./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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-3_2-container_of-global.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 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:25:39,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:25:39,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:25:39,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:25:39,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:25:39,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:25:39,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:25:39,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:25:39,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:25:39,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:25:39,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:25:39,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:25:39,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:25:39,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:25:39,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:25:39,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:25:39,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:25:39,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:25:39,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:25:39,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:25:39,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:25:39,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:25:39,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:25:39,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:25:39,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:25:39,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:25:39,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:25:39,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:25:39,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:25:39,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:25:39,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:25:39,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:25:39,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:25:39,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:25:39,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:25:39,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:25:39,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:25:39,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:25:39,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:25:39,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:25:39,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:25:39,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:25:39,227 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:25:39,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:25:39,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:25:39,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:25:39,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:25:39,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:25:39,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:25:39,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:25:39,231 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:25:39,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:25:39,232 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:25:39,232 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:25:39,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:25:39,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:25:39,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:25:39,232 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:25:39,233 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:25:39,233 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:25:39,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:25:39,233 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:25:39,233 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:25:39,233 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:25:39,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:25:39,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:25:39,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:25:39,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:25:39,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:25:39,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:25:39,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:25:39,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:25:39,235 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:25:39,235 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:25:39,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:25:39,236 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:25:39,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:25:39,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:25:39,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:25:39,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:25:39,576 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:25:39,577 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:25:39,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2023-08-30 03:25:40,731 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:25:41,093 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:25:41,094 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2023-08-30 03:25:41,119 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26bb2b4fd/87628911305e4704a9c7708492a63c36/FLAG63503dac2 [2023-08-30 03:25:41,142 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26bb2b4fd/87628911305e4704a9c7708492a63c36 [2023-08-30 03:25:41,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:25:41,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:25:41,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:25:41,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:25:41,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:25:41,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:25:41" (1/1) ... [2023-08-30 03:25:41,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be83187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:41, skipping insertion in model container [2023-08-30 03:25:41,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:25:41" (1/1) ... [2023-08-30 03:25:41,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:25:41,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:25:41,358 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 03:25:41,783 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-3_2-container_of-global.i[75009,75022] [2023-08-30 03:25:41,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:25:41,839 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-30 03:25:41,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d01a745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:41, skipping insertion in model container [2023-08-30 03:25:41,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:25:41,841 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 03:25:41,843 INFO L158 Benchmark]: Toolchain (without parser) took 696.18ms. Allocated memory is still 71.3MB. Free memory was 45.1MB in the beginning and 46.7MB in the end (delta: -1.6MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2023-08-30 03:25:41,844 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 71.3MB. Free memory is still 48.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:25:41,844 INFO L158 Benchmark]: CACSL2BoogieTranslator took 692.69ms. Allocated memory is still 71.3MB. Free memory was 44.9MB in the beginning and 46.7MB in the end (delta: -1.7MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2023-08-30 03:25:41,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 71.3MB. Free memory is still 48.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 692.69ms. Allocated memory is still 71.3MB. Free memory was 44.9MB in the beginning and 46.7MB in the end (delta: -1.7MB). Peak memory consumption was 17.9MB. 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-3_2-container_of-global.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 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:25:43,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:25:43,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:25:43,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:25:43,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:25:43,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:25:43,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:25:43,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:25:43,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:25:43,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:25:43,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:25:43,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:25:43,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:25:43,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:25:43,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:25:43,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:25:43,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:25:43,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:25:43,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:25:43,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:25:43,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:25:43,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:25:43,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:25:43,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:25:43,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:25:43,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:25:43,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:25:43,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:25:43,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:25:43,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:25:43,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:25:43,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:25:43,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:25:43,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:25:43,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:25:43,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:25:43,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:25:43,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:25:43,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:25:43,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:25:43,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:25:43,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 03:25:43,741 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:25:43,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:25:43,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:25:43,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:25:43,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:25:43,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:25:43,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:25:43,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:25:43,745 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:25:43,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:25:43,746 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:25:43,746 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:25:43,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:25:43,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:25:43,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:25:43,747 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:25:43,748 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:25:43,748 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:25:43,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:25:43,748 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:25:43,749 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 03:25:43,749 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 03:25:43,749 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:25:43,749 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:25:43,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:25:43,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:25:43,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:25:43,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:25:43,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:25:43,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:25:43,751 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 03:25:43,751 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 03:25:43,752 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:25:43,752 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:25:43,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:25:43,752 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 03:25:43,753 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:25:43,753 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:25:44,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:25:44,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:25:44,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:25:44,122 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:25:44,122 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:25:44,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2023-08-30 03:25:45,287 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:25:45,690 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:25:45,691 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2023-08-30 03:25:45,714 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/990eb334f/fad41eed524c445585f69422038bd981/FLAG4a5cbd73c [2023-08-30 03:25:45,729 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/990eb334f/fad41eed524c445585f69422038bd981 [2023-08-30 03:25:45,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:25:45,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:25:45,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:25:45,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:25:45,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:25:45,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:25:45" (1/1) ... [2023-08-30 03:25:45,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1704739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:45, skipping insertion in model container [2023-08-30 03:25:45,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:25:45" (1/1) ... [2023-08-30 03:25:45,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:25:45,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:25:45,924 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 03:25:46,521 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-3_2-container_of-global.i[75009,75022] [2023-08-30 03:25:46,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:25:46,587 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 03:25:46,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:25:46,609 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 03:25:46,645 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-3_2-container_of-global.i[75009,75022] [2023-08-30 03:25:46,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:25:46,668 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:25:46,676 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 03:25:46,707 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-3_2-container_of-global.i[75009,75022] [2023-08-30 03:25:46,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:25:46,851 