./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 01:06:54,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 01:06:54,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 01:06:54,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 01:06:54,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 01:06:54,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 01:06:54,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 01:06:54,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 01:06:54,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 01:06:54,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 01:06:54,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 01:06:54,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 01:06:54,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 01:06:54,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 01:06:54,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 01:06:54,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 01:06:54,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 01:06:54,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 01:06:54,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 01:06:54,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 01:06:54,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 01:06:54,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 01:06:54,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 01:06:54,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 01:06:54,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 01:06:54,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 01:06:54,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 01:06:54,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 01:06:54,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 01:06:54,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 01:06:54,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 01:06:54,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 01:06:54,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 01:06:54,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 01:06:54,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 01:06:54,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 01:06:54,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 01:06:54,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 01:06:54,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 01:06:54,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 01:06:54,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 01:06:54,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 01:06:54,180 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 01:06:54,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 01:06:54,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 01:06:54,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 01:06:54,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 01:06:54,183 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 01:06:54,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 01:06:54,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 01:06:54,184 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 01:06:54,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 01:06:54,185 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 01:06:54,185 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 01:06:54,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 01:06:54,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 01:06:54,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 01:06:54,185 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 01:06:54,185 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 01:06:54,186 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 01:06:54,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 01:06:54,186 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 01:06:54,186 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 01:06:54,186 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 01:06:54,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 01:06:54,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 01:06:54,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 01:06:54,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:06:54,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 01:06:54,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 01:06:54,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 01:06:54,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 01:06:54,188 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 01:06:54,188 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 01:06:54,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 01:06:54,188 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 01:06:54,188 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 01:06:54,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 01:06:54,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 01:06:54,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 01:06:54,463 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 01:06:54,463 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 01:06:54,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-08-30 01:06:55,348 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 01:06:55,508 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 01:06:55,508 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-08-30 01:06:55,512 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626f24381/e81f5f7fe4454f1e8102e63ec4ec770c/FLAG3eb8ff033 [2023-08-30 01:06:55,897 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626f24381/e81f5f7fe4454f1e8102e63ec4ec770c [2023-08-30 01:06:55,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 01:06:55,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 01:06:55,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 01:06:55,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 01:06:55,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 01:06:55,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:06:55" (1/1) ... [2023-08-30 01:06:55,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444c216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:55, skipping insertion in model container [2023-08-30 01:06:55,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:06:55" (1/1) ... [2023-08-30 01:06:55,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 01:06:55,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 01:06:56,037 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2023-08-30 01:06:56,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:06:56,064 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-30 01:06:56,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3c27855c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:56, skipping insertion in model container [2023-08-30 01:06:56,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 01:06:56,067 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 01:06:56,069 INFO L158 Benchmark]: Toolchain (without parser) took 168.16ms. Allocated memory is still 77.6MB. Free memory was 55.9MB in the beginning and 45.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 01:06:56,069 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 58.7MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 57.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 01:06:56,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.65ms. Allocated memory is still 77.6MB. Free memory was 55.9MB in the beginning and 45.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 01:06:56,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 58.7MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 57.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 166.65ms. Allocated memory is still 77.6MB. Free memory was 55.9MB in the beginning and 45.