./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-2_4-container_of.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_4-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:46:19,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:46:19,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:46:19,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:46:19,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:46:19,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:46:19,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:46:19,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:46:19,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:46:19,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:46:19,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:46:19,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:46:19,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:46:19,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:46:19,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:46:19,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:46:19,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:46:19,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:46:19,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:46:19,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:46:19,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:46:19,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:46:19,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:46:19,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:46:19,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:46:19,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:46:19,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:46:19,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:46:19,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:46:19,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:46:19,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:46:19,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:46:19,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:46:19,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:46:19,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:46:19,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:46:19,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:46:19,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:46:19,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:46:19,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:46:19,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:46:19,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:46:19,351 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:46:19,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:46:19,353 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:46:19,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:46:19,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:46:19,353 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:46:19,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:46:19,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:46:19,354 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:46:19,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:46:19,355 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:46:19,355 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:46:19,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:46:19,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:46:19,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:46:19,356 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:46:19,356 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:46:19,356 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:46:19,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:46:19,356 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:46:19,357 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:46:19,357 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:46:19,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:46:19,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:46:19,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:46:19,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:46:19,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:46:19,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:46:19,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:46:19,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:46:19,358 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:46:19,358 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:46:19,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:46:19,359 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:46:19,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:46:19,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:46:19,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:46:19,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:46:19,636 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:46:19,636 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:46:19,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-08-31 23:46:20,606 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:46:20,904 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:46:20,908 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-08-31 23:46:20,930 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/204383d12/12632ed0a24946dc8c8863c1476fc63b/FLAG945a7aec8 [2023-08-31 23:46:20,940 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/204383d12/12632ed0a24946dc8c8863c1476fc63b [2023-08-31 23:46:20,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:46:20,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:46:20,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:46:20,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:46:20,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:46:20,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:46:20" (1/1) ... [2023-08-31 23:46:20,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4ae50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:20, skipping insertion in model container [2023-08-31 23:46:20,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:46:20" (1/1) ... [2023-08-31 23:46:20,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:46:21,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:46:21,090 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 23:46:21,404 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i[75002,75015] [2023-08-31 23:46:21,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:46:21,455 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) [2023-08-31 23:46:21,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@135a0bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:21, skipping insertion in model container [2023-08-31 23:46:21,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:46:21,456 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-31 23:46:21,458 INFO L158 Benchmark]: Toolchain (without parser) took 514.08ms. Allocated memory is still 102.8MB. Free memory was 78.2MB in the beginning and 59.7MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-31 23:46:21,458 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 69.2MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:46:21,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.62ms. Allocated memory is still 102.8MB. Free memory was 77.9MB in the beginning and 59.7MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-31 23:46:21,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 69.2MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.62ms. Allocated memory is still 102.8MB. Free memory was 77.9MB in the beginning and 59.7MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1691]: 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/ldv-races/race-2_4-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:46:23,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:46:23,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:46:23,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:46:23,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:46:23,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:46:23,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:46:23,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:46:23,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:46:23,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:46:23,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:46:23,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:46:23,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:46:23,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:46:23,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:46:23,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:46:23,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:46:23,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:46:23,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:46:23,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:46:23,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:46:23,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:46:23,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:46:23,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:46:23,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:46:23,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:46:23,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:46:23,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:46:23,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:46:23,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:46:23,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:46:23,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:46:23,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:46:23,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:46:23,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:46:23,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:46:23,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:46:23,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:46:23,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:46:23,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:46:23,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:46:23,163 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-31 23:46:23,188 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:46:23,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:46:23,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:46:23,189 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:46:23,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:46:23,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:46:23,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:46:23,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:46:23,204 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:46:23,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:46:23,205 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:46:23,205 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:46:23,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:46:23,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:46:23,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:46:23,205 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:46:23,206 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:46:23,206 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:46:23,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:46:23,206 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:46:23,206 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-31 23:46:23,206 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-31 23:46:23,206 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:46:23,206 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:46:23,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:46:23,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:46:23,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:46:23,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:46:23,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:46:23,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:46:23,207 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-31 23:46:23,208 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-31 23:46:23,208 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:46:23,208 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:46:23,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:46:23,208 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-31 23:46:23,208 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:46:23,208 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:46:23,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:46:23,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:46:23,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:46:23,465 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:46:23,465 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:46:23,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-08-31 23:46:24,503 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:46:24,825 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:46:24,826 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-08-31 23:46:24,854 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/041490baf/745e68a37e9645bdb9f19e31cdad2a86/FLAG7d83b8758 [2023-08-31 23:46:24,865 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/041490baf/745e68a37e9645bdb9f19e31cdad2a86 [2023-08-31 23:46:24,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:46:24,872 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:46:24,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:46:24,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:46:24,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:46:24,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:46:24" (1/1) ... [2023-08-31 23:46:24,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd3acc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:24, skipping insertion in model container [2023-08-31 23:46:24,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:46:24" (1/1) ... [2023-08-31 23:46:24,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:46:24,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:46:25,087 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 23:46:25,514 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i[75002,75015] [2023-08-31 23:46:25,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:46:25,567 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-31 23:46:25,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:46:25,577 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 23:46:25,601 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i[75002,75015] [2023-08-31 23:46:25,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:46:25,613 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:46:25,619 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 23:46:25,641 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i[75002,75015] [2023-08-31 23:46:25,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:46:25,748 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:46:25,748 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:46:25,748 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:46:25,753 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:46:25,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:25 WrapperNode [2023-08-31 23:46:25,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:46:25,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:46:25,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:46:25,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:46:25,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:25" (1/1) ... [2023-08-31 23:46:25,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:25" (1/1) ... [2023-08-31 23:46:25,800 INFO L138 Inliner]: procedures = 473, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 142 [2023-08-31 23:46:25,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:46:25,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:46:25,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:46:25,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:46:25,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:25" (1/1) ... [2023-08-31 23:46:25,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:25" (1/1) ... [2023-08-31 23:46:25,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:25" (1/1) ... [2023-08-31 23:46:25,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:25" (1/1) ... [2023-08-31 23:46:25,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:25" (1/1) ... [2023-08-31 23:46:25,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:25" (1/1) ... [2023-08-31 23:46:25,845 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:25" (1/1) ... [2023-08-31 23:46:25,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:25" (1/1) ... [2023-08-31 23:46:25,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:46:25,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:46:25,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:46:25,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:46:25,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:25" (1/1) ... [2023-08-31 23:46:25,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:46:25,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:46:25,902 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) [2023-08-31 23:46:25,908 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 [2023-08-31 23:46:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:46:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:46:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-31 23:46:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-31 23:46:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:46:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 23:46:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:46:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 23:46:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:46:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:46:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-31 23:46:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-31 23:46:25,927 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-31 23:46:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:46:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-31 23:46:25,928 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:46:26,252 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:46:26,254 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:46:26,619 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:46:26,657 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:46:26,657 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:46:26,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:46:26 BoogieIcfgContainer [2023-08-31 23:46:26,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:46:26,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:46:26,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:46:26,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:46:26,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:46:24" (1/3) ... [2023-08-31 23:46:26,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e1423c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:46:26, skipping insertion in model container [2023-08-31 23:46:26,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:25" (2/3) ... [2023-08-31 23:46:26,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e1423c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:46:26, skipping insertion in model container [2023-08-31 23:46:26,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:46:26" (3/3) ... [2023-08-31 23:46:26,679 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_4-container_of.i [2023-08-31 23:46:26,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:46:26,698 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2023-08-31 23:46:26,698 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:46:26,788 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 23:46:26,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 209 transitions, 434 flow [2023-08-31 23:46:26,909 INFO L130 PetriNetUnfolder]: 8/273 cut-off events. [2023-08-31 23:46:26,909 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:46:26,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 273 events. 