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:25:46,852 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:25:46,852 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:25:46,858 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:25:46,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:46 WrapperNode [2023-08-30 03:25:46,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:25:46,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:25:46,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:25:46,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:25:46,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:46" (1/1) ... [2023-08-30 03:25:46,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:46" (1/1) ... [2023-08-30 03:25:46,939 INFO L138 Inliner]: procedures = 472, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2023-08-30 03:25:46,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:25:46,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:25:46,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:25:46,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:25:46,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:46" (1/1) ... [2023-08-30 03:25:46,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:46" (1/1) ... [2023-08-30 03:25:46,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:46" (1/1) ... [2023-08-30 03:25:46,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:46" (1/1) ... [2023-08-30 03:25:46,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:46" (1/1) ... [2023-08-30 03:25:47,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:46" (1/1) ... [2023-08-30 03:25:47,012 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:46" (1/1) ... [2023-08-30 03:25:47,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:46" (1/1) ... [2023-08-30 03:25:47,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:25:47,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:25:47,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:25:47,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:25:47,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:46" (1/1) ... [2023-08-30 03:25:47,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:25:47,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:25:47,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 03:25:47,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 03:25:47,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 03:25:47,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:25:47,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 03:25:47,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-30 03:25:47,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 03:25:47,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:25:47,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 03:25:47,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:25:47,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:25:47,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 03:25:47,107 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-30 03:25:47,107 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-30 03:25:47,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:25:47,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 03:25:47,109 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 03:25:47,470 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:25:47,474 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:25:47,937 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:25:47,954 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:25:47,954 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:25:47,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:25:47 BoogieIcfgContainer [2023-08-30 03:25:47,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:25:47,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:25:47,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:25:47,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:25:47,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:25:45" (1/3) ... [2023-08-30 03:25:47,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a22112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:25:47, skipping insertion in model container [2023-08-30 03:25:47,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:25:46" (2/3) ... [2023-08-30 03:25:47,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a22112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:25:47, skipping insertion in model container [2023-08-30 03:25:47,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:25:47" (3/3) ... [2023-08-30 03:25:47,964 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2023-08-30 03:25:47,979 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:25:47,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-08-30 03:25:47,980 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:25:48,056 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 03:25:48,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 212 transitions, 440 flow [2023-08-30 03:25:48,155 INFO L130 PetriNetUnfolder]: 10/262 cut-off events. [2023-08-30 03:25:48,155 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 03:25:48,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 262 events. 10/262 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 623 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 151. Up to 4 conditions per place. [2023-08-30 03:25:48,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 212 transitions, 440 flow [2023-08-30 03:25:48,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 210 transitions, 432 flow [2023-08-30 03:25:48,171 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:25:48,178 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 210 transitions, 432 flow [2023-08-30 03:25:48,181 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 210 transitions, 432 flow [2023-08-30 03:25:48,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 210 transitions, 432 flow [2023-08-30 03:25:48,224 INFO L130 PetriNetUnfolder]: 10/262 cut-off events. [2023-08-30 03:25:48,224 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 03:25:48,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 262 events. 10/262 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 622 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 151. Up to 4 conditions per place. [2023-08-30 03:25:48,228 INFO L119 LiptonReduction]: Number of co-enabled transitions 4260 [2023-08-30 03:27:12,752 WARN L222 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 164 DAG size of output: 143 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:27:27,997 WARN L222 SmtUtils]: Spent 11.52s on a formula simplification. DAG size of input: 170 DAG size of output: 149 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:27:36,196 WARN L222 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 149 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:27:43,924 WARN L222 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 178 DAG size of output: 157 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:27:55,134 WARN L222 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 184 DAG size of output: 163 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:28:15,691 WARN L222 SmtUtils]: Spent 9.72s on a formula simplification. DAG size of input: 179 DAG size of output: 158 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:29:24,422 WARN L222 SmtUtils]: Spent 1.07m on a formula simplification. DAG size of input: 221 DAG size of output: 200 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:29:52,947 WARN L222 SmtUtils]: Spent 28.52s on a formula simplification that was a NOOP. DAG size: 193 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:31:15,584 WARN L222 SmtUtils]: Spent 1.38m on a formula simplification. DAG size of input: 227 DAG size of output: 206 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:31:45,982 WARN L222 SmtUtils]: Spent 30.40s on a formula simplification that was a NOOP. DAG size: 199 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:31:59,637 WARN L222 SmtUtils]: Spent 13.63s on a formula simplification that was a NOOP. DAG size: 224 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:32:14,281 WARN L222 SmtUtils]: Spent 14.64s on a formula simplification that was a NOOP. DAG size: 224 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:32:27,684 WARN L222 SmtUtils]: Spent 13.40s on a formula simplification that was a NOOP. DAG size: 230 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:32:40,573 WARN L222 SmtUtils]: Spent 12.89s on a formula simplification that was a NOOP. DAG size: 230 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:34:47,687 WARN L222 SmtUtils]: Spent 2.12m on a formula simplification. DAG size of input: 266 DAG size of output: 259 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:35:47,697 WARN L222 SmtUtils]: Spent 1.00m on a formula simplification that was a NOOP. DAG size: 251 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:37:56,789 WARN L222 SmtUtils]: Spent 2.15m on a formula simplification. DAG size of input: 272 DAG size of output: 265 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:39:03,180 WARN L222 SmtUtils]: Spent 1.11m on a formula simplification that was a NOOP. DAG size: 257 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:39:03,283 INFO L134 LiptonReduction]: Checked pairs total: 17410 [2023-08-30 03:39:03,283 INFO L136 LiptonReduction]: Total number of compositions: 266 [2023-08-30 03:39:03,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:39:03,300 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;@74f29678, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:39:03,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-08-30 03:39:03,301 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 03:39:03,302 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:39:03,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:03,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:39:03,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:03,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:03,307 INFO L85 PathProgramCache]: Analyzing trace with hash 762, now seen corresponding path program 1 times [2023-08-30 03:39:03,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:03,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342583989] [2023-08-30 03:39:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:03,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:03,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:03,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:39:03,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-30 03:39:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:03,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-30 03:39:03,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:03,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:03,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:03,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342583989] [2023-08-30 03:39:03,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342583989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:03,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:03,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:39:03,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704173222] [2023-08-30 03:39:03,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:03,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:39:03,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:03,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:39:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:39:03,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 478 [2023-08-30 03:39:03,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 194.5) internal successors, (389), 2 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:03,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:03,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 478 [2023-08-30 03:39:03,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:05,385 INFO L130 PetriNetUnfolder]: 1026/2094 cut-off events. [2023-08-30 03:39:05,385 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 03:39:05,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3828 conditions, 2094 events. 1026/2094 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 14318 event pairs, 1025 based on Foata normal form. 0/1179 useless extension candidates. Maximal degree in co-relation 3652. Up to 1710 conditions per place. [2023-08-30 03:39:05,407 INFO L137 encePairwiseOnDemand]: 460/478 looper letters, 44 selfloop transitions, 0 changer transitions 0/62 dead transitions. [2023-08-30 03:39:05,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 62 transitions, 224 flow [2023-08-30 03:39:05,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:39:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:39:05,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 450 transitions. [2023-08-30 03:39:05,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707112970711297 [2023-08-30 03:39:05,435 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 450 transitions. [2023-08-30 03:39:05,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 450 transitions. [2023-08-30 03:39:05,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:05,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 450 transitions. [2023-08-30 03:39:05,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:05,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 478.0) internal successors, (1434), 3 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:05,452 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 478.0) internal successors, (1434), 3 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:05,454 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 172 flow. Second operand 2 states and 450 transitions. [2023-08-30 03:39:05,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 62 transitions, 224 flow [2023-08-30 03:39:05,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:39:05,463 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 128 flow [2023-08-30 03:39:05,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=128, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-08-30 03:39:05,471 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -18 predicate places. [2023-08-30 03:39:05,472 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 128 flow [2023-08-30 03:39:05,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 194.5) internal successors, (389), 2 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:05,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:05,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 03:39:05,492 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 [2023-08-30 03:39:05,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:05,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:05,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:05,684 INFO L85 PathProgramCache]: Analyzing trace with hash 24758, now seen corresponding path program 1 times [2023-08-30 03:39:05,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:05,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250027111] [2023-08-30 03:39:05,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:05,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:05,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:05,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:39:05,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-30 03:39:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:05,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 03:39:05,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:05,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:05,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:05,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250027111] [2023-08-30 03:39:05,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250027111] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:05,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:05,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:39:05,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569725578] [2023-08-30 03:39:05,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:05,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:39:05,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:05,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:39:05,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:39:05,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-08-30 03:39:05,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:05,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:05,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-08-30 03:39:05,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:07,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:39:08,561 INFO L130 PetriNetUnfolder]: 1026/2054 cut-off events. [2023-08-30 03:39:08,561 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 03:39:08,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 2054 events. 