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 123]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 01:06:57,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 01:06:57,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 01:06:57,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 01:06:57,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 01:06:57,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 01:06:57,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 01:06:57,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 01:06:57,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 01:06:57,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 01:06:57,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 01:06:57,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 01:06:57,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 01:06:57,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 01:06:57,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 01:06:57,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 01:06:57,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 01:06:57,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 01:06:57,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 01:06:57,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 01:06:57,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 01:06:57,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 01:06:57,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 01:06:57,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 01:06:57,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 01:06:57,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 01:06:57,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 01:06:57,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 01:06:57,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 01:06:57,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 01:06:57,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 01:06:57,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 01:06:57,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 01:06:57,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 01:06:57,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 01:06:57,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 01:06:57,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 01:06:57,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 01:06:57,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 01:06:57,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 01:06:57,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 01:06:57,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 01:06:57,519 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 01:06:57,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 01:06:57,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 01:06:57,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 01:06:57,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 01:06:57,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 01:06:57,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 01:06:57,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 01:06:57,521 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 01:06:57,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 01:06:57,522 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 01:06:57,522 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 01:06:57,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 01:06:57,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 01:06:57,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 01:06:57,523 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 01:06:57,523 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 01:06:57,523 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 01:06:57,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 01:06:57,523 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 01:06:57,524 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 01:06:57,524 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 01:06:57,524 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 01:06:57,524 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 01:06:57,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 01:06:57,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 01:06:57,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 01:06:57,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:06:57,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 01:06:57,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 01:06:57,525 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 01:06:57,525 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 01:06:57,525 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 01:06:57,526 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 01:06:57,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 01:06:57,526 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 01:06:57,526 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 01:06:57,526 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 01:06:57,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 01:06:57,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 01:06:57,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 01:06:57,766 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 01:06:57,766 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 01:06:57,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-08-30 01:06:58,725 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 01:06:58,867 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 01:06:58,868 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-08-30 01:06:58,872 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb59cc8e9/ffa310a0c5af475fbf82215a98676783/FLAG6dbe5413c [2023-08-30 01:06:58,882 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb59cc8e9/ffa310a0c5af475fbf82215a98676783 [2023-08-30 01:06:58,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 01:06:58,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 01:06:58,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 01:06:58,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 01:06:58,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 01:06:58,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:06:58" (1/1) ... [2023-08-30 01:06:58,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2b7f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:58, skipping insertion in model container [2023-08-30 01:06:58,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:06:58" (1/1) ... [2023-08-30 01:06:58,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 01:06:58,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 01:06:59,018 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2023-08-30 01:06:59,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:06:59,034 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 01:06:59,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 01:06:59,047 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2023-08-30 01:06:59,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:06:59,055 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 01:06:59,075 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2023-08-30 01:06:59,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:06:59,086 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 01:06:59,086 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 01:06:59,090 INFO L208 MainTranslator]: Completed translation [2023-08-30 01:06:59,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:59 WrapperNode [2023-08-30 01:06:59,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 01:06:59,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 01:06:59,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 01:06:59,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 01:06:59,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:59" (1/1) ... [2023-08-30 01:06:59,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:59" (1/1) ... [2023-08-30 