 00:26:14,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:26:14,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-09-01 00:26:14,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=1754, Unknown=0, NotChecked=0, Total=2256 [2023-09-01 00:26:17,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 463 [2023-09-01 00:26:17,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 84 transitions, 699 flow. Second operand has 48 states, 48 states have (on average 190.04166666666666) internal successors, (9122), 48 states have internal predecessors, (9122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:26:17,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:26:17,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 463 [2023-09-01 00:26:17,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:26:20,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:26:21,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:26:22,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:26:24,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:26:26,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:26:27,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:26:29,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:26:34,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:26:36,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:26:41,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:26:49,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:26:55,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:26:58,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:27:01,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:27:04,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:27:05,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:27:06,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:27:09,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15