1026/2054 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13689 event pairs, 1025 based on Foata normal form. 0/1178 useless extension candidates. Maximal degree in co-relation 3767. Up to 1706 conditions per place. [2023-08-30 03:39:08,578 INFO L137 encePairwiseOnDemand]: 473/478 looper letters, 43 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-30 03:39:08,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 220 flow [2023-08-30 03:39:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:39:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:39:08,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-08-30 03:39:08,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330543933054393 [2023-08-30 03:39:08,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-08-30 03:39:08,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-08-30 03:39:08,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:08,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-08-30 03:39:08,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:08,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:08,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:08,592 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 128 flow. Second operand 3 states and 621 transitions. [2023-08-30 03:39:08,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 220 flow [2023-08-30 03:39:08,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:39:08,594 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 144 flow [2023-08-30 03:39:08,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2023-08-30 03:39:08,595 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -15 predicate places. [2023-08-30 03:39:08,596 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 144 flow [2023-08-30 03:39:08,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:08,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:08,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:39:08,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-30 03:39:08,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:08,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:08,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:08,802 INFO L85 PathProgramCache]: Analyzing trace with hash 764167, now seen corresponding path program 1 times [2023-08-30 03:39:08,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:08,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173125586] [2023-08-30 03:39:08,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:08,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:08,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:08,804 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:39:08,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-30 03:39:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:08,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 03:39:08,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:09,068 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 03:39:09,069 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 [2023-08-30 03:39:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:09,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:09,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:09,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173125586] [2023-08-30 03:39:09,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173125586] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:09,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:09,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:39:09,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468221102] [2023-08-30 03:39:09,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:09,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:39:09,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:09,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:39:09,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:39:09,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 478 [2023-08-30 03:39:09,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 144 flow. Second operand has 3 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) [2023-08-30 03:39:09,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:09,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 478 [2023-08-30 03:39:09,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:11,176 INFO L130 PetriNetUnfolder]: 1016/2041 cut-off events. [2023-08-30 03:39:11,177 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-08-30 03:39:11,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3894 conditions, 2041 events. 1016/2041 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13550 event pairs, 895 based on Foata normal form. 0/1178 useless extension candidates. Maximal degree in co-relation 3889. Up to 1484 conditions per place. [2023-08-30 03:39:11,191 INFO L137 encePairwiseOnDemand]: 467/478 looper letters, 54 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2023-08-30 03:39:11,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 306 flow [2023-08-30 03:39:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:39:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:39:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-08-30 03:39:11,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421199442119944 [2023-08-30 03:39:11,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-08-30 03:39:11,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-08-30 03:39:11,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:11,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-08-30 03:39:11,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:11,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:11,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:11,202 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 144 flow. Second operand 3 states and 634 transitions. [2023-08-30 03:39:11,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 306 flow [2023-08-30 03:39:11,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:39:11,204 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 169 flow [2023-08-30 03:39:11,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-08-30 03:39:11,205 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -15 predicate places. [2023-08-30 03:39:11,205 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 169 flow [2023-08-30 03:39:11,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-30 03:39:11,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:11,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:39:11,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-30 03:39:11,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:11,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:11,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:11,420 INFO L85 PathProgramCache]: Analyzing trace with hash 764168, now seen corresponding path program 1 times [2023-08-30 03:39:11,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:11,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687942732] [2023-08-30 03:39:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:11,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:11,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:11,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:39:11,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-30 03:39:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:11,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 03:39:11,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:11,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:39:11,654 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 [2023-08-30 03:39:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:11,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:11,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:11,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687942732] [2023-08-30 03:39:11,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687942732] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:11,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:11,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:39:11,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756335716] [2023-08-30 03:39:11,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:11,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:39:11,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:11,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:39:11,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:39:12,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-08-30 03:39:12,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:12,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:12,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-08-30 03:39:12,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:13,641 INFO L130 PetriNetUnfolder]: 1006/2015 cut-off events. [2023-08-30 03:39:13,642 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-08-30 03:39:13,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 2015 events. 1006/2015 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13339 event pairs, 1005 based on Foata normal form. 0/1170 useless extension candidates. Maximal degree in co-relation 3929. Up to 1672 conditions per place. [2023-08-30 03:39:13,652 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 40 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-08-30 03:39:13,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 249 flow [2023-08-30 03:39:13,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:39:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:39:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2023-08-30 03:39:13,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42887029288702927 [2023-08-30 03:39:13,657 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2023-08-30 03:39:13,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2023-08-30 03:39:13,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:13,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2023-08-30 03:39:13,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:13,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:13,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:13,663 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 169 flow. Second operand 3 states and 615 transitions. [2023-08-30 03:39:13,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 249 flow [2023-08-30 03:39:13,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:39:13,665 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 160 flow [2023-08-30 03:39:13,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-30 03:39:13,666 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -16 predicate places. [2023-08-30 03:39:13,666 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 160 flow [2023-08-30 03:39:13,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:13,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:13,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:39:13,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-30 03:39:13,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:13,883 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:13,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:13,884 INFO L85 PathProgramCache]: Analyzing trace with hash 764184, now seen corresponding path program 1 times [2023-08-30 03:39:13,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:13,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990418325] [2023-08-30 03:39:13,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:13,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:13,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:13,886 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:39:13,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-30 03:39:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:14,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 03:39:14,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:14,037 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 [2023-08-30 03:39:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:14,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:14,049 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:14,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990418325] [2023-08-30 03:39:14,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990418325] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:14,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:14,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:39:14,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523008914] [2023-08-30 03:39:14,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:14,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:39:14,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:14,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:39:14,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:39:14,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 478 [2023-08-30 03:39:14,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 160 flow. Second operand has 3 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) [2023-08-30 03:39:14,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:14,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 478 [2023-08-30 03:39:14,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:16,285 INFO L130 PetriNetUnfolder]: 747/1578 cut-off events. [2023-08-30 03:39:16,285 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-30 03:39:16,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3027 conditions, 1578 events. 