01:06:59,124 INFO L138 Inliner]: procedures = 28, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 229 [2023-08-30 01:06:59,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 01:06:59,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 01:06:59,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 01:06:59,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 01:06:59,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:59" (1/1) ... [2023-08-30 01:06:59,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:59" (1/1) ... [2023-08-30 01:06:59,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:59" (1/1) ... [2023-08-30 01:06:59,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:59" (1/1) ... [2023-08-30 01:06:59,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:59" (1/1) ... [2023-08-30 01:06:59,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:59" (1/1) ... [2023-08-30 01:06:59,157 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:59" (1/1) ... [2023-08-30 01:06:59,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:59" (1/1) ... [2023-08-30 01:06:59,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 01:06:59,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 01:06:59,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 01:06:59,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 01:06:59,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:59" (1/1) ... [2023-08-30 01:06:59,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:06:59,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:06:59,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 01:06:59,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 01:06:59,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 01:06:59,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 01:06:59,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 01:06:59,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 01:06:59,249 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 01:06:59,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 01:06:59,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 01:06:59,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 01:06:59,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 01:06:59,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 01:06:59,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 01:06:59,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 01:06:59,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 01:06:59,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 01:06:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 01:06:59,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 01:06:59,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 01:06:59,252 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 01:06:59,332 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 01:06:59,333 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 01:06:59,875 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 01:06:59,948 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 01:06:59,948 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 01:06:59,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:06:59 BoogieIcfgContainer [2023-08-30 01:06:59,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 01:06:59,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 01:06:59,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 01:06:59,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 01:06:59,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:06:58" (1/3) ... [2023-08-30 01:06:59,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c25300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:06:59, skipping insertion in model container [2023-08-30 01:06:59,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:06:59" (2/3) ... [2023-08-30 01:06:59,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c25300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:06:59, skipping insertion in model container [2023-08-30 01:06:59,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:06:59" (3/3) ... [2023-08-30 01:06:59,955 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2023-08-30 01:06:59,966 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 01:06:59,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2023-08-30 01:06:59,966 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 01:07:00,039 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 01:07:00,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 326 transitions, 676 flow [2023-08-30 01:07:00,167 INFO L130 PetriNetUnfolder]: 27/323 cut-off events. [2023-08-30 01:07:00,167 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 01:07:00,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 323 events. 27/323 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 428 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 252. Up to 3 conditions per place. [2023-08-30 01:07:00,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 326 transitions, 676 flow [2023-08-30 01:07:00,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 319 transitions, 656 flow [2023-08-30 01:07:00,182 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 01:07:00,195 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 302 places, 319 transitions, 656 flow [2023-08-30 01:07:00,197 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 302 places, 319 transitions, 656 flow [2023-08-30 01:07:00,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 319 transitions, 656 flow [2023-08-30 01:07:00,237 INFO L130 PetriNetUnfolder]: 27/319 cut-off events. [2023-08-30 01:07:00,238 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 01:07:00,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 319 events. 27/319 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 434 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 252. Up to 3 conditions per place. [2023-08-30 01:07:00,241 INFO L119 LiptonReduction]: Number of co-enabled transitions 5194 [2023-08-30 01:07:38,927 INFO L134 LiptonReduction]: Checked pairs total: 9038 [2023-08-30 01:07:38,928 INFO L136 LiptonReduction]: Total number of compositions: 375 [2023-08-30 01:07:38,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 01:07:38,941 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;@4afc175a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 01:07:38,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2023-08-30 01:07:38,943 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 01:07:38,943 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:07:38,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:07:38,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 01:07:38,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-08-30 01:07:38,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:07:38,947 INFO L85 PathProgramCache]: Analyzing trace with hash 42350, now seen corresponding path program 1 times [2023-08-30 01:07:38,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:07:38,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950578192] [2023-08-30 01:07:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:07:38,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:07:38,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:07:38,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:07:38,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-30 01:07:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:07:39,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 01:07:39,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:07:39,224 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-08-30 01:07:39,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2023-08-30 01:07:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:07:39,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:07:39,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:07:39,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950578192] [2023-08-30 