8/273 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 800 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 144. Up to 4 conditions per place. [2023-08-31 23:46:26,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 209 transitions, 434 flow [2023-08-31 23:46:26,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 207 transitions, 426 flow [2023-08-31 23:46:26,931 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:46:26,937 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 207 transitions, 426 flow [2023-08-31 23:46:26,944 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 207 transitions, 426 flow [2023-08-31 23:46:26,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 207 transitions, 426 flow [2023-08-31 23:46:26,993 INFO L130 PetriNetUnfolder]: 8/273 cut-off events. [2023-08-31 23:46:26,993 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:46:26,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 273 events. 8/273 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 799 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 144. Up to 4 conditions per place. [2023-08-31 23:46:26,999 INFO L119 LiptonReduction]: Number of co-enabled transitions 6612 [2023-08-31 23:47:39,592 WARN L222 SmtUtils]: Spent 9.38s on a formula simplification that was a NOOP. DAG size: 202 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:47:49,154 WARN L222 SmtUtils]: Spent 9.56s on a formula simplification that was a NOOP. DAG size: 202 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:49:41,271 WARN L222 SmtUtils]: Spent 1.87m on a formula simplification. DAG size of input: 257 DAG size of output: 253 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:50:29,811 WARN L222 SmtUtils]: Spent 48.54s on a formula simplification that was a NOOP. DAG size: 245 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:52:06,803 WARN L222 SmtUtils]: Spent 1.62m on a formula simplification. DAG size of input: 257 DAG size of output: 253 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:52:54,166 WARN L222 SmtUtils]: Spent 47.36s on a formula simplification that was a NOOP. DAG size: 245 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:53:03,961 WARN L222 SmtUtils]: Spent 9.53s on a formula simplification that was a NOOP. DAG size: 214 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:53:13,114 WARN L222 SmtUtils]: Spent 9.15s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:53:24,445 WARN L222 SmtUtils]: Spent 11.33s on a formula simplification that was a NOOP. DAG size: 214 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:53:35,418 WARN L222 SmtUtils]: Spent 10.97s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:53:35,421 INFO L134 LiptonReduction]: Checked pairs total: 33684 [2023-08-31 23:53:35,421 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-08-31 23:53:35,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:53:35,436 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;@54d344b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:53:35,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-08-31 23:53:35,438 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:53:35,438 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:53:35,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:53:35,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:53:35,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:53:35,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:53:35,443 INFO L85 PathProgramCache]: Analyzing trace with hash 759, now seen corresponding path program 1 times [2023-08-31 23:53:35,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:53:35,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976256641] [2023-08-31 23:53:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:53:35,454 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 [2023-08-31 23:53:35,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:53:35,462 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) [2023-08-31 23:53:35,465 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 [2023-08-31 23:53:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:53:35,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-31 23:53:35,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:53:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:53:35,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:53:35,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:53:35,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976256641] [2023-08-31 23:53:35,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976256641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:53:35,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:53:35,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:53:35,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679681064] [2023-08-31 23:53:35,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:53:35,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:53:35,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:53:35,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:53:35,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:53:35,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 429 [2023-08-31 23:53:35,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 194 flow. Second operand has 2 states, 2 states have (on average 191.5) internal successors, (383), 2 states have internal predecessors, (383), 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) [2023-08-31 23:53:35,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:53:35,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 429 [2023-08-31 23:53:35,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:53:36,743 INFO L130 PetriNetUnfolder]: 661/1321 cut-off events. [2023-08-31 23:53:36,744 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 23:53:36,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2502 conditions, 1321 events. 661/1321 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8882 event pairs, 660 based on Foata normal form. 0/1006 useless extension candidates. Maximal degree in co-relation 2336. Up to 1163 conditions per place. [2023-08-31 23:53:36,751 INFO L137 encePairwiseOnDemand]: 414/429 looper letters, 51 selfloop transitions, 0 changer transitions 0/76 dead transitions. [2023-08-31 23:53:36,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 266 flow [2023-08-31 23:53:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:53:36,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:53:36,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 448 transitions. [2023-08-31 23:53:36,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221445221445221 [2023-08-31 23:53:36,770 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 448 transitions. [2023-08-31 23:53:36,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 448 transitions. [2023-08-31 23:53:36,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:53:36,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 448 transitions. [2023-08-31 23:53:36,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 224.0) internal successors, (448), 2 states have internal predecessors, (448), 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) [2023-08-31 23:53:36,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 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) [2023-08-31 23:53:36,784 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 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) [2023-08-31 23:53:36,785 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 194 flow. Second operand 2 states and 448 transitions. [2023-08-31 23:53:36,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 266 flow [2023-08-31 23:53:36,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:53:36,791 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 156 flow [2023-08-31 23:53:36,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2023-08-31 23:53:36,796 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -16 predicate places. [2023-08-31 23:53:36,796 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 156 flow [2023-08-31 23:53:36,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 191.5) internal successors, (383), 2 states have internal predecessors, (383), 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) [2023-08-31 23:53:36,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:53:36,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-31 23:53:36,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-31 23:53:37,005 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 [2023-08-31 23:53:37,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:53:37,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:53:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash 24421, now seen corresponding path program 1 times [2023-08-31 23:53:37,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:53:37,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339795724] [2023-08-31 23:53:37,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:53:37,008 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 [2023-08-31 23:53:37,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:53:37,014 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) [2023-08-31 23:53:37,016 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 [2023-08-31 23:53:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:53:37,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-31 23:53:37,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:53:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:53:37,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:53:37,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:53:37,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339795724] [2023-08-31 23:53:37,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339795724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:53:37,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:53:37,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:53:37,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352287999] [2023-08-31 23:53:37,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:53:37,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:53:37,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:53:37,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:53:37,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:53:37,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 429 [2023-08-31 23:53:37,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 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) [2023-08-31 23:53:37,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:53:37,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 429 [2023-08-31 23:53:37,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:53:39,199 INFO L130 PetriNetUnfolder]: 660/1320 cut-off events. [2023-08-31 23:53:39,199 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 23:53:39,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2490 conditions, 1320 events. 660/1320 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8471 event pairs, 660 based on Foata normal form. 0/1007 useless extension candidates. Maximal degree in co-relation 2487. Up to 1149 conditions per place. [2023-08-31 23:53:39,204 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 62 selfloop transitions, 1 changer transitions 1/89 dead transitions. [2023-08-31 23:53:39,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 310 flow [2023-08-31 23:53:39,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:53:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:53:39,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2023-08-31 23:53:39,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48795648795648794 [2023-08-31 23:53:39,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2023-08-31 23:53:39,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2023-08-31 23:53:39,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:53:39,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2023-08-31 23:53:39,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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) [2023-08-31 23:53:39,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:53:39,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:53:39,212 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 156 flow. Second operand 3 states and 628 transitions. [2023-08-31 23:53:39,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 310 flow [2023-08-31 23:53:39,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:53:39,214 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 165 flow [2023-08-31 23:53:39,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2023-08-31 23:53:39,215 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -13 predicate places. [2023-08-31 23:53:39,215 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 165 flow [2023-08-31 23:53:39,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 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) [2023-08-31 23:53:39,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:53:39,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 23:53:39,225 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 [2023-08-31 23:53:39,424 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 [2023-08-31 23:53:39,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:53:39,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:53:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash 756890, now seen corresponding path program 1 times [2023-08-31 23:53:39,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:53:39,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930154526] [2023-08-31 23:53:39,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:53:39,426 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 [2023-08-31 23:53:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:53:39,427 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) [2023-08-31 23:53:39,441 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 [2023-08-31 23:53:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:53:39,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 23:53:39,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:53:39,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-31 23:53:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:53:39,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:53:39,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:53:39,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930154526] [2023-08-31 23:53:39,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930154526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:53:39,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:53:39,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:53:39,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821168128] [2023-08-31 23:53:39,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:53:39,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:53:39,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:53:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:53:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:53:39,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 429 [2023-08-31 23:53:39,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 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) [2023-08-31 23:53:39,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:53:39,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 429 [2023-08-31 23:53:39,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:53:41,070 INFO L130 PetriNetUnfolder]: 636/1262 cut-off events. [2023-08-31 23:53:41,070 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 23:53:41,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 1262 events. 