747/1578 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9963 event pairs, 635 based on Foata normal form. 0/1042 useless extension candidates. Maximal degree in co-relation 3021. Up to 1112 conditions per place. [2023-08-30 03:39:16,292 INFO L137 encePairwiseOnDemand]: 466/478 looper letters, 51 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2023-08-30 03:39:16,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 79 transitions, 322 flow [2023-08-30 03:39:16,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:39:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:39:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-08-30 03:39:16,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407252440725244 [2023-08-30 03:39:16,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-08-30 03:39:16,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-08-30 03:39:16,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:16,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-08-30 03:39:16,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:16,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:16,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:16,301 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 160 flow. Second operand 3 states and 632 transitions. [2023-08-30 03:39:16,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 79 transitions, 322 flow [2023-08-30 03:39:16,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 79 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:39:16,303 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 216 flow [2023-08-30 03:39:16,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-08-30 03:39:16,304 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-08-30 03:39:16,305 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 216 flow [2023-08-30 03:39:16,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-30 03:39:16,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:16,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:39:16,314 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 (6)] Ended with exit code 0 [2023-08-30 03:39:16,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:16,509 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:16,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:16,509 INFO L85 PathProgramCache]: Analyzing trace with hash 765980, now seen corresponding path program 1 times [2023-08-30 03:39:16,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:16,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814300989] [2023-08-30 03:39:16,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:16,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:16,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:16,511 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:39:16,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-30 03:39:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:16,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 03:39:16,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:16,644 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 [2023-08-30 03:39:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:16,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:16,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814300989] [2023-08-30 03:39:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814300989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:16,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:16,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:39:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979686029] [2023-08-30 03:39:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:16,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:39:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:39:16,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:39:16,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 478 [2023-08-30 03:39:16,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:16,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:16,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 478 [2023-08-30 03:39:16,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:18,053 INFO L130 PetriNetUnfolder]: 627/1391 cut-off events. [2023-08-30 03:39:18,053 INFO L131 PetriNetUnfolder]: For 306/306 co-relation queries the response was YES. [2023-08-30 03:39:18,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2917 conditions, 1391 events. 627/1391 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9146 event pairs, 384 based on Foata normal form. 26/1153 useless extension candidates. Maximal degree in co-relation 2910. Up to 588 conditions per place. [2023-08-30 03:39:18,061 INFO L137 encePairwiseOnDemand]: 468/478 looper letters, 53 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2023-08-30 03:39:18,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 77 transitions, 368 flow [2023-08-30 03:39:18,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:39:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:39:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2023-08-30 03:39:18,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42677824267782427 [2023-08-30 03:39:18,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2023-08-30 03:39:18,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2023-08-30 03:39:18,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:18,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2023-08-30 03:39:18,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:18,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:18,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:18,071 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 216 flow. Second operand 3 states and 612 transitions. [2023-08-30 03:39:18,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 77 transitions, 368 flow [2023-08-30 03:39:18,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 77 transitions, 348 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:39:18,074 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 225 flow [2023-08-30 03:39:18,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-08-30 03:39:18,075 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-08-30 03:39:18,075 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 225 flow [2023-08-30 03:39:18,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:18,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:18,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:39:18,090 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 [2023-08-30 03:39:18,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:18,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:18,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:18,288 INFO L85 PathProgramCache]: Analyzing trace with hash 765979, now seen corresponding path program 1 times [2023-08-30 03:39:18,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:18,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454845950] [2023-08-30 03:39:18,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:18,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:18,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:18,289 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:39:18,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-30 03:39:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:18,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:39:18,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:18,409 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 [2023-08-30 03:39:18,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:18,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:18,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:18,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454845950] [2023-08-30 03:39:18,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454845950] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:18,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:18,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:39:18,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733426540] [2023-08-30 03:39:18,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:18,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:39:18,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:18,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:39:18,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:39:18,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 478 [2023-08-30 03:39:18,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:18,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:18,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 478 [2023-08-30 03:39:18,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:20,137 INFO L130 PetriNetUnfolder]: 627/1375 cut-off events. [2023-08-30 03:39:20,138 INFO L131 PetriNetUnfolder]: For 339/339 co-relation queries the response was YES. [2023-08-30 03:39:20,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 1375 events. 627/1375 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8776 event pairs, 512 based on Foata normal form. 0/1126 useless extension candidates. Maximal degree in co-relation 3045. Up to 815 conditions per place. [2023-08-30 03:39:20,144 INFO L137 encePairwiseOnDemand]: 471/478 looper letters, 46 selfloop transitions, 7 changer transitions 0/69 dead transitions. [2023-08-30 03:39:20,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 347 flow [2023-08-30 03:39:20,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:39:20,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:39:20,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2023-08-30 03:39:20,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405160390516039 [2023-08-30 03:39:20,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2023-08-30 03:39:20,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2023-08-30 03:39:20,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:20,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2023-08-30 03:39:20,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 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) [2023-08-30 03:39:20,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:20,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:20,154 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 225 flow. Second operand 3 states and 581 transitions. [2023-08-30 03:39:20,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 347 flow [2023-08-30 03:39:20,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:39:20,157 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 218 flow [2023-08-30 03:39:20,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2023-08-30 03:39:20,158 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -14 predicate places. [2023-08-30 03:39:20,158 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 218 flow [2023-08-30 03:39:20,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:20,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:20,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:39:20,177 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 [2023-08-30 03:39:20,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:20,377 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:20,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:20,377 INFO L85 PathProgramCache]: Analyzing trace with hash 764185, now seen corresponding path program 1 times [2023-08-30 03:39:20,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:20,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028744953] [2023-08-30 03:39:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:20,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:20,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:20,379 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:39:20,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-30 03:39:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:20,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 03:39:20,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:20,517 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 [2023-08-30 03:39:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:20,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:20,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:20,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028744953] [2023-08-30 03:39:20,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028744953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:20,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:20,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:39:20,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527215428] [2023-08-30 03:39:20,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:20,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:39:20,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:20,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:39:20,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:39:20,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-08-30 03:39:20,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:20,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:20,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-08-30 03:39:20,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:22,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:39:22,773 INFO L130 PetriNetUnfolder]: 387/890 cut-off events. [2023-08-30 03:39:22,773 INFO L131 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2023-08-30 03:39:22,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1987 conditions, 890 events. 