01:07:39,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950578192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:07:39,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:07:39,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:07:39,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223834623] [2023-08-30 01:07:39,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:07:39,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:07:39,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:07:39,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:07:39,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:07:39,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 701 [2023-08-30 01:07:39,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:39,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:07:39,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 701 [2023-08-30 01:07:39,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:07:41,073 INFO L130 PetriNetUnfolder]: 9900/12210 cut-off events. [2023-08-30 01:07:41,074 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2023-08-30 01:07:41,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24567 conditions, 12210 events. 9900/12210 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 53948 event pairs, 4614 based on Foata normal form. 0/3120 useless extension candidates. Maximal degree in co-relation 22321. Up to 12128 conditions per place. [2023-08-30 01:07:41,130 INFO L137 encePairwiseOnDemand]: 686/701 looper letters, 64 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2023-08-30 01:07:41,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 72 transitions, 296 flow [2023-08-30 01:07:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:07:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:07:41,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 913 transitions. [2023-08-30 01:07:41,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43414170233000476 [2023-08-30 01:07:41,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 913 transitions. [2023-08-30 01:07:41,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 913 transitions. [2023-08-30 01:07:41,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:07:41,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 913 transitions. [2023-08-30 01:07:41,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:41,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:41,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:41,164 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 178 flow. Second operand 3 states and 913 transitions. [2023-08-30 01:07:41,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 72 transitions, 296 flow [2023-08-30 01:07:41,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 284 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 01:07:41,172 INFO L231 Difference]: Finished difference. Result has 67 places, 71 transitions, 163 flow [2023-08-30 01:07:41,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=701, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=67, PETRI_TRANSITIONS=71} [2023-08-30 01:07:41,179 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -14 predicate places. [2023-08-30 01:07:41,179 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 71 transitions, 163 flow [2023-08-30 01:07:41,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:41,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:07:41,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 01:07:41,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-08-30 01:07:41,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:07:41,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-08-30 01:07:41,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:07:41,388 INFO L85 PathProgramCache]: Analyzing trace with hash 42349, now seen corresponding path program 1 times [2023-08-30 01:07:41,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:07:41,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215125302] [2023-08-30 01:07:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:07:41,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:07:41,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:07:41,393 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:07:41,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-30 01:07:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:07:41,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 01:07:41,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:07:41,489 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 01:07:41,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 01:07:41,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:07:41,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:07:41,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:07:41,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215125302] [2023-08-30 01:07:41,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215125302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:07:41,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:07:41,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:07:41,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843260864] [2023-08-30 01:07:41,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:07:41,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:07:41,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:07:41,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:07:41,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:07:41,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 701 [2023-08-30 01:07:41,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 71 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:41,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:07:41,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 701 [2023-08-30 01:07:41,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:07:42,733 INFO L130 PetriNetUnfolder]: 9900/12206 cut-off events. [2023-08-30 01:07:42,734 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 01:07:42,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24424 conditions, 12206 events. 9900/12206 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 53927 event pairs, 4614 based on Foata normal form. 2/3122 useless extension candidates. Maximal degree in co-relation 24400. Up to 12125 conditions per place. [2023-08-30 01:07:42,792 INFO L137 encePairwiseOnDemand]: 697/701 looper letters, 62 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-08-30 01:07:42,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 68 transitions, 283 flow [2023-08-30 01:07:42,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:07:42,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:07:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 898 transitions. [2023-08-30 01:07:42,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270090347123157 [2023-08-30 01:07:42,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 898 transitions. [2023-08-30 01:07:42,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 898 transitions. [2023-08-30 01:07:42,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:07:42,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 898 transitions. [2023-08-30 01:07:42,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:42,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:42,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:42,802 INFO L175 Difference]: Start difference. First operand has 67 places, 71 transitions, 163 flow. Second operand 3 states and 898 transitions. [2023-08-30 01:07:42,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 68 transitions, 283 flow [2023-08-30 01:07:42,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 68 transitions, 278 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 01:07:42,804 INFO L231 Difference]: Finished difference. Result has 65 places, 68 transitions, 154 flow [2023-08-30 