636/1262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8041 event pairs, 588 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 2422. Up to 1036 conditions per place. [2023-08-31 23:53:41,076 INFO L137 encePairwiseOnDemand]: 422/429 looper letters, 51 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2023-08-31 23:53:41,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 283 flow [2023-08-31 23:53:41,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:53:41,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:53:41,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2023-08-31 23:53:41,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506604506604507 [2023-08-31 23:53:41,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 580 transitions. [2023-08-31 23:53:41,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 580 transitions. [2023-08-31 23:53:41,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:53:41,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 580 transitions. [2023-08-31 23:53:41,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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) [2023-08-31 23:53:41,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:53:41,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:53:41,086 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 165 flow. Second operand 3 states and 580 transitions. [2023-08-31 23:53:41,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 283 flow [2023-08-31 23:53:41,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:53:41,089 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 168 flow [2023-08-31 23:53:41,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2023-08-31 23:53:41,090 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -14 predicate places. [2023-08-31 23:53:41,091 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 168 flow [2023-08-31 23:53:41,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 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) [2023-08-31 23:53:41,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:53:41,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 23:53:41,104 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 [2023-08-31 23:53:41,303 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 [2023-08-31 23:53:41,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:53:41,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:53:41,304 INFO L85 PathProgramCache]: Analyzing trace with hash 749812, now seen corresponding path program 1 times [2023-08-31 23:53:41,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:53:41,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745285543] [2023-08-31 23:53:41,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:53:41,305 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 [2023-08-31 23:53:41,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:53:41,323 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) [2023-08-31 23:53:41,340 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 [2023-08-31 23:53:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:53:41,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 23:53:41,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:53:41,509 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 23:53:41,509 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 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-31 23:53:41,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:53:41,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:53:41,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:53:41,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745285543] [2023-08-31 23:53:41,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745285543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:53:41,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:53:41,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:53:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33084025] [2023-08-31 23:53:41,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:53:41,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:53:41,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:53:41,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:53:41,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:53:41,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 429 [2023-08-31 23:53:41,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 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) [2023-08-31 23:53:41,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:53:41,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 429 [2023-08-31 23:53:41,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:53:42,944 INFO L130 PetriNetUnfolder]: 606/1216 cut-off events. [2023-08-31 23:53:42,944 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 23:53:42,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 1216 events. 606/1216 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7780 event pairs, 558 based on Foata normal form. 0/968 useless extension candidates. Maximal degree in co-relation 2342. Up to 967 conditions per place. [2023-08-31 23:53:42,948 INFO L137 encePairwiseOnDemand]: 418/429 looper letters, 54 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2023-08-31 23:53:42,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 88 transitions, 324 flow [2023-08-31 23:53:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:53:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:53:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-08-31 23:53:42,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864024864024864 [2023-08-31 23:53:42,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-08-31 23:53:42,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-08-31 23:53:42,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:53:42,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-08-31 23:53:42,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 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) [2023-08-31 23:53:42,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:53:42,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:53:42,955 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 168 flow. Second operand 3 states and 626 transitions. [2023-08-31 23:53:42,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 88 transitions, 324 flow [2023-08-31 23:53:42,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:53:42,957 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 185 flow [2023-08-31 23:53:42,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2023-08-31 23:53:42,959 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -15 predicate places. [2023-08-31 23:53:42,959 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 185 flow [2023-08-31 23:53:42,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 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) [2023-08-31 23:53:42,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:53:42,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 23:53:42,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-08-31 23:53:43,169 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 [2023-08-31 23:53:43,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:53:43,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:53:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash 749813, now seen corresponding path program 1 times [2023-08-31 23:53:43,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:53:43,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327109439] [2023-08-31 23:53:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:53:43,172 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 [2023-08-31 23:53:43,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:53:43,173 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) [2023-08-31 23:53:43,175 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 [2023-08-31 23:53:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:53:43,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 23:53:43,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:53:43,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:53:43,338 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 12 treesize of output 14 [2023-08-31 23:53:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:53:43,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:53:43,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:53:43,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327109439] [2023-08-31 23:53:43,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327109439] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:53:43,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:53:43,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:53:43,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330000644] [2023-08-31 23:53:43,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:53:43,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:53:43,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:53:43,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:53:43,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:53:43,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 429 [2023-08-31 23:53:43,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2023-08-31 23:53:43,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:53:43,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 429 [2023-08-31 23:53:43,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:53:44,197 INFO L130 PetriNetUnfolder]: 600/1194 cut-off events. [2023-08-31 23:53:44,198 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 23:53:44,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2339 conditions, 1194 events. 600/1194 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7625 event pairs, 600 based on Foata normal form. 0/958 useless extension candidates. Maximal degree in co-relation 2333. Up to 1052 conditions per place. [2023-08-31 23:53:44,203 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 44 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-31 23:53:44,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 71 transitions, 273 flow [2023-08-31 23:53:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:53:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:53:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-31 23:53:44,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2023-08-31 23:53:44,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-31 23:53:44,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-31 23:53:44,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:53:44,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-31 23:53:44,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 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) [2023-08-31 23:53:44,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:53:44,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:53:44,210 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 185 flow. Second operand 3 states and 611 transitions. [2023-08-31 23:53:44,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 71 transitions, 273 flow [2023-08-31 23:53:44,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 71 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:53:44,212 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 176 flow [2023-08-31 23:53:44,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2023-08-31 23:53:44,212 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -16 predicate places. [2023-08-31 23:53:44,212 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 176 flow [2023-08-31 23:53:44,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2023-08-31 23:53:44,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:53:44,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 23:53:44,222 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 [2023-08-31 23:53:44,422 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 [2023-08-31 23:53:44,423 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:53:44,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:53:44,423 INFO L85 PathProgramCache]: Analyzing trace with hash 756929, now seen corresponding path program 1 times [2023-08-31 23:53:44,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:53:44,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425773878] [2023-08-31 23:53:44,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:53:44,424 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 [2023-08-31 23:53:44,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:53:44,425 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) [2023-08-31 23:53:44,428 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 [2023-08-31 23:53:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:53:44,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-31 23:53:44,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:53:44,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 23:53:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:53:44,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:53:44,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:53:44,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425773878] [2023-08-31 23:53:44,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425773878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:53:44,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:53:44,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:53:44,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125983455] [2023-08-31 23:53:44,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:53:44,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:53:44,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:53:44,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:53:44,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:53:44,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 429 [2023-08-31 23:53:44,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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) [2023-08-31 23:53:44,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:53:44,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 429 [2023-08-31 23:53:44,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:53:46,145 INFO L130 PetriNetUnfolder]: 504/1030 cut-off events. [2023-08-31 23:53:46,146 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 23:53:46,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 1030 events. 504/1030 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6375 event pairs, 183 based on Foata normal form. 17/862 useless extension candidates. Maximal degree in co-relation 1984. Up to 562 conditions per place. [2023-08-31 23:53:46,150 INFO L137 encePairwiseOnDemand]: 420/429 looper letters, 52 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2023-08-31 23:53:46,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 82 transitions, 312 flow [2023-08-31 23:53:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:53:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:53:46,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 604 transitions. [2023-08-31 23:53:46,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693084693084693 [2023-08-31 23:53:46,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 604 transitions. [2023-08-31 23:53:46,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 604 transitions. [2023-08-31 23:53:46,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:53:46,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 604 transitions. [2023-08-31 23:53:46,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 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) [2023-08-31 23:53:46,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:53:46,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:53:46,155 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 176 flow. Second operand 3 states and 604 transitions. [2023-08-31 23:53:46,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 82 transitions, 312 flow [2023-08-31 23:53:46,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:53:46,157 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 197 flow [2023-08-31 23:53:46,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2023-08-31 23:53:46,157 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -14 predicate places. [2023-08-31 23:53:46,157 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 197 flow [2023-08-31 23:53:46,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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) [2023-08-31 23:53:46,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:53:46,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 23:53:46,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-31 23:53:46,366 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 [2023-08-31 23:53:46,366 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:53:46,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:53:46,367 INFO L85 PathProgramCache]: Analyzing trace with hash 23245384, now seen corresponding path program 1 times [2023-08-31 23:53:46,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:53:46,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879480447] [2023-08-31 23:53:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:53:46,367 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 [2023-08-31 23:53:46,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:53:46,370 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) [2023-08-31 23:53:46,370 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 [2023-08-31 23:53:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:53:46,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-31 23:53:46,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:53:46,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-31 23:53:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:53:46,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:53:46,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:53:46,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879480447] [2023-08-31 23:53:46,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879480447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:53:46,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:53:46,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:53:46,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391213264] [2023-08-31 23:53:46,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:53:46,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:53:46,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:53:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:53:46,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:53:47,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 429 [2023-08-31 23:53:47,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 180.8) internal successors, (904), 5 states have internal predecessors, (904), 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) [2023-08-31 23:53:47,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:53:47,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 429 [2023-08-31 23:53:47,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:53:49,988 INFO L130 PetriNetUnfolder]: 856/1746 cut-off events. [2023-08-31 23:53:49,989 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2023-08-31 23:53:49,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3465 conditions, 1746 events. 