387/890 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5199 event pairs, 278 based on Foata normal form. 98/838 useless extension candidates. Maximal degree in co-relation 1979. Up to 514 conditions per place. [2023-08-30 03:39:22,778 INFO L137 encePairwiseOnDemand]: 472/478 looper letters, 51 selfloop transitions, 4 changer transitions 1/73 dead transitions. [2023-08-30 03:39:22,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 73 transitions, 358 flow [2023-08-30 03:39:22,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:39:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:39:22,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2023-08-30 03:39:22,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43793584379358436 [2023-08-30 03:39:22,784 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2023-08-30 03:39:22,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2023-08-30 03:39:22,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:22,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2023-08-30 03:39:22,786 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) [2023-08-30 03:39:22,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:22,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:22,789 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 218 flow. Second operand 3 states and 628 transitions. [2023-08-30 03:39:22,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 73 transitions, 358 flow [2023-08-30 03:39:22,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:39:22,791 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 220 flow [2023-08-30 03:39:22,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2023-08-30 03:39:22,792 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-08-30 03:39:22,792 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 220 flow [2023-08-30 03:39:22,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:22,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:22,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:39:22,808 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 [2023-08-30 03:39:23,004 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 [2023-08-30 03:39:23,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:23,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:23,005 INFO L85 PathProgramCache]: Analyzing trace with hash 23690237, now seen corresponding path program 1 times [2023-08-30 03:39:23,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:23,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380701417] [2023-08-30 03:39:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:23,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:23,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:23,007 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) [2023-08-30 03:39:23,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-30 03:39:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:23,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 03:39:23,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:23,179 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 [2023-08-30 03:39:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:23,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:23,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:23,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380701417] [2023-08-30 03:39:23,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380701417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:23,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:23,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:39:23,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728321900] [2023-08-30 03:39:23,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:23,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:39:23,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:23,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:39:23,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:39:23,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-08-30 03:39:23,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:23,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:23,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-08-30 03:39:23,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:26,430 INFO L130 PetriNetUnfolder]: 411/923 cut-off events. [2023-08-30 03:39:26,431 INFO L131 PetriNetUnfolder]: For 251/251 co-relation queries the response was YES. [2023-08-30 03:39:26,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2194 conditions, 923 events. 411/923 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5464 event pairs, 102 based on Foata normal form. 0/774 useless extension candidates. Maximal degree in co-relation 2185. Up to 434 conditions per place. [2023-08-30 03:39:26,436 INFO L137 encePairwiseOnDemand]: 470/478 looper letters, 66 selfloop transitions, 10 changer transitions 1/92 dead transitions. [2023-08-30 03:39:26,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 475 flow [2023-08-30 03:39:26,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:39:26,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:39:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 819 transitions. [2023-08-30 03:39:26,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428347280334728 [2023-08-30 03:39:26,441 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 819 transitions. [2023-08-30 03:39:26,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 819 transitions. [2023-08-30 03:39:26,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:26,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 819 transitions. [2023-08-30 03:39:26,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 204.75) internal successors, (819), 4 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:26,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:26,447 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:26,447 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 220 flow. Second operand 4 states and 819 transitions. [2023-08-30 03:39:26,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 475 flow [2023-08-30 03:39:26,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 92 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:39:26,450 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 283 flow [2023-08-30 03:39:26,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-08-30 03:39:26,451 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-08-30 03:39:26,451 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 283 flow [2023-08-30 03:39:26,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:26,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:26,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:39:26,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-30 03:39:26,668 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 [2023-08-30 03:39:26,668 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:26,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:26,668 INFO L85 PathProgramCache]: Analyzing trace with hash 23690236, now seen corresponding path program 1 times [2023-08-30 03:39:26,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:26,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728509425] [2023-08-30 03:39:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:26,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:26,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:26,670 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) [2023-08-30 03:39:26,672 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 [2023-08-30 03:39:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:26,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 03:39:26,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:26,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:26,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:26,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:26,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728509425] [2023-08-30 03:39:26,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728509425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:26,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:26,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:39:26,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124046609] [2023-08-30 03:39:26,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:26,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:39:26,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:26,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:39:26,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:39:27,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 478 [2023-08-30 03:39:27,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:27,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:27,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 478 [2023-08-30 03:39:27,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:29,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:39:30,110 INFO L130 PetriNetUnfolder]: 458/1007 cut-off events. [2023-08-30 03:39:30,111 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2023-08-30 03:39:30,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2579 conditions, 1007 events. 458/1007 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6215 event pairs, 160 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 2568. Up to 537 conditions per place. [2023-08-30 03:39:30,116 INFO L137 encePairwiseOnDemand]: 466/478 looper letters, 57 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2023-08-30 03:39:30,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 475 flow [2023-08-30 03:39:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:39:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:39:30,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-30 03:39:30,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4316596931659693 [2023-08-30 03:39:30,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-30 03:39:30,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-30 03:39:30,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:30,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-30 03:39:30,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:30,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:30,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:30,126 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 283 flow. Second operand 3 states and 619 transitions. [2023-08-30 03:39:30,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 475 flow [2023-08-30 03:39:30,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 84 transitions, 461 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:39:30,130 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 338 flow [2023-08-30 03:39:30,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2023-08-30 03:39:30,131 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2023-08-30 03:39:30,131 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 338 flow [2023-08-30 03:39:30,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:30,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:30,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 03:39:30,146 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 [2023-08-30 03:39:30,343 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 [2023-08-30 03:39:30,344 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:30,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash 736149436, now seen corresponding path program 1 times [2023-08-30 03:39:30,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:30,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494148131] [2023-08-30 03:39:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:30,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:30,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:30,346 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) [2023-08-30 03:39:30,347 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 [2023-08-30 03:39:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:30,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 03:39:30,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:30,597 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 [2023-08-30 03:39:30,679 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 03:39:30,679 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 [2023-08-30 03:39:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:30,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:30,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:30,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494148131] [2023-08-30 03:39:30,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494148131] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:30,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:30,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:39:30,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428748953] [2023-08-30 03:39:30,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:30,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:39:30,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:30,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:39:30,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:39:31,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 478 [2023-08-30 03:39:31,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:31,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:31,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 478 [2023-08-30 03:39:31,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:34,090 INFO L130 PetriNetUnfolder]: 504/1169 cut-off events. [2023-08-30 03:39:34,091 INFO L131 PetriNetUnfolder]: For 1617/1635 co-relation queries the response was YES. [2023-08-30 03:39:34,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3286 conditions, 1169 events. 504/1169 cut-off events. For 1617/1635 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7682 event pairs, 294 based on Foata normal form. 0/985 useless extension candidates. Maximal degree in co-relation 3274. Up to 817 conditions per place. [2023-08-30 03:39:34,096 INFO L137 encePairwiseOnDemand]: 469/478 looper letters, 51 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2023-08-30 03:39:34,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 79 transitions, 516 flow [2023-08-30 03:39:34,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:39:34,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:39:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-08-30 03:39:34,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41143654114365413 [2023-08-30 03:39:34,109 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-08-30 03:39:34,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-08-30 03:39:34,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:34,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-08-30 03:39:34,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:34,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:34,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:34,114 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 338 flow. Second operand 3 states and 590 transitions. [2023-08-30 03:39:34,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 79 transitions, 516 flow [2023-08-30 03:39:34,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:39:34,118 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 414 flow [2023-08-30 03:39:34,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=414, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2023-08-30 03:39:34,119 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2023-08-30 03:39:34,119 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 414 flow [2023-08-30 03:39:34,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:34,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:34,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:39:34,130 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 [2023-08-30 03:39:34,320 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 [2023-08-30 03:39:34,320 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:34,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:34,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1345796653, now seen corresponding path program 1 times [2023-08-30 03:39:34,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:34,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530392148] [2023-08-30 03:39:34,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:34,321 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:34,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:34,322 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) [2023-08-30 03:39:34,323 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 [2023-08-30 03:39:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:34,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 03:39:34,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:34,523 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:39:34,524 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:39:34,524 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:39:34,526 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 [2023-08-30 03:39:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:34,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:34,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:34,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530392148] [2023-08-30 03:39:34,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530392148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:34,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:34,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:39:34,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272369117] [2023-08-30 03:39:34,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:34,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:39:34,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:34,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:39:34,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:39:35,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 478 [2023-08-30 03:39:35,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 414 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) [2023-08-30 03:39:35,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:35,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 478 [2023-08-30 03:39:35,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:37,592 INFO L130 PetriNetUnfolder]: 636/1379 cut-off events. [2023-08-30 03:39:37,592 INFO L131 PetriNetUnfolder]: For 2419/2437 co-relation queries the response was YES. [2023-08-30 03:39:37,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4493 conditions, 1379 events. 