01:07:42,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=701, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=65, PETRI_TRANSITIONS=68} [2023-08-30 01:07:42,805 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -16 predicate places. [2023-08-30 01:07:42,805 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 68 transitions, 154 flow [2023-08-30 01:07:42,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:42,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:07:42,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:07:42,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-30 01:07:43,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:07:43,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-08-30 01:07:43,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:07:43,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1317318, now seen corresponding path program 1 times [2023-08-30 01:07:43,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:07:43,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099466467] [2023-08-30 01:07:43,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:07:43,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:07:43,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:07:43,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:07:43,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-30 01:07:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:07:43,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 01:07:43,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:07:43,183 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-08-30 01:07:43,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2023-08-30 01:07:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:07:43,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:07:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:07:43,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:07:43,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099466467] [2023-08-30 01:07:43,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099466467] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:07:43,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:07:43,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 01:07:43,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959257358] [2023-08-30 01:07:43,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:07:43,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 01:07:43,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:07:43,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 01:07:43,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 01:07:44,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 701 [2023-08-30 01:07:44,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:44,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:07:44,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 701 [2023-08-30 01:07:44,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:07:45,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:07:47,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:07:50,473 INFO L130 PetriNetUnfolder]: 29713/36628 cut-off events. [2023-08-30 01:07:50,473 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-30 01:07:50,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73272 conditions, 36628 events. 29713/36628 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 2618. Compared 181270 event pairs, 13842 based on Foata normal form. 0/9798 useless extension candidates. Maximal degree in co-relation 73264. Up to 12131 conditions per place. [2023-08-30 01:07:50,638 INFO L137 encePairwiseOnDemand]: 685/701 looper letters, 164 selfloop transitions, 35 changer transitions 0/204 dead transitions. [2023-08-30 01:07:50,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 204 transitions, 848 flow [2023-08-30 01:07:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 01:07:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 01:07:50,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1788 transitions. [2023-08-30 01:07:50,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42510699001426533 [2023-08-30 01:07:50,644 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1788 transitions. [2023-08-30 01:07:50,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1788 transitions. [2023-08-30 01:07:50,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:07:50,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1788 transitions. [2023-08-30 01:07:50,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 298.0) internal successors, (1788), 6 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:50,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 701.0) internal successors, (4907), 7 states have internal predecessors, (4907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:50,657 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 701.0) internal successors, (4907), 7 states have internal predecessors, (4907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:50,657 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 154 flow. Second operand 6 states and 1788 transitions. [2023-08-30 01:07:50,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 204 transitions, 848 flow [2023-08-30 01:07:50,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 204 transitions, 847 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:07:50,662 INFO L231 Difference]: Finished difference. Result has 74 places, 100 transitions, 427 flow [2023-08-30 01:07:50,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=701, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=74, PETRI_TRANSITIONS=100} [2023-08-30 01:07:50,663 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -7 predicate places. [2023-08-30 01:07:50,663 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 100 transitions, 427 flow [2023-08-30 01:07:50,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:50,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:07:50,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 01:07:50,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-30 01:07:50,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:07:50,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-08-30 01:07:50,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:07:50,875 INFO L85 PathProgramCache]: Analyzing trace with hash 40874337, now seen corresponding path program 1 times [2023-08-30 01:07:50,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:07:50,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470324026] [2023-08-30 01:07:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:07:50,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:07:50,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:07:50,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:07:50,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-30 01:07:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:07:50,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 01:07:50,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:07:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:07:50,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:07:50,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:07:50,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470324026] [2023-08-30 01:07:50,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470324026] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:07:50,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:07:50,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:07:50,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041767846] [2023-08-30 01:07:50,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:07:50,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:07:50,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:07:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:07:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:07:51,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 701 [2023-08-30 01:07:51,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 100 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:51,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:07:51,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 701 [2023-08-30 01:07:51,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:07:53,796 INFO L130 PetriNetUnfolder]: 29712/36627 cut-off events. [2023-08-30 01:07:53,797 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-08-30 01:07:53,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73400 conditions, 36627 events. 