856/1746 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11868 event pairs, 440 based on Foata normal form. 0/1416 useless extension candidates. Maximal degree in co-relation 3458. Up to 1067 conditions per place. [2023-08-31 23:53:49,997 INFO L137 encePairwiseOnDemand]: 412/429 looper letters, 86 selfloop transitions, 16 changer transitions 0/122 dead transitions. [2023-08-31 23:53:49,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 122 transitions, 524 flow [2023-08-31 23:53:49,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:53:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:53:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1187 transitions. [2023-08-31 23:53:50,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46114996114996115 [2023-08-31 23:53:50,002 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1187 transitions. [2023-08-31 23:53:50,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1187 transitions. [2023-08-31 23:53:50,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:53:50,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1187 transitions. [2023-08-31 23:53:50,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.83333333333334) internal successors, (1187), 6 states have internal predecessors, (1187), 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) [2023-08-31 23:53:50,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-08-31 23:53:50,007 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-08-31 23:53:50,007 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 197 flow. Second operand 6 states and 1187 transitions. [2023-08-31 23:53:50,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 122 transitions, 524 flow [2023-08-31 23:53:50,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 122 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:53:50,011 INFO L231 Difference]: Finished difference. Result has 87 places, 77 transitions, 279 flow [2023-08-31 23:53:50,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2023-08-31 23:53:50,011 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -7 predicate places. [2023-08-31 23:53:50,012 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 279 flow [2023-08-31 23:53:50,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.8) internal successors, (904), 5 states have internal predecessors, (904), 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) [2023-08-31 23:53:50,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:53:50,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 23:53:50,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-31 23:53:50,222 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 [2023-08-31 23:53:50,223 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:53:50,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:53:50,223 INFO L85 PathProgramCache]: Analyzing trace with hash 23245385, now seen corresponding path program 1 times [2023-08-31 23:53:50,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:53:50,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867495165] [2023-08-31 23:53:50,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:53:50,225 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 [2023-08-31 23:53:50,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:53:50,225 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) [2023-08-31 23:53:50,226 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 [2023-08-31 23:53:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:53:50,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-31 23:53:50,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:53:50,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 23:53:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:53:50,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:53:50,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:53:50,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867495165] [2023-08-31 23:53:50,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867495165] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:53:50,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:53:50,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:53:50,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652784799] [2023-08-31 23:53:50,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:53:50,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:53:50,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:53:50,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:53:50,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:53:51,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 429 [2023-08-31 23:53:51,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 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) [2023-08-31 23:53:51,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:53:51,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 429 [2023-08-31 23:53:51,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:53:53,699 INFO L130 PetriNetUnfolder]: 751/1501 cut-off events. [2023-08-31 23:53:53,699 INFO L131 PetriNetUnfolder]: For 468/512 co-relation queries the response was YES. [2023-08-31 23:53:53,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3385 conditions, 1501 events. 751/1501 cut-off events. For 468/512 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10138 event pairs, 151 based on Foata normal form. 138/1409 useless extension candidates. Maximal degree in co-relation 3375. Up to 819 conditions per place. [2023-08-31 23:53:53,705 INFO L137 encePairwiseOnDemand]: 420/429 looper letters, 76 selfloop transitions, 9 changer transitions 2/111 dead transitions. [2023-08-31 23:53:53,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 111 transitions, 536 flow [2023-08-31 23:53:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:53:53,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:53:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1003 transitions. [2023-08-31 23:53:53,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675990675990676 [2023-08-31 23:53:53,709 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1003 transitions. [2023-08-31 23:53:53,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1003 transitions. [2023-08-31 23:53:53,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:53:53,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1003 transitions. [2023-08-31 23:53:53,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 200.6) internal successors, (1003), 5 states have internal predecessors, (1003), 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) [2023-08-31 23:53:53,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 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) [2023-08-31 23:53:53,723 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 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) [2023-08-31 23:53:53,723 INFO L175 Difference]: Start difference. First operand has 87 places, 77 transitions, 279 flow. Second operand 5 states and 1003 transitions. [2023-08-31 23:53:53,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 111 transitions, 536 flow [2023-08-31 23:53:53,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 111 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:53:53,729 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 332 flow [2023-08-31 23:53:53,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2023-08-31 23:53:53,731 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2023-08-31 23:53:53,731 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 332 flow [2023-08-31 23:53:53,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 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) [2023-08-31 23:53:53,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:53:53,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 23:53:53,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-31 23:53:53,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:53:53,940 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:53:53,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:53:53,941 INFO L85 PathProgramCache]: Analyzing trace with hash 727421441, now seen corresponding path program 1 times [2023-08-31 23:53:53,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:53:53,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533310138] [2023-08-31 23:53:53,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:53:53,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:53:53,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:53:53,942 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:53:53,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-31 23:53:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:53:54,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 23:53:54,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:53:54,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 45 [2023-08-31 23:53:54,173 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 23:53:54,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 73 treesize of output 93 [2023-08-31 23:53:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:53:54,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:53:54,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:53:54,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533310138] [2023-08-31 23:53:54,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533310138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:53:54,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:53:54,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:53:54,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676572900] [2023-08-31 23:53:54,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:53:54,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:53:54,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:53:54,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:53:54,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:53:54,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 429 [2023-08-31 23:53:54,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 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) [2023-08-31 23:53:54,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:53:54,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 429 [2023-08-31 23:53:54,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:53:56,232 INFO L130 PetriNetUnfolder]: 1622/3002 cut-off events. [2023-08-31 23:53:56,232 INFO L131 PetriNetUnfolder]: For 2154/2168 co-relation queries the response was YES. [2023-08-31 23:53:56,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7395 conditions, 3002 events. 1622/3002 cut-off events. For 2154/2168 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18980 event pairs, 1144 based on Foata normal form. 0/2499 useless extension candidates. Maximal degree in co-relation 7382. Up to 2348 conditions per place. [2023-08-31 23:53:56,252 INFO L137 encePairwiseOnDemand]: 420/429 looper letters, 65 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2023-08-31 23:53:56,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 95 transitions, 542 flow [2023-08-31 23:53:56,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:53:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:53:56,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-08-31 23:53:56,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592074592074592 [2023-08-31 23:53:56,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-08-31 23:53:56,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-08-31 23:53:56,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:53:56,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-08-31 23:53:56,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2023-08-31 23:53:56,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:53:56,260 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:53:56,260 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 332 flow. Second operand 3 states and 591 transitions. [2023-08-31 23:53:56,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 95 transitions, 542 flow [2023-08-31 23:53:56,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 95 transitions, 519 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-31 23:53:56,264 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 402 flow [2023-08-31 23:53:56,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-08-31 23:53:56,264 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2023-08-31 23:53:56,264 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 402 flow [2023-08-31 23:53:56,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 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) [2023-08-31 23:53:56,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:53:56,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:53:56,280 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 (10)] Ended with exit code 0 [2023-08-31 23:53:56,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:53:56,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:53:56,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:53:56,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1075229008, now seen corresponding path program 1 times [2023-08-31 23:53:56,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:53:56,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113293065] [2023-08-31 23:53:56,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:53:56,480 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 [2023-08-31 23:53:56,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:53:56,481 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:53:56,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-31 23:53:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:53:56,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 23:53:56,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:53:56,670 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:53:56,671 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:53:56,671 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:53:56,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-08-31 23:53:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:53:56,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:53:56,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:53:56,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113293065] [2023-08-31 23:53:56,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113293065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:53:56,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:53:56,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:53:56,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847088962] [2023-08-31 23:53:56,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:53:56,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:53:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:53:56,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:53:56,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:53:57,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 429 [2023-08-31 23:53:57,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 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) [2023-08-31 23:53:57,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:53:57,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 429 [2023-08-31 23:53:57,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:53:58,718 INFO L130 PetriNetUnfolder]: 1934/3480 cut-off events. [2023-08-31 23:53:58,719 INFO L131 PetriNetUnfolder]: For 3651/3665 co-relation queries the response was YES. [2023-08-31 23:53:58,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9948 conditions, 3480 events. 1934/3480 cut-off events. For 3651/3665 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 21893 event pairs, 1316 based on Foata normal form. 0/3009 useless extension candidates. Maximal degree in co-relation 9935. Up to 2799 conditions per place. [2023-08-31 23:53:58,747 INFO L137 encePairwiseOnDemand]: 421/429 looper letters, 74 selfloop transitions, 14 changer transitions 0/106 dead transitions. [2023-08-31 23:53:58,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 106 transitions, 685 flow [2023-08-31 23:53:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:53:58,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:53:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-08-31 23:53:58,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45998445998445997 [2023-08-31 23:53:58,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-08-31 23:53:58,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-08-31 23:53:58,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:53:58,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-08-31 23:53:58,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 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) [2023-08-31 23:53:58,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:53:58,768 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:53:58,768 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 402 flow. Second operand 3 states and 592 transitions. [2023-08-31 23:53:58,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 106 transitions, 685 flow [2023-08-31 23:53:58,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 106 transitions, 649 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:53:58,775 INFO L231 Difference]: Finished difference. Result has 94 places, 97 transitions, 506 flow [2023-08-31 23:53:58,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=94, PETRI_TRANSITIONS=97} [2023-08-31 23:53:58,776 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2023-08-31 23:53:58,777 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 97 transitions, 506 flow [2023-08-31 23:53:58,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 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) [2023-08-31 23:53:58,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:53:58,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:53:58,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-31 23:53:58,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:53:58,977 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:53:58,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:53:58,978 INFO L85 PathProgramCache]: Analyzing trace with hash 863295962, now seen corresponding path program 1 times [2023-08-31 23:53:58,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:53:58,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210911530] [2023-08-31 23:53:58,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:53:58,978 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 [2023-08-31 23:53:58,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:53:58,979 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:53:58,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-31 23:53:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:53:59,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-31 23:53:59,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:53:59,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-31 23:53:59,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:53:59,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:53:59,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:53:59,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210911530] [2023-08-31 23:53:59,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210911530] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:53:59,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:53:59,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:53:59,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083663743] [2023-08-31 23:53:59,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:53:59,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:53:59,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:53:59,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:53:59,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:53:59,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 429 [2023-08-31 23:53:59,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 97 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 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) [2023-08-31 23:53:59,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:53:59,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 429 [2023-08-31 23:53:59,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:03,138 INFO L130 PetriNetUnfolder]: 1545/3088 cut-off events. [2023-08-31 23:54:03,139 INFO L131 PetriNetUnfolder]: For 3048/3320 co-relation queries the response was YES. [2023-08-31 23:54:03,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8924 conditions, 3088 events. 