636/1379 cut-off events. For 2419/2437 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8884 event pairs, 338 based on Foata normal form. 0/1211 useless extension candidates. Maximal degree in co-relation 4480. Up to 1020 conditions per place. [2023-08-30 03:39:37,599 INFO L137 encePairwiseOnDemand]: 470/478 looper letters, 60 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2023-08-30 03:39:37,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 90 transitions, 670 flow [2023-08-30 03:39:37,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:39:37,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:39:37,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-08-30 03:39:37,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121338912133891 [2023-08-30 03:39:37,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-08-30 03:39:37,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-08-30 03:39:37,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:37,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-08-30 03:39:37,605 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) [2023-08-30 03:39:37,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:37,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:37,607 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 414 flow. Second operand 3 states and 591 transitions. [2023-08-30 03:39:37,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 90 transitions, 670 flow [2023-08-30 03:39:37,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 634 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:39:37,613 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 534 flow [2023-08-30 03:39:37,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2023-08-30 03:39:37,614 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2023-08-30 03:39:37,614 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 534 flow [2023-08-30 03:39:37,614 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) [2023-08-30 03:39:37,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:37,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:39:37,631 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 [2023-08-30 03:39:37,827 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 [2023-08-30 03:39:37,828 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:37,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:37,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1291002750, now seen corresponding path program 1 times [2023-08-30 03:39:37,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:37,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880905076] [2023-08-30 03:39:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:37,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:37,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:37,830 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) [2023-08-30 03:39:37,833 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 [2023-08-30 03:39:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:38,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 03:39:38,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:38,100 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 03:39:38,100 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 [2023-08-30 03:39:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:38,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:38,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:38,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880905076] [2023-08-30 03:39:38,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880905076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:38,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:38,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:39:38,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417601059] [2023-08-30 03:39:38,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:38,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:39:38,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:38,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:39:38,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:39:38,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 478 [2023-08-30 03:39:38,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:38,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:38,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 478 [2023-08-30 03:39:38,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:39,972 INFO L130 PetriNetUnfolder]: 589/1305 cut-off events. [2023-08-30 03:39:39,972 INFO L131 PetriNetUnfolder]: For 2823/2835 co-relation queries the response was YES. [2023-08-30 03:39:39,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 1305 events. 589/1305 cut-off events. For 2823/2835 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8467 event pairs, 323 based on Foata normal form. 0/1153 useless extension candidates. Maximal degree in co-relation 4533. Up to 746 conditions per place. [2023-08-30 03:39:39,979 INFO L137 encePairwiseOnDemand]: 468/478 looper letters, 60 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2023-08-30 03:39:39,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 92 transitions, 718 flow [2023-08-30 03:39:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:39:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:39:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-30 03:39:39,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4316596931659693 [2023-08-30 03:39:39,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-30 03:39:39,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-30 03:39:39,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:39,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-30 03:39:39,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:39,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:39,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:39,987 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 534 flow. Second operand 3 states and 619 transitions. [2023-08-30 03:39:39,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 92 transitions, 718 flow [2023-08-30 03:39:39,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 92 transitions, 704 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:39:39,992 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 532 flow [2023-08-30 03:39:39,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=532, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2023-08-30 03:39:39,992 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2023-08-30 03:39:39,992 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 532 flow [2023-08-30 03:39:39,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:39,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:39,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:39:40,008 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 [2023-08-30 03:39:40,193 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 [2023-08-30 03:39:40,194 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:40,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1291002751, now seen corresponding path program 1 times [2023-08-30 03:39:40,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:40,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896130268] [2023-08-30 03:39:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:40,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:40,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:40,196 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) [2023-08-30 03:39:40,200 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 [2023-08-30 03:39:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:40,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 03:39:40,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:40,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:39:40,474 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 [2023-08-30 03:39:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:40,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:40,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:40,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896130268] [2023-08-30 03:39:40,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896130268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:40,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:40,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:39:40,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963535525] [2023-08-30 03:39:40,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:40,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:39:40,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:40,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:39:40,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:39:40,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-08-30 03:39:40,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:40,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:40,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-08-30 03:39:40,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:41,804 INFO L130 PetriNetUnfolder]: 558/1235 cut-off events. [2023-08-30 03:39:41,804 INFO L131 PetriNetUnfolder]: For 2914/2930 co-relation queries the response was YES. [2023-08-30 03:39:41,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 1235 events. 558/1235 cut-off events. For 2914/2930 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7889 event pairs, 325 based on Foata normal form. 0/1099 useless extension candidates. Maximal degree in co-relation 4226. Up to 998 conditions per place. [2023-08-30 03:39:41,811 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 62 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-30 03:39:41,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 81 transitions, 642 flow [2023-08-30 03:39:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:39:41,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:39:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 03:39:41,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42608089260808923 [2023-08-30 03:39:41,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 03:39:41,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 03:39:41,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:41,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 03:39:41,818 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) [2023-08-30 03:39:41,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:41,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:41,821 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 532 flow. Second operand 3 states and 611 transitions. [2023-08-30 03:39:41,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 81 transitions, 642 flow [2023-08-30 03:39:41,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 612 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:39:41,825 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 488 flow [2023-08-30 03:39:41,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2023-08-30 03:39:41,826 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2023-08-30 03:39:41,826 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 488 flow [2023-08-30 03:39:41,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:41,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:41,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:39:41,842 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 [2023-08-30 03:39:42,033 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 [2023-08-30 03:39:42,033 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:42,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:42,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1291003930, now seen corresponding path program 1 times [2023-08-30 03:39:42,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:42,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963239803] [2023-08-30 03:39:42,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:42,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:42,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:42,036 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) [2023-08-30 03:39:42,039 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 [2023-08-30 03:39:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:42,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 03:39:42,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:42,217 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 [2023-08-30 03:39:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:42,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:42,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:42,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963239803] [2023-08-30 03:39:42,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963239803] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:42,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:42,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:39:42,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026709153] [2023-08-30 03:39:42,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:42,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:39:42,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:39:42,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:39:42,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-08-30 03:39:42,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 488 flow. Second operand has 4 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:42,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:42,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-08-30 03:39:42,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:45,243 INFO L130 PetriNetUnfolder]: 570/1215 cut-off events. [2023-08-30 03:39:45,243 INFO L131 PetriNetUnfolder]: For 2749/2766 co-relation queries the response was YES. [2023-08-30 03:39:45,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4216 conditions, 1215 events. 