29712/36627 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 3053. Compared 183085 event pairs, 13842 based on Foata normal form. 1/9379 useless extension candidates. Maximal degree in co-relation 73386. Up to 36384 conditions per place. [2023-08-30 01:07:53,961 INFO L137 encePairwiseOnDemand]: 698/701 looper letters, 92 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-30 01:07:53,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 99 transitions, 611 flow [2023-08-30 01:07:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:07:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:07:53,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 906 transitions. [2023-08-30 01:07:53,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43081312410841655 [2023-08-30 01:07:53,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 906 transitions. [2023-08-30 01:07:53,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 906 transitions. [2023-08-30 01:07:53,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:07:53,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 906 transitions. [2023-08-30 01:07:53,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:53,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:53,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:53,970 INFO L175 Difference]: Start difference. First operand has 74 places, 100 transitions, 427 flow. Second operand 3 states and 906 transitions. [2023-08-30 01:07:53,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 99 transitions, 611 flow [2023-08-30 01:07:53,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 599 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-30 01:07:53,972 INFO L231 Difference]: Finished difference. Result has 76 places, 99 transitions, 415 flow [2023-08-30 01:07:53,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=701, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=415, PETRI_PLACES=76, PETRI_TRANSITIONS=99} [2023-08-30 01:07:53,973 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -5 predicate places. [2023-08-30 01:07:53,973 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 99 transitions, 415 flow [2023-08-30 01:07:53,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:53,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:07:53,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:07:53,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-30 01:07:54,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:07:54,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-08-30 01:07:54,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:07:54,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1266118544, now seen corresponding path program 1 times [2023-08-30 01:07:54,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:07:54,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483213709] [2023-08-30 01:07:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:07:54,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:07:54,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:07:54,186 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:07:54,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-30 01:07:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:07:54,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 01:07:54,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:07:54,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:07:54,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:07:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:07:54,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:07:54,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483213709] [2023-08-30 01:07:54,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483213709] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:07:54,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:07:54,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-08-30 01:07:54,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709502550] [2023-08-30 01:07:54,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:07:54,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 01:07:54,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:07:54,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 01:07:54,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-30 01:07:54,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 701 [2023-08-30 01:07:54,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 99 transitions, 415 flow. Second operand has 8 states, 8 states have (on average 274.125) internal successors, (2193), 8 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:07:54,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:07:54,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 701 [2023-08-30 01:07:54,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:08:00,095 INFO L130 PetriNetUnfolder]: 49514/61037 cut-off events. [2023-08-30 01:08:00,096 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-08-30 01:08:00,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122285 conditions, 61037 events. 49514/61037 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 4670. Compared 320135 event pairs, 23070 based on Foata normal form. 4/16500 useless extension candidates. Maximal degree in co-relation 122269. Up to 36377 conditions per place. [2023-08-30 01:08:00,355 INFO L137 encePairwiseOnDemand]: 685/701 looper letters, 187 selfloop transitions, 31 changer transitions 0/223 dead transitions. [2023-08-30 01:08:00,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 223 transitions, 1247 flow [2023-08-30 01:08:00,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 01:08:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 01:08:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2392 transitions. [2023-08-30 01:08:00,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42653352353780316 [2023-08-30 01:08:00,361 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2392 transitions. [2023-08-30 01:08:00,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2392 transitions. [2023-08-30 01:08:00,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:08:00,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2392 transitions. [2023-08-30 01:08:00,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:08:00,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 701.0) internal successors, (6309), 9 states have internal predecessors, (6309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:08:00,372 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 701.0) internal successors, (6309), 9 states have internal predecessors, (6309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:08:00,372 INFO L175 Difference]: Start difference. First operand has 76 places, 99 transitions, 415 flow. Second operand 8 states and 2392 transitions. [2023-08-30 01:08:00,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 223 transitions, 1247 flow [2023-08-30 01:08:00,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 223 transitions, 1243 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:08:00,376 INFO L231 Difference]: Finished difference. Result has 86 places, 119 transitions, 713 flow [2023-08-30 01:08:00,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=701, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=713, PETRI_PLACES=86, PETRI_TRANSITIONS=119} [2023-08-30 01:08:00,377 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 