1545/3088 cut-off events. For 3048/3320 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 23242 event pairs, 275 based on Foata normal form. 295/3043 useless extension candidates. Maximal degree in co-relation 8910. Up to 1714 conditions per place. [2023-08-31 23:54:03,151 INFO L137 encePairwiseOnDemand]: 412/429 looper letters, 102 selfloop transitions, 24 changer transitions 0/154 dead transitions. [2023-08-31 23:54:03,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 154 transitions, 999 flow [2023-08-31 23:54:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:54:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:54:03,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1187 transitions. [2023-08-31 23:54:03,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46114996114996115 [2023-08-31 23:54:03,179 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1187 transitions. [2023-08-31 23:54:03,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1187 transitions. [2023-08-31 23:54:03,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:03,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1187 transitions. [2023-08-31 23:54:03,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.83333333333334) internal successors, (1187), 6 states have internal predecessors, (1187), 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) [2023-08-31 23:54:03,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-08-31 23:54:03,185 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 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) [2023-08-31 23:54:03,185 INFO L175 Difference]: Start difference. First operand has 94 places, 97 transitions, 506 flow. Second operand 6 states and 1187 transitions. [2023-08-31 23:54:03,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 154 transitions, 999 flow [2023-08-31 23:54:03,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 154 transitions, 983 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:54:03,190 INFO L231 Difference]: Finished difference. Result has 102 places, 105 transitions, 668 flow [2023-08-31 23:54:03,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=668, PETRI_PLACES=102, PETRI_TRANSITIONS=105} [2023-08-31 23:54:03,191 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2023-08-31 23:54:03,191 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 105 transitions, 668 flow [2023-08-31 23:54:03,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 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) [2023-08-31 23:54:03,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:03,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:54:03,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-31 23:54:03,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:54:03,405 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:54:03,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:03,405 INFO L85 PathProgramCache]: Analyzing trace with hash 863295963, now seen corresponding path program 1 times [2023-08-31 23:54:03,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:03,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129859331] [2023-08-31 23:54:03,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:03,406 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 [2023-08-31 23:54:03,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:03,416 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:54:03,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-31 23:54:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:03,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-31 23:54:03,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:03,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 23:54:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:03,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:03,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:03,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129859331] [2023-08-31 23:54:03,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129859331] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:03,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:03,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:54:03,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270799046] [2023-08-31 23:54:03,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:03,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:54:03,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:54:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:54:04,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 429 [2023-08-31 23:54:04,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 105 transitions, 668 flow. Second operand has 5 states, 5 states have (on average 184.2) internal successors, (921), 5 states have internal predecessors, (921), 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) [2023-08-31 23:54:04,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:04,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 429 [2023-08-31 23:54:04,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:07,693 INFO L130 PetriNetUnfolder]: 1547/2882 cut-off events. [2023-08-31 23:54:07,693 INFO L131 PetriNetUnfolder]: For 4518/4844 co-relation queries the response was YES. [2023-08-31 23:54:07,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8783 conditions, 2882 events. 1547/2882 cut-off events. For 4518/4844 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20090 event pairs, 383 based on Foata normal form. 344/2843 useless extension candidates. Maximal degree in co-relation 8766. Up to 1113 conditions per place. [2023-08-31 23:54:07,705 INFO L137 encePairwiseOnDemand]: 420/429 looper letters, 87 selfloop transitions, 13 changer transitions 2/140 dead transitions. [2023-08-31 23:54:07,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 140 transitions, 1011 flow [2023-08-31 23:54:07,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:54:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:54:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1000 transitions. [2023-08-31 23:54:07,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662004662004662 [2023-08-31 23:54:07,719 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1000 transitions. [2023-08-31 23:54:07,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1000 transitions. [2023-08-31 23:54:07,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:07,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1000 transitions. [2023-08-31 23:54:07,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 200.0) internal successors, (1000), 5 states have internal predecessors, (1000), 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) [2023-08-31 23:54:07,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 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) [2023-08-31 23:54:07,751 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 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) [2023-08-31 23:54:07,752 INFO L175 Difference]: Start difference. First operand has 102 places, 105 transitions, 668 flow. Second operand 5 states and 1000 transitions. [2023-08-31 23:54:07,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 140 transitions, 1011 flow [2023-08-31 23:54:07,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 140 transitions, 1007 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:54:07,759 INFO L231 Difference]: Finished difference. Result has 107 places, 110 transitions, 741 flow [2023-08-31 23:54:07,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=741, PETRI_PLACES=107, PETRI_TRANSITIONS=110} [2023-08-31 23:54:07,760 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 13 predicate places. [2023-08-31 23:54:07,760 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 110 transitions, 741 flow [2023-08-31 23:54:07,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 184.2) internal successors, (921), 5 states have internal predecessors, (921), 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) [2023-08-31 23:54:07,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:07,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:54:07,785 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 (13)] Forceful destruction successful, exit code 0 [2023-08-31 23:54:07,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 [2023-08-31 23:54:07,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:54:07,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:07,971 INFO L85 PathProgramCache]: Analyzing trace with hash 863295537, now seen corresponding path program 1 times [2023-08-31 23:54:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:07,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139701470] [2023-08-31 23:54:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:07,972 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 [2023-08-31 23:54:07,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:07,985 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2023-08-31 23:54:08,006 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 (14)] Waiting until timeout for monitored process [2023-08-31 23:54:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:08,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 23:54:08,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:08,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 23:54:08,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-31 23:54:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:08,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:08,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:08,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139701470] [2023-08-31 23:54:08,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139701470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:08,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:08,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:54:08,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870290891] [2023-08-31 23:54:08,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:08,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:54:08,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:08,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:54:08,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:54:08,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 429 [2023-08-31 23:54:08,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 110 transitions, 741 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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) [2023-08-31 23:54:08,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:08,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 429 [2023-08-31 23:54:08,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:09,447 INFO L130 PetriNetUnfolder]: 1222/2353 cut-off events. [2023-08-31 23:54:09,447 INFO L131 PetriNetUnfolder]: For 4875/5120 co-relation queries the response was YES. [2023-08-31 23:54:09,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7678 conditions, 2353 events. 1222/2353 cut-off events. For 4875/5120 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16380 event pairs, 736 based on Foata normal form. 17/2059 useless extension candidates. Maximal degree in co-relation 7658. Up to 1444 conditions per place. [2023-08-31 23:54:09,468 INFO L137 encePairwiseOnDemand]: 418/429 looper letters, 48 selfloop transitions, 15 changer transitions 0/104 dead transitions. [2023-08-31 23:54:09,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 104 transitions, 801 flow [2023-08-31 23:54:09,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:54:09,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:54:09,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2023-08-31 23:54:09,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44522144522144524 [2023-08-31 23:54:09,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2023-08-31 23:54:09,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2023-08-31 23:54:09,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:09,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2023-08-31 23:54:09,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 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) [2023-08-31 23:54:09,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:54:09,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:54:09,474 INFO L175 Difference]: Start difference. First operand has 107 places, 110 transitions, 741 flow. Second operand 3 states and 573 transitions. [2023-08-31 23:54:09,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 104 transitions, 801 flow [2023-08-31 23:54:09,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 104 transitions, 771 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:54:09,488 INFO L231 Difference]: Finished difference. Result has 98 places, 100 transitions, 663 flow [2023-08-31 23:54:09,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=663, PETRI_PLACES=98, PETRI_TRANSITIONS=100} [2023-08-31 23:54:09,500 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 4 predicate places. [2023-08-31 23:54:09,500 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 663 flow [2023-08-31 23:54:09,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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) [2023-08-31 23:54:09,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:09,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:54:09,515 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 (14)] Forceful destruction successful, exit code 0 [2023-08-31 23:54:09,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 [2023-08-31 23:54:09,701 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:54:09,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:09,702 INFO L85 PathProgramCache]: Analyzing trace with hash 992358416, now seen corresponding path program 1 times [2023-08-31 23:54:09,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:09,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822430028] [2023-08-31 23:54:09,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:09,702 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 [2023-08-31 23:54:09,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:09,703 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2023-08-31 23:54:09,706 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 (15)] Waiting until timeout for monitored process [2023-08-31 23:54:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:09,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 23:54:09,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:09,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-31 23:54:09,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 23:54:09,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:54:09,998 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 12 treesize of output 14 [2023-08-31 23:54:10,018 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-31 23:54:10,018 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 [2023-08-31 23:54:10,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:10,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:10,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:10,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822430028] [2023-08-31 23:54:10,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822430028] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:10,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:10,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:54:10,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630847572] [2023-08-31 23:54:10,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:10,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:54:10,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:10,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:54:10,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:54:10,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 429 [2023-08-31 23:54:10,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 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) [2023-08-31 23:54:10,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:10,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 429 [2023-08-31 23:54:10,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:12,526 INFO L130 PetriNetUnfolder]: 1132/2201 cut-off events. [2023-08-31 23:54:12,527 INFO L131 PetriNetUnfolder]: For 5101/5310 co-relation queries the response was YES. [2023-08-31 23:54:12,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7225 conditions, 2201 events. 