570/1215 cut-off events. For 2749/2766 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7517 event pairs, 114 based on Foata normal form. 94/1246 useless extension candidates. Maximal degree in co-relation 4202. Up to 768 conditions per place. [2023-08-30 03:39:45,248 INFO L137 encePairwiseOnDemand]: 472/478 looper letters, 90 selfloop transitions, 11 changer transitions 1/117 dead transitions. [2023-08-30 03:39:45,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 117 transitions, 934 flow [2023-08-30 03:39:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:39:45,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:39:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 811 transitions. [2023-08-30 03:39:45,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42416317991631797 [2023-08-30 03:39:45,257 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 811 transitions. [2023-08-30 03:39:45,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 811 transitions. [2023-08-30 03:39:45,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:45,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 811 transitions. [2023-08-30 03:39:45,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:45,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:45,263 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:45,264 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 488 flow. Second operand 4 states and 811 transitions. [2023-08-30 03:39:45,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 117 transitions, 934 flow [2023-08-30 03:39:45,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 932 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:39:45,269 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 557 flow [2023-08-30 03:39:45,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=557, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2023-08-30 03:39:45,270 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -1 predicate places. [2023-08-30 03:39:45,270 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 557 flow [2023-08-30 03:39:45,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:45,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:45,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:39:45,283 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 [2023-08-30 03:39:45,483 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 [2023-08-30 03:39:45,483 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:45,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:45,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1291003929, now seen corresponding path program 1 times [2023-08-30 03:39:45,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:45,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038908854] [2023-08-30 03:39:45,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:45,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:45,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:45,485 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) [2023-08-30 03:39:45,486 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 [2023-08-30 03:39:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:45,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 03:39:45,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:45,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:45,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:45,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038908854] [2023-08-30 03:39:45,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038908854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:45,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:45,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:39:45,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594344938] [2023-08-30 03:39:45,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:45,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:39:45,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:45,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:39:45,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:39:45,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 478 [2023-08-30 03:39:45,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 557 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:45,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:45,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 478 [2023-08-30 03:39:45,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:48,055 INFO L130 PetriNetUnfolder]: 641/1267 cut-off events. [2023-08-30 03:39:48,056 INFO L131 PetriNetUnfolder]: For 3540/3566 co-relation queries the response was YES. [2023-08-30 03:39:48,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4811 conditions, 1267 events. 641/1267 cut-off events. For 3540/3566 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7353 event pairs, 173 based on Foata normal form. 101/1294 useless extension candidates. Maximal degree in co-relation 4795. Up to 755 conditions per place. [2023-08-30 03:39:48,060 INFO L137 encePairwiseOnDemand]: 466/478 looper letters, 80 selfloop transitions, 20 changer transitions 0/115 dead transitions. [2023-08-30 03:39:48,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 115 transitions, 966 flow [2023-08-30 03:39:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:39:48,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:39:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2023-08-30 03:39:48,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42887029288702927 [2023-08-30 03:39:48,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2023-08-30 03:39:48,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2023-08-30 03:39:48,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:48,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2023-08-30 03:39:48,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:48,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:48,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:48,068 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 557 flow. Second operand 3 states and 615 transitions. [2023-08-30 03:39:48,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 115 transitions, 966 flow [2023-08-30 03:39:48,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 115 transitions, 961 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:39:48,074 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 706 flow [2023-08-30 03:39:48,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=706, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2023-08-30 03:39:48,074 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 2 predicate places. [2023-08-30 03:39:48,074 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 706 flow [2023-08-30 03:39:48,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:48,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:48,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:39:48,090 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 [2023-08-30 03:39:48,287 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 [2023-08-30 03:39:48,288 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:48,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:48,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1366380303, now seen corresponding path program 1 times [2023-08-30 03:39:48,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:48,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540991185] [2023-08-30 03:39:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:48,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:48,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:48,290 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) [2023-08-30 03:39:48,293 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 [2023-08-30 03:39:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:48,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 03:39:48,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:48,513 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 [2023-08-30 03:39:48,519 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 [2023-08-30 03:39:48,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:39:48,578 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 [2023-08-30 03:39:48,591 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:39:48,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 03:39:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:48,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:48,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:48,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540991185] [2023-08-30 03:39:48,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540991185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:48,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:48,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:39:48,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443314730] [2023-08-30 03:39:48,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:48,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:39:48,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:48,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:39:48,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:39:49,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 478 [2023-08-30 03:39:49,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 706 flow. Second operand has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:49,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:49,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 478 [2023-08-30 03:39:49,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:50,791 INFO L130 PetriNetUnfolder]: 583/1169 cut-off events. [2023-08-30 03:39:50,791 INFO L131 PetriNetUnfolder]: For 5154/5192 co-relation queries the response was YES. [2023-08-30 03:39:50,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5017 conditions, 1169 events. 583/1169 cut-off events. For 5154/5192 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6570 event pairs, 279 based on Foata normal form. 10/1137 useless extension candidates. Maximal degree in co-relation 5000. Up to 832 conditions per place. [2023-08-30 03:39:50,795 INFO L137 encePairwiseOnDemand]: 466/478 looper letters, 65 selfloop transitions, 19 changer transitions 1/102 dead transitions. [2023-08-30 03:39:50,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 932 flow [2023-08-30 03:39:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:39:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:39:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 810 transitions. [2023-08-30 03:39:50,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236401673640167 [2023-08-30 03:39:50,798 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 810 transitions. [2023-08-30 03:39:50,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 810 transitions. [2023-08-30 03:39:50,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:50,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 810 transitions. [2023-08-30 03:39:50,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.5) internal successors, (810), 4 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:50,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:50,803 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:50,803 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 706 flow. Second operand 4 states and 810 transitions. [2023-08-30 03:39:50,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 932 flow [2023-08-30 03:39:50,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 102 transitions, 883 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:39:50,809 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 691 flow [2023-08-30 03:39:50,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=691, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2023-08-30 03:39:50,810 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 0 predicate places. [2023-08-30 03:39:50,810 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 691 flow [2023-08-30 03:39:50,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:50,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:50,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:39:50,823 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 [2023-08-30 03:39:51,021 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 [2023-08-30 03:39:51,021 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:51,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:51,021 INFO L85 PathProgramCache]: Analyzing trace with hash -432987915, now seen corresponding path program 1 times [2023-08-30 03:39:51,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:51,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463530704] [2023-08-30 03:39:51,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:51,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:51,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:51,024 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) [2023-08-30 03:39:51,024 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 [2023-08-30 03:39:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:51,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 03:39:51,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:51,267 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 [2023-08-30 03:39:51,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:39:51,354 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 [2023-08-30 03:39:51,366 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:39:51,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 03:39:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:51,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:51,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:51,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463530704] [2023-08-30 03:39:51,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463530704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:51,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:51,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:39:51,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574590489] [2023-08-30 03:39:51,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:51,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:39:51,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:51,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:39:51,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:39:52,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 478 [2023-08-30 03:39:52,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 691 flow. Second operand has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:52,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:52,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 478 [2023-08-30 03:39:52,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:54,534 INFO L130 PetriNetUnfolder]: 648/1318 cut-off events. [2023-08-30 03:39:54,534 INFO L131 PetriNetUnfolder]: For 4854/4884 co-relation queries the response was YES. [2023-08-30 03:39:54,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5437 conditions, 1318 events. 648/1318 cut-off events. For 4854/4884 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7849 event pairs, 127 based on Foata normal form. 8/1230 useless extension candidates. Maximal degree in co-relation 5421. Up to 715 conditions per place. [2023-08-30 03:39:54,538 INFO L137 encePairwiseOnDemand]: 463/478 looper letters, 108 selfloop transitions, 25 changer transitions 2/148 dead transitions. [2023-08-30 03:39:54,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 148 transitions, 1328 flow [2023-08-30 03:39:54,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:39:54,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:39:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1351 transitions. [2023-08-30 03:39:54,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40376569037656906 [2023-08-30 03:39:54,542 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1351 transitions. [2023-08-30 03:39:54,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1351 transitions. [2023-08-30 03:39:54,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:54,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1351 transitions. [2023-08-30 03:39:54,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:54,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:54,549 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:54,549 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 691 flow. Second operand 7 states and 1351 transitions. [2023-08-30 03:39:54,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 148 transitions, 1328 flow [2023-08-30 03:39:54,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 148 transitions, 1300 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:39:54,556 INFO L231 Difference]: Finished difference. Result has 87 places, 94 transitions, 805 flow [2023-08-30 03:39:54,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=805, PETRI_PLACES=87, PETRI_TRANSITIONS=94} [2023-08-30 03:39:54,556 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2023-08-30 03:39:54,556 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 94 transitions, 805 flow [2023-08-30 03:39:54,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:54,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:54,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:39:54,571 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 [2023-08-30 03:39:54,770 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 [2023-08-30 03:39:54,771 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:54,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:54,771 INFO L85 PathProgramCache]: Analyzing trace with hash -590582320, now seen corresponding path program 1 times [2023-08-30 03:39:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:54,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525752393] [2023-08-30 03:39:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:39:54,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:54,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:54,773 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) [2023-08-30 03:39:54,776 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 [2023-08-30 03:39:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:39:54,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 03:39:54,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:55,011 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 [2023-08-30 03:39:55,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:39:55,092 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 [2023-08-30 03:39:55,105 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:39:55,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 03:39:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:39:55,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:39:55,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:39:55,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525752393] [2023-08-30 03:39:55,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525752393] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:39:55,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:39:55,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:39:55,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256671987] [2023-08-30 03:39:55,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:39:55,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:39:55,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:39:55,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:39:55,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:39:55,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 478 [2023-08-30 03:39:55,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 94 transitions, 805 flow. Second operand has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:55,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:39:55,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 478 [2023-08-30 03:39:55,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:39:59,442 INFO L130 PetriNetUnfolder]: 676/1454 cut-off events. [2023-08-30 03:39:59,442 INFO L131 PetriNetUnfolder]: For 5731/5762 co-relation queries the response was YES. [2023-08-30 03:39:59,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6069 conditions, 1454 events. 676/1454 cut-off events. For 5731/5762 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9119 event pairs, 167 based on Foata normal form. 22/1387 useless extension candidates. Maximal degree in co-relation 6052. Up to 703 conditions per place. [2023-08-30 03:39:59,447 INFO L137 encePairwiseOnDemand]: 463/478 looper letters, 112 selfloop transitions, 31 changer transitions 2/158 dead transitions. [2023-08-30 03:39:59,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 158 transitions, 1555 flow [2023-08-30 03:39:59,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:39:59,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:39:59,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1349 transitions. [2023-08-30 03:39:59,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4031679617453676 [2023-08-30 03:39:59,451 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1349 transitions. [2023-08-30 03:39:59,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1349 transitions. [2023-08-30 03:39:59,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:39:59,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1349 transitions. [2023-08-30 03:39:59,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 192.71428571428572) internal successors, (1349), 7 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:59,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:59,458 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:59,458 INFO L175 Difference]: Start difference. First operand has 87 places, 94 transitions, 805 flow. Second operand 7 states and 1349 transitions. [2023-08-30 03:39:59,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 158 transitions, 1555 flow [2023-08-30 03:39:59,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 158 transitions, 1521 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:39:59,465 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 1039 flow [2023-08-30 03:39:59,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1039, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2023-08-30 03:39:59,465 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 9 predicate places. [2023-08-30 03:39:59,466 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 1039 flow [2023-08-30 03:39:59,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:39:59,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:39:59,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:39:59,480 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 (20)] Ended with exit code 0 [2023-08-30 03:39:59,680 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 [2023-08-30 03:39:59,680 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:39:59,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:39:59,680 INFO L85 PathProgramCache]: Analyzing trace with hash -591883065, now seen corresponding path program 2 times [2023-08-30 03:39:59,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:39:59,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571575632] [2023-08-30 03:39:59,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:39:59,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:39:59,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:39:59,682 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) [2023-08-30 03:39:59,684 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 [2023-08-30 03:39:59,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:39:59,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:39:59,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 03:39:59,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:39:59,944 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 [2023-08-30 03:39:59,953 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 [2023-08-30 03:40:00,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:40:00,022 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 [2023-08-30 03:40:00,034 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:40:00,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 03:40:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:40:00,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:40:00,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:40:00,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571575632] [2023-08-30 03:40:00,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571575632] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:40:00,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:40:00,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:40:00,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687860484] [2023-08-30 03:40:00,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:40:00,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:40:00,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:40:00,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:40:00,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:40:00,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 478 [2023-08-30 03:40:00,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 106 transitions, 1039 flow. Second operand has 5 states, 5 states have (on average 185.6) internal successors, (928), 5 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:40:00,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:40:00,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 478 [2023-08-30 03:40:00,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:40:03,142 INFO L130 PetriNetUnfolder]: 610/1316 cut-off events. [2023-08-30 03:40:03,142 INFO L131 PetriNetUnfolder]: For 5836/5881 co-relation queries the response was YES. [2023-08-30 03:40:03,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5772 conditions, 1316 events. 610/1316 cut-off events. For 5836/5881 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8193 event pairs, 115 based on Foata normal form. 14/1260 useless extension candidates. Maximal degree in co-relation 5754. Up to 741 conditions per place. [2023-08-30 03:40:03,147 INFO L137 encePairwiseOnDemand]: 464/478 looper letters, 93 selfloop transitions, 46 changer transitions 2/156 dead transitions. [2023-08-30 03:40:03,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 156 transitions, 1605 flow [2023-08-30 03:40:03,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:40:03,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:40:03,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1196 transitions. [2023-08-30 03:40:03,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41701534170153415 [2023-08-30 03:40:03,154 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1196 transitions. [2023-08-30 03:40:03,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1196 transitions. [2023-08-30 03:40:03,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:40:03,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1196 transitions. [2023-08-30 03:40:03,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:40:03,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:40:03,160 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:40:03,160 INFO L175 Difference]: Start difference. First operand has 91 places, 106 transitions, 1039 flow. Second operand 6 states and 1196 transitions. [2023-08-30 03:40:03,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 156 transitions, 1605 flow [2023-08-30 03:40:03,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 156 transitions, 1567 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:40:03,169 INFO L231 Difference]: Finished difference. Result has 90 places, 105 transitions, 1102 flow [2023-08-30 03:40:03,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1102, PETRI_PLACES=90, PETRI_TRANSITIONS=105} [2023-08-30 03:40:03,170 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2023-08-30 03:40:03,170 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 105 transitions, 1102 flow [2023-08-30 03:40:03,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 185.6) internal successors, (928), 5 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:40:03,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:40:03,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:40:03,186 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 (21)] Forceful destruction successful, exit code 0 [2023-08-30 03:40:03,385 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 [2023-08-30 03:40:03,385 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:40:03,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:40:03,385 INFO L85 PathProgramCache]: Analyzing trace with hash -591882460, now seen corresponding path program 2 times [2023-08-30 03:40:03,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:40:03,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040922478] [2023-08-30 03:40:03,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:40:03,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:40:03,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:40:03,387 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) [2023-08-30 03:40:03,388 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 [2023-08-30 03:40:03,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:40:03,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:40:03,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 03:40:03,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:40:03,706 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 [2023-08-30 03:40:03,715 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 [2023-08-30 03:40:03,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:40:03,777 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 [2023-08-30 03:40:03,788 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:40:03,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 03:40:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:40:03,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:40:03,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:40:03,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040922478] [2023-08-30 03:40:03,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040922478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:40:03,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:40:03,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:40:03,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502158041] [2023-08-30 03:40:03,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:40:03,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:40:03,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:40:03,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:40:03,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:40:04,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 478 [2023-08-30 03:40:04,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 105 transitions, 1102 flow. Second operand has 5 states, 5 states have (on average 185.6) internal successors, (928), 5 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:40:04,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:40:04,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 478 [2023-08-30 03:40:04,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15