5 predicate places. [2023-08-30 01:08:00,377 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 119 transitions, 713 flow [2023-08-30 01:08:00,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.125) internal successors, (2193), 8 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:08:00,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:08:00,378 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 01:08:00,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-30 01:08:00,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:08:00,584 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-08-30 01:08:00,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:08:00,585 INFO L85 PathProgramCache]: Analyzing trace with hash 593951598, now seen corresponding path program 2 times [2023-08-30 01:08:00,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:08:00,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107512607] [2023-08-30 01:08:00,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 01:08:00,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:08:00,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:08:00,586 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:08:00,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-30 01:08:00,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 01:08:00,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:08:00,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 01:08:00,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:08:00,738 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-08-30 01:08:00,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2023-08-30 01:08:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:08:00,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:08:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:08:01,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:08:01,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107512607] [2023-08-30 01:08:01,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107512607] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:08:01,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:08:01,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 01:08:01,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874240576] [2023-08-30 01:08:01,221 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:08:01,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 01:08:01,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:08:01,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 01:08:01,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-30 01:08:07,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 701 [2023-08-30 01:08:07,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 119 transitions, 713 flow. Second operand has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:08:07,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:08:07,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 701 [2023-08-30 01:08:07,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:08:10,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:12,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:13,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:15,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:16,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:18,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:20,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:21,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:23,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:25,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:27,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:29,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:30,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:32,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:33,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:35,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 01:08:52,509 INFO L130 PetriNetUnfolder]: 128680/158617 cut-off events. [2023-08-30 01:08:52,509 INFO L131 PetriNetUnfolder]: For 332/332 co-relation queries the response was YES. [2023-08-30 01:08:52,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317754 conditions, 158617 events. 128680/158617 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 8338. Compared 889108 event pairs, 59982 based on Foata normal form. 14/42996 useless extension candidates. Maximal degree in co-relation 317733. Up to 24235 conditions per place. [2023-08-30 01:08:53,386 INFO L137 encePairwiseOnDemand]: 685/701 looper letters, 524 selfloop transitions, 85 changer transitions 0/614 dead transitions. [2023-08-30 01:08:53,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 614 transitions, 3403 flow [2023-08-30 01:08:53,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 01:08:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 01:08:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5391 transitions. [2023-08-30 01:08:53,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.427246790299572 [2023-08-30 01:08:53,399 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5391 transitions. [2023-08-30 01:08:53,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5391 transitions. [2023-08-30 01:08:53,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:08:53,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5391 transitions. [2023-08-30 01:08:53,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 299.5) internal successors, (5391), 18 states have internal predecessors, (5391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:08:53,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 701.0) internal successors, (13319), 19 states have internal predecessors, (13319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:08:53,421 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 701.0) internal successors, (13319), 19 states have internal predecessors, (13319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:08:53,421 INFO L175 Difference]: Start difference. First operand has 86 places, 119 transitions, 713 flow. Second operand 18 states and 5391 transitions. [2023-08-30 01:08:53,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 614 transitions, 3403 flow [2023-08-30 01:08:53,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 614 transitions, 3403 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 01:08:53,429 INFO L231 Difference]: Finished difference. Result has 113 places, 170 transitions, 1338 flow [2023-08-30 01:08:53,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=701, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1338, PETRI_PLACES=113, PETRI_TRANSITIONS=170} [2023-08-30 01:08:53,430 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 32 predicate places. [2023-08-30 01:08:53,430 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 170 transitions, 1338 flow [2023-08-30 01:08:53,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:08:53,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:08:53,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:08:53,441 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 (7)] Ended with exit code 0 [2023-08-30 01:08:53,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:08:53,638 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-08-30 01:08:53,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:08:53,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1263115871, now seen corresponding path program 1 times [2023-08-30 01:08:53,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:08:53,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129901877] [2023-08-30 01:08:53,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:08:53,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:08:53,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:08:53,640 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:08:53,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-30 