1132/2201 cut-off events. For 5101/5310 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 15059 event pairs, 517 based on Foata normal form. 53/1976 useless extension candidates. Maximal degree in co-relation 7206. Up to 911 conditions per place. [2023-08-31 23:54:12,535 INFO L137 encePairwiseOnDemand]: 421/429 looper letters, 48 selfloop transitions, 19 changer transitions 1/109 dead transitions. [2023-08-31 23:54:12,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 109 transitions, 829 flow [2023-08-31 23:54:12,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:54:12,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:54:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 890 transitions. [2023-08-31 23:54:12,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149184149184149 [2023-08-31 23:54:12,556 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 890 transitions. [2023-08-31 23:54:12,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 890 transitions. [2023-08-31 23:54:12,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:12,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 890 transitions. [2023-08-31 23:54:12,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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) [2023-08-31 23:54:12,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 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) [2023-08-31 23:54:12,569 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 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) [2023-08-31 23:54:12,569 INFO L175 Difference]: Start difference. First operand has 98 places, 100 transitions, 663 flow. Second operand 5 states and 890 transitions. [2023-08-31 23:54:12,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 109 transitions, 829 flow [2023-08-31 23:54:12,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 109 transitions, 799 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:54:12,589 INFO L231 Difference]: Finished difference. Result has 97 places, 97 transitions, 665 flow [2023-08-31 23:54:12,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=665, PETRI_PLACES=97, PETRI_TRANSITIONS=97} [2023-08-31 23:54:12,590 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2023-08-31 23:54:12,590 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 97 transitions, 665 flow [2023-08-31 23:54:12,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 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) [2023-08-31 23:54:12,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:12,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:54:12,617 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 (15)] Forceful destruction successful, exit code 0 [2023-08-31 23:54:12,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 [2023-08-31 23:54:12,820 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:54:12,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1792080940, now seen corresponding path program 1 times [2023-08-31 23:54:12,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:12,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718109648] [2023-08-31 23:54:12,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:12,821 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 [2023-08-31 23:54:12,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:12,822 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-08-31 23:54:12,867 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 (16)] Waiting until timeout for monitored process [2023-08-31 23:54:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:13,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 23:54:13,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:13,074 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_199| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_199| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_199|)))) is different from true [2023-08-31 23:54:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:13,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:13,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:13,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718109648] [2023-08-31 23:54:13,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718109648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:13,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:13,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:54:13,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105499998] [2023-08-31 23:54:13,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:13,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:54:13,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:13,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:54:13,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-08-31 23:54:13,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 429 [2023-08-31 23:54:13,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 665 flow. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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) [2023-08-31 23:54:13,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:13,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 429 [2023-08-31 23:54:13,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:14,848 INFO L130 PetriNetUnfolder]: 2312/3888 cut-off events. [2023-08-31 23:54:14,849 INFO L131 PetriNetUnfolder]: For 9526/9526 co-relation queries the response was YES. [2023-08-31 23:54:14,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13852 conditions, 3888 events. 2312/3888 cut-off events. For 9526/9526 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 22606 event pairs, 783 based on Foata normal form. 0/3517 useless extension candidates. Maximal degree in co-relation 13833. Up to 2219 conditions per place. [2023-08-31 23:54:14,878 INFO L137 encePairwiseOnDemand]: 407/429 looper letters, 84 selfloop transitions, 32 changer transitions 2/126 dead transitions. [2023-08-31 23:54:14,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 126 transitions, 1055 flow [2023-08-31 23:54:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:54:14,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:54:14,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 581 transitions. [2023-08-31 23:54:14,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385780885780886 [2023-08-31 23:54:14,880 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 581 transitions. [2023-08-31 23:54:14,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 581 transitions. [2023-08-31 23:54:14,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:14,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 581 transitions. [2023-08-31 23:54:14,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 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) [2023-08-31 23:54:14,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 429.0) internal successors, (2145), 5 states have internal predecessors, (2145), 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) [2023-08-31 23:54:14,883 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 429.0) internal successors, (2145), 5 states have internal predecessors, (2145), 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) [2023-08-31 23:54:14,883 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 665 flow. Second operand 4 states and 581 transitions. [2023-08-31 23:54:14,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 126 transitions, 1055 flow [2023-08-31 23:54:14,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 126 transitions, 1025 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:54:14,889 INFO L231 Difference]: Finished difference. Result has 99 places, 112 transitions, 834 flow [2023-08-31 23:54:14,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=834, PETRI_PLACES=99, PETRI_TRANSITIONS=112} [2023-08-31 23:54:14,890 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2023-08-31 23:54:14,890 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 112 transitions, 834 flow [2023-08-31 23:54:14,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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) [2023-08-31 23:54:14,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:14,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:54:14,900 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 (16)] Forceful destruction successful, exit code 0 [2023-08-31 23:54:15,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 [2023-08-31 23:54:15,100 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:54:15,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:15,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1522924607, now seen corresponding path program 1 times [2023-08-31 23:54:15,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:15,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815702158] [2023-08-31 23:54:15,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:15,101 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 [2023-08-31 23:54:15,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:15,103 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-08-31 23:54:15,104 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 (17)] Waiting until timeout for monitored process [2023-08-31 23:54:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:15,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-31 23:54:15,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:15,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-31 23:54:15,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 23:54:15,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:54:15,425 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 12 treesize of output 14 [2023-08-31 23:54:15,433 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-31 23:54:15,434 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 [2023-08-31 23:54:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:15,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:15,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:15,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815702158] [2023-08-31 23:54:15,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815702158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:15,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:15,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:54:15,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874684556] [2023-08-31 23:54:15,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:15,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:54:15,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:15,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:54:15,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:54:16,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 429 [2023-08-31 23:54:16,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 112 transitions, 834 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 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) [2023-08-31 23:54:16,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:16,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 429 [2023-08-31 23:54:16,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:19,436 INFO L130 PetriNetUnfolder]: 2131/3770 cut-off events. [2023-08-31 23:54:19,437 INFO L131 PetriNetUnfolder]: For 10379/10602 co-relation queries the response was YES. [2023-08-31 23:54:19,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14150 conditions, 3770 events. 2131/3770 cut-off events. For 10379/10602 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 24606 event pairs, 914 based on Foata normal form. 125/3582 useless extension candidates. Maximal degree in co-relation 14130. Up to 1718 conditions per place. [2023-08-31 23:54:19,451 INFO L137 encePairwiseOnDemand]: 415/429 looper letters, 103 selfloop transitions, 24 changer transitions 0/157 dead transitions. [2023-08-31 23:54:19,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 157 transitions, 1301 flow [2023-08-31 23:54:19,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:54:19,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:54:19,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1322 transitions. [2023-08-31 23:54:19,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44022644022644025 [2023-08-31 23:54:19,471 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1322 transitions. [2023-08-31 23:54:19,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1322 transitions. [2023-08-31 23:54:19,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:19,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1322 transitions. [2023-08-31 23:54:19,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 188.85714285714286) internal successors, (1322), 7 states have internal predecessors, (1322), 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) [2023-08-31 23:54:19,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 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) [2023-08-31 23:54:19,475 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 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) [2023-08-31 23:54:19,476 INFO L175 Difference]: Start difference. First operand has 99 places, 112 transitions, 834 flow. Second operand 7 states and 1322 transitions. [2023-08-31 23:54:19,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 157 transitions, 1301 flow [2023-08-31 23:54:19,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 157 transitions, 1219 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-08-31 23:54:19,488 INFO L231 Difference]: Finished difference. Result has 98 places, 110 transitions, 820 flow [2023-08-31 23:54:19,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=820, PETRI_PLACES=98, PETRI_TRANSITIONS=110} [2023-08-31 23:54:19,488 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 4 predicate places. [2023-08-31 23:54:19,488 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 110 transitions, 820 flow [2023-08-31 23:54:19,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 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) [2023-08-31 23:54:19,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:19,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:54:19,501 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 (17)] Forceful destruction successful, exit code 0 [2023-08-31 23:54:19,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 [2023-08-31 23:54:19,699 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:54:19,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash 698935319, now seen corresponding path program 1 times [2023-08-31 23:54:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:19,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572014337] [2023-08-31 23:54:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:19,700 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 [2023-08-31 23:54:19,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:19,701 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-08-31 23:54:19,703 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 (18)] Waiting until timeout for monitored process [2023-08-31 23:54:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:19,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-31 23:54:19,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:19,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 23:54:19,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-31 23:54:19,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:54:19,972 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 12 treesize of output 14 [2023-08-31 23:54:19,983 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-31 23:54:19,983 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 [2023-08-31 23:54:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:19,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:19,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:19,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572014337] [2023-08-31 23:54:19,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572014337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:19,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:19,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:54:19,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656793044] [2023-08-31 23:54:19,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:19,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:54:19,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:19,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:54:19,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:54:20,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 429 [2023-08-31 23:54:20,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 110 transitions, 820 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 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) [2023-08-31 23:54:20,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:20,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 429 [2023-08-31 23:54:20,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:23,320 INFO L130 PetriNetUnfolder]: 2420/4327 cut-off events. [2023-08-31 23:54:23,320 INFO L131 PetriNetUnfolder]: For 12593/12825 co-relation queries the response was YES. [2023-08-31 23:54:23,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16597 conditions, 4327 events. 2420/4327 cut-off events. For 12593/12825 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 29511 event pairs, 791 based on Foata normal form. 155/4175 useless extension candidates. Maximal degree in co-relation 16577. Up to 2183 conditions per place. [2023-08-31 23:54:23,333 INFO L137 encePairwiseOnDemand]: 415/429 looper letters, 107 selfloop transitions, 24 changer transitions 0/159 dead transitions. [2023-08-31 23:54:23,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 159 transitions, 1319 flow [2023-08-31 23:54:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:54:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:54:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1326 transitions. [2023-08-31 23:54:23,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2023-08-31 23:54:23,336 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1326 transitions. [2023-08-31 23:54:23,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1326 transitions. [2023-08-31 23:54:23,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:23,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1326 transitions. [2023-08-31 23:54:23,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 189.42857142857142) internal successors, (1326), 7 states have internal predecessors, (1326), 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) [2023-08-31 23:54:23,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 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) [2023-08-31 23:54:23,341 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 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) [2023-08-31 23:54:23,341 INFO L175 Difference]: Start difference. First operand has 98 places, 110 transitions, 820 flow. Second operand 7 states and 1326 transitions. [2023-08-31 23:54:23,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 159 transitions, 1319 flow [2023-08-31 23:54:23,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 159 transitions, 1282 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-31 23:54:23,357 INFO L231 Difference]: Finished difference. Result has 97 places, 108 transitions, 855 flow [2023-08-31 23:54:23,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=855, PETRI_PLACES=97, PETRI_TRANSITIONS=108} [2023-08-31 23:54:23,358 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2023-08-31 23:54:23,358 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 108 transitions, 855 flow [2023-08-31 23:54:23,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 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) [2023-08-31 23:54:23,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:23,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:54:23,375 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 (18)] Forceful destruction successful, exit code 0 [2023-08-31 23:54:23,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2023-08-31 23:54:23,569 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:54:23,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:23,569 INFO L85 PathProgramCache]: Analyzing trace with hash 173595306, now seen corresponding path program 1 times [2023-08-31 23:54:23,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:23,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814288023] [2023-08-31 23:54:23,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:23,570 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 [2023-08-31 23:54:23,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:23,571 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-08-31 23:54:23,573 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 (19)] Waiting until timeout for monitored process [2023-08-31 23:54:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:23,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 23:54:23,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:23,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:54:23,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:54:23,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:54:23,797 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:54:23,798 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:54:23,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-08-31 23:54:23,832 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 23:54:23,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 69 treesize of output 89 [2023-08-31 23:54:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:23,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:23,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:23,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814288023] [2023-08-31 23:54:23,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814288023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:23,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:23,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:54:23,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804595758] [2023-08-31 23:54:23,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:23,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:54:23,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:23,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:54:23,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:54:24,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 429 [2023-08-31 23:54:24,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 108 transitions, 855 flow. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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) [2023-08-31 23:54:24,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:24,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 429 [2023-08-31 23:54:24,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:26,075 INFO L130 PetriNetUnfolder]: 3028/5292 cut-off events. [2023-08-31 23:54:26,076 INFO L131 PetriNetUnfolder]: For 15939/15986 co-relation queries the response was YES. [2023-08-31 23:54:26,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20716 conditions, 5292 events. 3028/5292 cut-off events. For 15939/15986 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 35541 event pairs, 1466 based on Foata normal form. 0/4928 useless extension candidates. Maximal degree in co-relation 20696. Up to 4051 conditions per place. [2023-08-31 23:54:26,093 INFO L137 encePairwiseOnDemand]: 421/429 looper letters, 99 selfloop transitions, 7 changer transitions 0/125 dead transitions. [2023-08-31 23:54:26,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 125 transitions, 1146 flow [2023-08-31 23:54:26,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:54:26,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:54:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2023-08-31 23:54:26,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4553224553224553 [2023-08-31 23:54:26,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2023-08-31 23:54:26,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2023-08-31 23:54:26,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:26,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2023-08-31 23:54:26,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 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) [2023-08-31 23:54:26,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:54:26,099 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:54:26,099 INFO L175 Difference]: Start difference. First operand has 97 places, 108 transitions, 855 flow. Second operand 3 states and 586 transitions. [2023-08-31 23:54:26,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 125 transitions, 1146 flow [2023-08-31 23:54:26,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 125 transitions, 1118 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:54:26,124 INFO L231 Difference]: Finished difference. Result has 97 places, 114 transitions, 907 flow [2023-08-31 23:54:26,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=907, PETRI_PLACES=97, PETRI_TRANSITIONS=114} [2023-08-31 23:54:26,124 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2023-08-31 23:54:26,124 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 114 transitions, 907 flow [2023-08-31 23:54:26,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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) [2023-08-31 23:54:26,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:26,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:54:26,157 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 (19)] Forceful destruction successful, exit code 0 [2023-08-31 23:54:26,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2023-08-31 23:54:26,336 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:54:26,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:26,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1086487809, now seen corresponding path program 1 times [2023-08-31 23:54:26,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:26,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093528159] [2023-08-31 23:54:26,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:26,337 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 [2023-08-31 23:54:26,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:26,339 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-08-31 23:54:26,357 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 (20)] Waiting until timeout for monitored process [2023-08-31 23:54:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:26,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-31 23:54:26,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:26,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:54:26,602 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 12 treesize of output 14 [2023-08-31 23:54:26,702 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-31 23:54:26,702 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 12 treesize of output 14 [2023-08-31 23:54:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:26,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:26,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:26,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093528159] [2023-08-31 23:54:26,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093528159] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:26,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:26,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:54:26,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136510879] [2023-08-31 23:54:26,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:26,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:54:26,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:26,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:54:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:54:27,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 429 [2023-08-31 23:54:27,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 114 transitions, 907 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:54:27,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:27,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 429 [2023-08-31 23:54:27,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:28,172 INFO L130 PetriNetUnfolder]: 2360/4407 cut-off events. [2023-08-31 23:54:28,172 INFO L131 PetriNetUnfolder]: For 13165/13429 co-relation queries the response was YES. [2023-08-31 23:54:28,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16727 conditions, 4407 events. 2360/4407 cut-off events. For 13165/13429 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 32378 event pairs, 1267 based on Foata normal form. 11/4033 useless extension candidates. Maximal degree in co-relation 16706. Up to 2733 conditions per place. [2023-08-31 23:54:28,192 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 61 selfloop transitions, 1 changer transitions 0/113 dead transitions. [2023-08-31 23:54:28,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 113 transitions, 1029 flow [2023-08-31 23:54:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:54:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:54:28,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-08-31 23:54:28,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2023-08-31 23:54:28,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-08-31 23:54:28,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-08-31 23:54:28,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:28,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-08-31 23:54:28,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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) [2023-08-31 23:54:28,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:54:28,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:54:28,199 INFO L175 Difference]: Start difference. First operand has 97 places, 114 transitions, 907 flow. Second operand 3 states and 598 transitions. [2023-08-31 23:54:28,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 113 transitions, 1029 flow [2023-08-31 23:54:28,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 113 transitions, 999 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-31 23:54:28,219 INFO L231 Difference]: Finished difference. Result has 96 places, 113 transitions, 877 flow [2023-08-31 23:54:28,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=877, PETRI_PLACES=96, PETRI_TRANSITIONS=113} [2023-08-31 23:54:28,220 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 2 predicate places. [2023-08-31 23:54:28,220 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 113 transitions, 877 flow [2023-08-31 23:54:28,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:54:28,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:28,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:54:28,231 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 (20)] Forceful destruction successful, exit code 0 [2023-08-31 23:54:28,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 [2023-08-31 23:54:28,431 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:54:28,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:28,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1086487626, now seen corresponding path program 1 times [2023-08-31 23:54:28,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:28,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860926545] [2023-08-31 23:54:28,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:28,431 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 [2023-08-31 23:54:28,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:28,432 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-08-31 23:54:28,434 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 (21)] Waiting until timeout for monitored process [2023-08-31 23:54:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:28,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 23:54:28,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:28,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:54:28,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:54:28,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:54:28,695 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:54:28,695 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:54:28,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-08-31 23:54:28,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:28,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:28,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:28,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860926545] [2023-08-31 23:54:28,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860926545] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:28,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:28,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:54:28,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768982914] [2023-08-31 23:54:28,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:28,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:54:28,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:28,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:54:28,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:54:29,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 429 [2023-08-31 23:54:29,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 113 transitions, 877 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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) [2023-08-31 23:54:29,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:29,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 429 [2023-08-31 23:54:29,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:30,908 INFO L130 PetriNetUnfolder]: 3223/5649 cut-off events. [2023-08-31 23:54:30,908 INFO L131 PetriNetUnfolder]: For 16556/16603 co-relation queries the response was YES. [2023-08-31 23:54:30,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22360 conditions, 5649 events. 3223/5649 cut-off events. For 16556/16603 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 38219 event pairs, 1530 based on Foata normal form. 0/5286 useless extension candidates. Maximal degree in co-relation 22339. Up to 4187 conditions per place. [2023-08-31 23:54:30,928 INFO L137 encePairwiseOnDemand]: 420/429 looper letters, 101 selfloop transitions, 13 changer transitions 0/133 dead transitions. [2023-08-31 23:54:30,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 133 transitions, 1218 flow [2023-08-31 23:54:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:54:30,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:54:30,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2023-08-31 23:54:30,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45376845376845376 [2023-08-31 23:54:30,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2023-08-31 23:54:30,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2023-08-31 23:54:30,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:30,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2023-08-31 23:54:30,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 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) [2023-08-31 23:54:30,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:54:30,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:54:30,945 INFO L175 Difference]: Start difference. First operand has 96 places, 113 transitions, 877 flow. Second operand 3 states and 584 transitions. [2023-08-31 23:54:30,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 133 transitions, 1218 flow [2023-08-31 23:54:30,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 133 transitions, 1217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:54:30,962 INFO L231 Difference]: Finished difference. Result has 99 places, 124 transitions, 1024 flow [2023-08-31 23:54:30,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1024, PETRI_PLACES=99, PETRI_TRANSITIONS=124} [2023-08-31 23:54:30,968 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2023-08-31 23:54:30,968 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 124 transitions, 1024 flow [2023-08-31 23:54:30,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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) [2023-08-31 23:54:30,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:30,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:54:30,981 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 (21)] Forceful destruction successful, exit code 0 [2023-08-31 23:54:31,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2023-08-31 23:54:31,179 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:54:31,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:31,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1086487808, now seen corresponding path program 1 times [2023-08-31 23:54:31,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:31,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221807610] [2023-08-31 23:54:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:31,180 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 [2023-08-31 23:54:31,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:31,181 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-08-31 23:54:31,183 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 (22)] Waiting until timeout for monitored process [2023-08-31 23:54:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:31,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 23:54:31,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:31,453 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 23:54:31,454 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 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-31 23:54:31,483 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-31 23:54:31,483 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 14 treesize of output 20 [2023-08-31 23:54:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:31,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:31,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:31,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221807610] [2023-08-31 23:54:31,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221807610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:31,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:31,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:54:31,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275158258] [2023-08-31 23:54:31,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:31,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:54:31,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:31,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:54:31,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:54:31,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 429 [2023-08-31 23:54:31,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 124 transitions, 1024 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 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) [2023-08-31 23:54:31,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:31,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 429 [2023-08-31 23:54:31,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:32,688 INFO L130 PetriNetUnfolder]: 2599/4793 cut-off events. [2023-08-31 23:54:32,688 INFO L131 PetriNetUnfolder]: For 15519/15866 co-relation queries the response was YES. [2023-08-31 23:54:32,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18844 conditions, 4793 events. 