01:08:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:08:53,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 01:08:53,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:08:53,837 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-08-30 01:08:53,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2023-08-30 01:08:53,922 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 01:08:53,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 01:08:54,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 01:08:54,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 01:08:54,052 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 01:08:54,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 01:08:54,097 INFO L321 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-08-30 01:08:54,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 01:08:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 01:08:54,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:08:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 01:08:58,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:08:58,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129901877] [2023-08-30 01:08:58,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129901877] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:08:58,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:08:58,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 01:08:58,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279882862] [2023-08-30 01:08:58,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:08:58,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 01:08:58,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:08:58,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 01:08:58,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-30 01:09:03,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 701 [2023-08-30 01:09:03,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 170 transitions, 1338 flow. Second operand has 10 states, 10 states have (on average 250.4) internal successors, (2504), 10 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:09:03,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:09:03,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 701 [2023-08-30 01:09:03,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:09:16,517 WARN L222 SmtUtils]: Spent 7.53s on a formula simplification. DAG size of input: 44 DAG size of output: 43 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 01:09:18,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 01:09:22,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 01:09:24,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 01:09:26,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 01:09:29,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 01:09:31,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 01:09:33,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 01:09:35,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 01:09:37,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 01:09:39,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 01:10:14,502 INFO L130 PetriNetUnfolder]: 237548/292786 cut-off events. [2023-08-30 01:10:14,503 INFO L131 PetriNetUnfolder]: For 734/734 co-relation queries the response was YES. [2023-08-30 01:10:15,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586788 conditions, 292786 events. 237548/292786 cut-off events. For 734/734 co-relation queries the response was YES. Maximal size of possible extension queue 12212. Compared 1729958 event pairs, 110736 based on Foata normal form. 3/79912 useless extension candidates. Maximal degree in co-relation 586755. Up to 72684 conditions per place. [2023-08-30 01:10:16,665 INFO L137 encePairwiseOnDemand]: 685/701 looper letters, 467 selfloop transitions, 153 changer transitions 0/625 dead transitions. [2023-08-30 01:10:16,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 625 transitions, 4270 flow [2023-08-30 01:10:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 01:10:16,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 01:10:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5766 transitions. [2023-08-30 01:10:16,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39168534746280825 [2023-08-30 01:10:16,678 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5766 transitions. [2023-08-30 01:10:16,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5766 transitions. [2023-08-30 01:10:16,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:10:16,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5766 transitions. [2023-08-30 01:10:16,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 274.57142857142856) internal successors, (5766), 21 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:10:16,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 701.0) internal successors, (15422), 22 states have internal predecessors, (15422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:10:16,700 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 701.0) internal successors, (15422), 22 states have internal predecessors, (15422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:10:16,701 INFO L175 Difference]: Start difference. First operand has 113 places, 170 transitions, 1338 flow. Second operand 21 states and 5766 transitions. [2023-08-30 01:10:16,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 625 transitions, 4270 flow [2023-08-30 01:10:16,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 625 transitions, 4049 flow, removed 29 selfloop flow, removed 4 redundant places. [2023-08-30 01:10:16,714 INFO L231 Difference]: Finished difference. Result has 137 places, 239 transitions, 2290 flow [2023-08-30 01:10:16,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=701, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2290, PETRI_PLACES=137, PETRI_TRANSITIONS=239} [2023-08-30 01:10:16,715 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 56 predicate places. [2023-08-30 01:10:16,715 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 239 transitions, 2290 flow [2023-08-30 01:10:16,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 250.4) internal successors, (2504), 10 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:10:16,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:10:16,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:10:16,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-08-30 01:10:16,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:10:16,923 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-08-30 01:10:16,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:10:16,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1263115909, now seen corresponding path program 1 times [2023-08-30 01:10:16,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:10:16,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693551528] [2023-08-30 01:10:16,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:10:16,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:10:16,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:10:16,924 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:10:16,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-30 01:10:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:10:17,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 01:10:17,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:10:17,132 INFO L321 Elim1Store]: treesize reduction 103, result has 24.8 percent of original size [2023-08-30 01:10:17,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 59 [2023-08-30 01:10:17,455 INFO L321 Elim1Store]: treesize reduction 48, result has 68.6 percent of original size [2023-08-30 01:10:17,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 163 [2023-08-30 01:10:28,159 INFO L321 Elim1Store]: treesize reduction 72, result has 75.1 percent of original size [2023-08-30 01:10:28,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 126 treesize of output 329 Killed by 15