2599/4793 cut-off events. For 15519/15866 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 34755 event pairs, 1224 based on Foata normal form. 14/4463 useless extension candidates. Maximal degree in co-relation 18822. Up to 2193 conditions per place. [2023-08-31 23:54:32,705 INFO L137 encePairwiseOnDemand]: 422/429 looper letters, 55 selfloop transitions, 15 changer transitions 0/129 dead transitions. [2023-08-31 23:54:32,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 129 transitions, 1180 flow [2023-08-31 23:54:32,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:54:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:54:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 604 transitions. [2023-08-31 23:54:32,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693084693084693 [2023-08-31 23:54:32,707 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 604 transitions. [2023-08-31 23:54:32,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 604 transitions. [2023-08-31 23:54:32,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:32,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 604 transitions. [2023-08-31 23:54:32,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 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) [2023-08-31 23:54:32,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:54:32,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:54:32,710 INFO L175 Difference]: Start difference. First operand has 99 places, 124 transitions, 1024 flow. Second operand 3 states and 604 transitions. [2023-08-31 23:54:32,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 129 transitions, 1180 flow [2023-08-31 23:54:32,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 129 transitions, 1140 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-31 23:54:32,727 INFO L231 Difference]: Finished difference. Result has 98 places, 122 transitions, 1004 flow [2023-08-31 23:54:32,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1004, PETRI_PLACES=98, PETRI_TRANSITIONS=122} [2023-08-31 23:54:32,728 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 4 predicate places. [2023-08-31 23:54:32,728 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 122 transitions, 1004 flow [2023-08-31 23:54:32,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 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) [2023-08-31 23:54:32,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:32,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:54:32,739 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 (22)] Forceful destruction successful, exit code 0 [2023-08-31 23:54:32,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2023-08-31 23:54:32,939 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:54:32,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:32,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1690246598, now seen corresponding path program 1 times [2023-08-31 23:54:32,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:32,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748498671] [2023-08-31 23:54:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:32,940 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 [2023-08-31 23:54:32,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:32,941 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-08-31 23:54:32,943 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 (23)] Waiting until timeout for monitored process [2023-08-31 23:54:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:33,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-31 23:54:33,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:33,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:33,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:33,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748498671] [2023-08-31 23:54:33,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748498671] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:33,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:33,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:54:33,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168110539] [2023-08-31 23:54:33,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:33,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:54:33,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:33,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:54:33,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:54:33,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 429 [2023-08-31 23:54:33,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 122 transitions, 1004 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2023-08-31 23:54:33,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:33,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 429 [2023-08-31 23:54:33,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:34,508 INFO L130 PetriNetUnfolder]: 742/1444 cut-off events. [2023-08-31 23:54:34,508 INFO L131 PetriNetUnfolder]: For 2456/2581 co-relation queries the response was YES. [2023-08-31 23:54:34,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4936 conditions, 1444 events. 742/1444 cut-off events. For 2456/2581 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8591 event pairs, 197 based on Foata normal form. 20/1249 useless extension candidates. Maximal degree in co-relation 4914. Up to 889 conditions per place. [2023-08-31 23:54:34,514 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 42 selfloop transitions, 1 changer transitions 1/69 dead transitions. [2023-08-31 23:54:34,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 69 transitions, 536 flow [2023-08-31 23:54:34,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:54:34,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:54:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-08-31 23:54:34,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2023-08-31 23:54:34,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-08-31 23:54:34,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-08-31 23:54:34,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:34,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-08-31 23:54:34,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 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) [2023-08-31 23:54:34,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:54:34,518 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 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) [2023-08-31 23:54:34,518 INFO L175 Difference]: Start difference. First operand has 98 places, 122 transitions, 1004 flow. Second operand 3 states and 594 transitions. [2023-08-31 23:54:34,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 69 transitions, 536 flow [2023-08-31 23:54:34,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 384 flow, removed 28 selfloop flow, removed 20 redundant places. [2023-08-31 23:54:34,521 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 274 flow [2023-08-31 23:54:34,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-08-31 23:54:34,522 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -27 predicate places. [2023-08-31 23:54:34,522 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 274 flow [2023-08-31 23:54:34,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2023-08-31 23:54:34,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:34,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:54:34,533 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 (23)] Forceful destruction successful, exit code 0 [2023-08-31 23:54:34,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2023-08-31 23:54:34,733 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-31 23:54:34,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:34,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1706628655, now seen corresponding path program 1 times [2023-08-31 23:54:34,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:34,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643069882] [2023-08-31 23:54:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:34,734 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 [2023-08-31 23:54:34,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:34,735 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-08-31 23:54:34,736 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 (24)] Waiting until timeout for monitored process [2023-08-31 23:54:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:54:35,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:54:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:54:35,164 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-31 23:54:35,164 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:54:35,165 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (62 of 63 remaining) [2023-08-31 23:54:35,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (61 of 63 remaining) [2023-08-31 23:54:35,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 63 remaining) [2023-08-31 23:54:35,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 63 remaining) [2023-08-31 23:54:35,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 63 remaining) [2023-08-31 23:54:35,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 63 remaining) [2023-08-31 23:54:35,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 63 remaining) [2023-08-31 23:54:35,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 63 remaining) [2023-08-31 23:54:35,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 63 remaining) [2023-08-31 23:54:35,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 63 remaining) [2023-08-31 23:54:35,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 63 remaining) [2023-08-31 23:54:35,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 63 remaining) [2023-08-31 23:54:35,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (38 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (35 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 63 remaining) [2023-08-31 23:54:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_LEAK (26 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (23 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK (20 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 63 remaining) [2023-08-31 23:54:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 63 remaining) [2023-08-31 23:54:35,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 63 remaining) [2023-08-31 23:54:35,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 63 remaining) [2023-08-31 23:54:35,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 63 remaining) [2023-08-31 23:54:35,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 63 remaining) [2023-08-31 23:54:35,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 63 remaining) [2023-08-31 23:54:35,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 63 remaining) [2023-08-31 23:54:35,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 63 remaining) [2023-08-31 23:54:35,186 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 (24)] Forceful destruction successful, exit code 0 [2023-08-31 23:54:35,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-08-31 23:54:35,373 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:54:35,378 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:54:35,381 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:54:35,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:54:35 BasicIcfg [2023-08-31 23:54:35,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:54:35,409 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:54:35,409 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:54:35,409 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:54:35,409 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:46:26" (3/4) ... [2023-08-31 23:54:35,411 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-31 23:54:35,411 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:54:35,411 INFO L158 Benchmark]: Toolchain (without parser) took 490539.10ms. Allocated memory was 56.6MB in the beginning and 557.8MB in the end (delta: 501.2MB). Free memory was 31.8MB in the beginning and 442.4MB in the end (delta: -410.5MB). Peak memory consumption was 92.5MB. Max. memory is 16.1GB. [2023-08-31 23:54:35,411 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 46.1MB. Free memory was 24.4MB in the beginning and 24.4MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:54:35,412 INFO L158 Benchmark]: CACSL2BoogieTranslator took 880.77ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 31.7MB in the beginning and 36.7MB in the end (delta: -5.0MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2023-08-31 23:54:35,412 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.11ms. Allocated memory is still 69.2MB. Free memory was 36.7MB in the beginning and 33.2MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 23:54:35,412 INFO L158 Benchmark]: Boogie Preprocessor took 49.39ms. Allocated memory is still 69.2MB. Free memory was 33.2MB in the beginning and 29.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 23:54:35,412 INFO L158 Benchmark]: RCFGBuilder took 808.22ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 29.6MB in the beginning and 34.3MB in the end (delta: -4.7MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2023-08-31 23:54:35,412 INFO L158 Benchmark]: TraceAbstraction took 488742.19ms. Allocated memory was 86.0MB in the beginning and 557.8MB in the end (delta: 471.9MB). Free memory was 56.0MB in the beginning and 442.4MB in the end (delta: -386.3MB). Peak memory consumption was 399.5MB. Max. memory is 16.1GB. [2023-08-31 23:54:35,412 INFO L158 Benchmark]: Witness Printer took 2.03ms. Allocated memory is still 557.8MB. Free memory is still 442.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:54:35,417 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 46.1MB. Free memory was 24.4MB in the beginning and 24.4MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 880.77ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 31.7MB in the beginning and 36.7MB in the end (delta: -5.0MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.11ms. Allocated memory is still 69.2MB. Free memory was 36.7MB in the beginning and 33.2MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.39ms. Allocated memory is still 69.2MB. Free memory was 33.2MB in the beginning and 29.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 808.22ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 29.6MB in the beginning and 34.3MB in the end (delta: -4.7MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * TraceAbstraction took 488742.19ms. Allocated memory was 86.0MB in the beginning and 557.8MB in the end (delta: 471.9MB). Free memory was 56.0MB in the beginning and 442.4MB in the end (delta: -386.3MB). Peak memory consumption was 399.5MB. Max. memory is 16.1GB. * Witness Printer took 2.03ms. Allocated memory is still 557.8MB. Free memory is still 442.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 428.5s, 207 PlacesBefore, 94 PlacesAfterwards, 207 TransitionsBefore, 91 TransitionsAfterwards, 6612 CoEnabledTransitionPairs, 7 FixpointIterations, 108 TrivialSequentialCompositions, 95 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 220 TotalNumberOfCompositions, 33684 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10574, independent: 9865, independent conditional: 0, independent unconditional: 9865, dependent: 709, dependent conditional: 0, dependent unconditional: 709, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3768, independent: 3647, independent conditional: 0, independent unconditional: 3647, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10574, independent: 6218, independent conditional: 0, independent unconditional: 6218, dependent: 588, dependent conditional: 0, dependent unconditional: 588, unknown: 3768, unknown conditional: 0, unknown unconditional: 3768] , Statistics on independence cache: Total cache size (in pairs): 645, Positive cache size: 592, Positive conditional cache size: 0, Positive unconditional cache size: 592, Negative cache size: 53, Negative conditional cache size: 0, Negative unconditional cache size: 53, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1675. Possible FailurePath: [L1676] 0 pthread_t t1,t2; [L1745] CALL, EXPR 0 my_drv_init() [L1739] 0 return 0; [L1745] RET, EXPR 0 my_drv_init() [L1745] 0 int ret = my_drv_init(); [L1746] COND TRUE 0 ret==0 [L1747] 0 int probe_ret; [L1748] 0 struct my_data data; [L1749] CALL, EXPR 0 my_drv_probe(&data) [L1706] 0 struct device *d = &data->dev; [L1708] 0 data->shared.a = 0 [L1709] 0 data->shared.b = 0 [L1710] 0 int res = __VERIFIER_nondet_int(); [L1711] COND FALSE 0 !(\read(res)) [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={7:24}, d={7:24}, data={7:0}, data={7:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=0, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, d={7:24}, data={7:0}, data={7:0}, data={7:0}, dev={7:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=1, res=0, t1={3:0}, t2={4:0}] [L1715] 0 return 0; [L1749] RET, EXPR 0 my_drv_probe(&data) [L1749] 0 probe_ret = my_drv_probe(&data) VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, data={7:0}, dev={7:24}, my_drv_probe(&data)=0, probe_ret=0, ret=0, t1={3:0}, t2={4:0}] [L1750] COND TRUE 0 probe_ret==0 [L1751] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, data={7:0}, data={7:0}, dev={7:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1723] 0 data->shared.a = 3 VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, data={7:0}, data={7:0}, dev={7:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1694] 1 data->shared.a = 1 VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, dev={7:24}, t1={3:0}, t2={4:0}] [L1726] 0 data->shared.b = 3 VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, data={7:0}, data={7:0}, dev={7:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1729] EXPR 0 data->shared.a [L1729] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, __mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, dev={7:24}, expression=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1744]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 225 locations, 63 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 488.6s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 49.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 428.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4807 SdHoareTripleChecker+Valid, 42.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2791 mSDsluCounter, 442 SdHoareTripleChecker+Invalid, 40.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 173 IncrementalHoareTripleChecker+Unchecked, 217 mSDsCounter, 222 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7135 IncrementalHoareTripleChecker+Invalid, 7530 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 222 mSolverCounterUnsat, 225 mSDtfsCounter, 7135 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1024occurred in iteration=20, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 111 ConstructedInterpolants, 7 QuantifiedInterpolants, 1317 SizeOfPredicates, 100 NumberOfNonLiveVariables, 3316 ConjunctsInSsa, 232 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-31 23:54:35,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample