./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-3_1-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_1-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 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --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 03:23:21,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:23:21,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:23:21,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:23:21,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:23:21,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:23:21,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:23:21,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:23:21,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:23:21,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:23:21,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:23:21,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:23:21,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:23:21,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:23:21,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:23:21,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:23:21,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:23:21,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:23:21,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:23:21,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:23:21,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:23:21,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:23:21,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:23:21,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:23:21,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:23:21,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:23:21,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:23:21,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:23:21,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:23:21,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:23:21,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:23:21,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:23:21,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:23:21,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:23:21,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:23:21,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:23:21,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:23:21,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:23:21,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:23:21,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:23:21,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:23:21,838 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:23:21,865 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:23:21,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:23:21,866 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:23:21,866 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:23:21,867 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:23:21,867 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:23:21,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:23:21,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:23:21,868 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:23:21,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:23:21,869 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:23:21,869 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:23:21,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:23:21,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:23:21,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:23:21,869 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:23:21,869 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:23:21,870 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:23:21,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:23:21,870 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:23:21,870 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:23:21,870 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:23:21,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:23:21,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:23:21,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:23:21,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:23:21,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:23:21,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:23:21,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:23:21,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:23:21,872 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:23:21,872 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:23:21,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:23:21,872 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:23:21,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:23:22,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:23:22,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:23:22,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:23:22,135 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:23:22,136 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:23:22,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-08-30 03:23:23,215 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:23:23,508 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:23:23,514 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-08-30 03:23:23,549 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99f999a5a/dbc8ab3d301c48be85bf75e53e03ad3c/FLAG7ab79aa4e [2023-08-30 03:23:23,563 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99f999a5a/dbc8ab3d301c48be85bf75e53e03ad3c [2023-08-30 03:23:23,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:23:23,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:23:23,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:23:23,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:23:23,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:23:23,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:23:23" (1/1) ... [2023-08-30 03:23:23,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec1e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:23, skipping insertion in model container [2023-08-30 03:23:23,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:23:23" (1/1) ... [2023-08-30 03:23:23,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:23:23,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:23:24,118 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_1-container_of-global.i[76084,76097] [2023-08-30 03:23:24,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:23:24,163 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 03:23:24,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3b7f67c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:24, skipping insertion in model container [2023-08-30 03:23:24,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:23:24,164 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 03:23:24,166 INFO L158 Benchmark]: Toolchain (without parser) took 598.94ms. Allocated memory is still 69.2MB. Free memory was 43.6MB in the beginning and 42.3MB in the end (delta: 1.3MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2023-08-30 03:23:24,166 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory is still 32.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:23:24,166 INFO L158 Benchmark]: CACSL2BoogieTranslator took 597.44ms. Allocated memory is still 69.2MB. Free memory was 43.4MB in the beginning and 42.3MB in the end (delta: 1.1MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2023-08-30 03:23:24,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory is still 32.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 597.44ms. Allocated memory is still 69.2MB. Free memory was 43.4MB in the beginning and 42.3MB in the end (delta: 1.1MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1709]: 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_1-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 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --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 03:23:25,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:23:25,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:23:25,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:23:25,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:23:25,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:23:25,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:23:25,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:23:25,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:23:25,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:23:25,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:23:25,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:23:25,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:23:25,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:23:25,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:23:25,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:23:25,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:23:25,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:23:25,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:23:25,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:23:25,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:23:25,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:23:25,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:23:25,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:23:25,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:23:25,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:23:25,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:23:25,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:23:25,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:23:25,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:23:25,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:23:25,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:23:25,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:23:25,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:23:25,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:23:25,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:23:25,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:23:25,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:23:25,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:23:25,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:23:25,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:23:25,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 03:23:25,673 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:23:25,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:23:25,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:23:25,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:23:25,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:23:25,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:23:25,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:23:25,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:23:25,676 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:23:25,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:23:25,677 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:23:25,677 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:23:25,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:23:25,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:23:25,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:23:25,678 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:23:25,678 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:23:25,678 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:23:25,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:23:25,678 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:23:25,678 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 03:23:25,679 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 03:23:25,679 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:23:25,679 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:23:25,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:23:25,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:23:25,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:23:25,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:23:25,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:23:25,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:23:25,680 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 03:23:25,680 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 03:23:25,680 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:23:25,681 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:23:25,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:23:25,681 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 03:23:25,681 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:23:25,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:23:25,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:23:25,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:23:25,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:23:25,955 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:23:25,956 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:23:25,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-08-30 03:23:26,920 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:23:27,182 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:23:27,182 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-08-30 03:23:27,227 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bae80d850/021e81335690473e8df1a385bc577e62/FLAGa83bab2ca [2023-08-30 03:23:27,238 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bae80d850/021e81335690473e8df1a385bc577e62 [2023-08-30 03:23:27,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:23:27,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:23:27,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:23:27,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:23:27,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:23:27,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:23:27" (1/1) ... [2023-08-30 03:23:27,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c66b11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:27, skipping insertion in model container [2023-08-30 03:23:27,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:23:27" (1/1) ... [2023-08-30 03:23:27,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:23:27,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:23:27,734 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_1-container_of-global.i[76084,76097] [2023-08-30 03:23:27,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:23:27,802 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 03:23:27,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:23:27,848 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_1-container_of-global.i[76084,76097] [2023-08-30 03:23:27,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:23:27,871 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:23:27,919 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_1-container_of-global.i[76084,76097] [2023-08-30 03:23:27,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:23:28,032 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:23:28,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:28 WrapperNode [2023-08-30 03:23:28,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:23:28,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:23:28,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:23:28,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:23:28,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:28" (1/1) ... [2023-08-30 03:23:28,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:28" (1/1) ... [2023-08-30 03:23:28,106 INFO L138 Inliner]: procedures = 486, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2023-08-30 03:23:28,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:23:28,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:23:28,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:23:28,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:23:28,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:28" (1/1) ... [2023-08-30 03:23:28,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:28" (1/1) ... [2023-08-30 03:23:28,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:28" (1/1) ... [2023-08-30 03:23:28,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:28" (1/1) ... [2023-08-30 03:23:28,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:28" (1/1) ... [2023-08-30 03:23:28,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:28" (1/1) ... [2023-08-30 03:23:28,173 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:28" (1/1) ... [2023-08-30 03:23:28,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:28" (1/1) ... [2023-08-30 03:23:28,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:23:28,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:23:28,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:23:28,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:23:28,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:28" (1/1) ... [2023-08-30 03:23:28,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:23:28,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:23:28,224 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 03:23:28,226 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 03:23:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:23:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 03:23:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-30 03:23:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 03:23:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:23:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 03:23:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:23:28,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:23:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 03:23:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-30 03:23:28,266 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-30 03:23:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:23:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 03:23:28,268 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 03:23:28,535 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:23:28,537 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:23:28,932 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:23:28,938 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:23:28,938 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:23:28,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:23:28 BoogieIcfgContainer [2023-08-30 03:23:28,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:23:28,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:23:28,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:23:28,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:23:28,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:23:27" (1/3) ... [2023-08-30 03:23:28,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af0e5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:23:28, skipping insertion in model container [2023-08-30 03:23:28,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:23:28" (2/3) ... [2023-08-30 03:23:28,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af0e5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:23:28, skipping insertion in model container [2023-08-30 03:23:28,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:23:28" (3/3) ... [2023-08-30 03:23:28,950 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2023-08-30 03:23:28,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:23:28,963 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-08-30 03:23:28,963 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:23:29,049 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 03:23:29,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 220 transitions, 456 flow [2023-08-30 03:23:29,169 INFO L130 PetriNetUnfolder]: 10/270 cut-off events. [2023-08-30 03:23:29,169 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 03:23:29,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 270 events. 10/270 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 676 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 155. Up to 4 conditions per place. [2023-08-30 03:23:29,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 220 transitions, 456 flow [2023-08-30 03:23:29,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 218 transitions, 448 flow [2023-08-30 03:23:29,192 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:23:29,200 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 216 places, 218 transitions, 448 flow [2023-08-30 03:23:29,204 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 216 places, 218 transitions, 448 flow [2023-08-30 03:23:29,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 218 transitions, 448 flow [2023-08-30 03:23:29,254 INFO L130 PetriNetUnfolder]: 10/270 cut-off events. [2023-08-30 03:23:29,254 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 03:23:29,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 270 events. 10/270 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 677 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 155. Up to 4 conditions per place. [2023-08-30 03:23:29,259 INFO L119 LiptonReduction]: Number of co-enabled transitions 5548 [2023-08-30 03:24:44,683 WARN L222 SmtUtils]: Spent 25.16s on a formula simplification. DAG size of input: 232 DAG size of output: 224 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:24:58,742 WARN L222 SmtUtils]: Spent 14.05s on a formula simplification that was a NOOP. DAG size: 220 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:25:22,570 WARN L222 SmtUtils]: Spent 23.82s on a formula simplification. DAG size of input: 235 DAG size of output: 227 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:25:33,798 WARN L222 SmtUtils]: Spent 11.22s on a formula simplification that was a NOOP. DAG size: 223 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:28:05,539 WARN L222 SmtUtils]: Spent 2.53m on a formula simplification. DAG size of input: 276 DAG size of output: 269 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:29:16,756 WARN L222 SmtUtils]: Spent 1.19m on a formula simplification that was a NOOP. DAG size: 256 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:31:47,024 WARN L222 SmtUtils]: Spent 2.50m on a formula simplification. DAG size of input: 285 DAG size of output: 276 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:33:13,859 WARN L222 SmtUtils]: Spent 1.45m on a formula simplification that was a NOOP. DAG size: 262 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:33:26,397 WARN L222 SmtUtils]: Spent 12.54s on a formula simplification that was a NOOP. DAG size: 227 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:33:39,729 WARN L222 SmtUtils]: Spent 13.33s on a formula simplification that was a NOOP. DAG size: 225 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:33:58,728 WARN L222 SmtUtils]: Spent 19.00s on a formula simplification. DAG size of input: 236 DAG size of output: 234 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:34:07,516 WARN L222 SmtUtils]: Spent 8.78s on a formula simplification that was a NOOP. DAG size: 231 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:34:07,845 INFO L134 LiptonReduction]: Checked pairs total: 24110 [2023-08-30 03:34:07,845 INFO L136 LiptonReduction]: Total number of compositions: 243 [2023-08-30 03:34:07,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:34:07,880 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;@7a9437d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:34:07,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-08-30 03:34:07,882 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 03:34:07,882 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:34:07,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:07,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:34:07,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:07,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:07,886 INFO L85 PathProgramCache]: Analyzing trace with hash 755, now seen corresponding path program 1 times [2023-08-30 03:34:07,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:07,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803592370] [2023-08-30 03:34:07,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:07,896 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 03:34:07,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:07,927 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 03:34:07,928 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 03:34:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:08,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-30 03:34:08,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:08,074 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 03:34:08,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:08,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:08,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803592370] [2023-08-30 03:34:08,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803592370] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:08,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:08,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:34:08,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196687716] [2023-08-30 03:34:08,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:08,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:34:08,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:34:08,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:34:08,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 463 [2023-08-30 03:34:08,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 204.5) internal successors, (409), 2 states have internal predecessors, (409), 0 states have call successors, (0), 0 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 03:34:08,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:08,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 463 [2023-08-30 03:34:08,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:09,027 INFO L130 PetriNetUnfolder]: 778/2034 cut-off events. [2023-08-30 03:34:09,027 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 03:34:09,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3384 conditions, 2034 events. 778/2034 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17144 event pairs, 777 based on Foata normal form. 0/1186 useless extension candidates. Maximal degree in co-relation 3238. Up to 1326 conditions per place. [2023-08-30 03:34:09,037 INFO L137 encePairwiseOnDemand]: 445/463 looper letters, 44 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2023-08-30 03:34:09,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 232 flow [2023-08-30 03:34:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:34:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:34:09,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 470 transitions. [2023-08-30 03:34:09,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075593952483801 [2023-08-30 03:34:09,060 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 470 transitions. [2023-08-30 03:34:09,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 470 transitions. [2023-08-30 03:34:09,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:09,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 470 transitions. [2023-08-30 03:34:09,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 235.0) internal successors, (470), 2 states have internal predecessors, (470), 0 states have call successors, (0), 0 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 03:34:09,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 463.0) internal successors, (1389), 3 states have internal predecessors, (1389), 0 states have call successors, (0), 0 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 03:34:09,075 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 463.0) internal successors, (1389), 3 states have internal predecessors, (1389), 0 states have call successors, (0), 0 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 03:34:09,076 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 180 flow. Second operand 2 states and 470 transitions. [2023-08-30 03:34:09,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 232 flow [2023-08-30 03:34:09,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:34:09,086 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 136 flow [2023-08-30 03:34:09,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=136, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2023-08-30 03:34:09,090 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2023-08-30 03:34:09,091 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 136 flow [2023-08-30 03:34:09,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 204.5) internal successors, (409), 2 states have internal predecessors, (409), 0 states have call successors, (0), 0 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 03:34:09,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:09,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 03:34:09,118 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 03:34:09,301 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 03:34:09,301 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 03:34:09,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:09,302 INFO L85 PathProgramCache]: Analyzing trace with hash 24474, now seen corresponding path program 1 times [2023-08-30 03:34:09,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:09,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581765540] [2023-08-30 03:34:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:09,304 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 03:34:09,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:09,305 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 03:34:09,328 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 (3)] Waiting until timeout for monitored process [2023-08-30 03:34:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:09,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:34:09,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:09,460 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 03:34:09,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:09,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:09,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581765540] [2023-08-30 03:34:09,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581765540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:09,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:09,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:34:09,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118754406] [2023-08-30 03:34:09,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:09,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:34:09,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:09,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:34:09,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:34:09,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 463 [2023-08-30 03:34:09,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 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 03:34:09,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:09,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 463 [2023-08-30 03:34:09,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:10,773 INFO L130 PetriNetUnfolder]: 777/1572 cut-off events. [2023-08-30 03:34:10,773 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 03:34:10,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 1572 events. 777/1572 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9972 event pairs, 777 based on Foata normal form. 0/1010 useless extension candidates. Maximal degree in co-relation 2913. Up to 1321 conditions per place. [2023-08-30 03:34:10,780 INFO L137 encePairwiseOnDemand]: 459/463 looper letters, 54 selfloop transitions, 1 changer transitions 1/78 dead transitions. [2023-08-30 03:34:10,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 272 flow [2023-08-30 03:34:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:34:10,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:34:10,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-30 03:34:10,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744420446364291 [2023-08-30 03:34:10,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-30 03:34:10,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-30 03:34:10,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:10,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-30 03:34:10,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 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 03:34:10,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:10,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:10,788 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 136 flow. Second operand 3 states and 659 transitions. [2023-08-30 03:34:10,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 272 flow [2023-08-30 03:34:10,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:34:10,789 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 145 flow [2023-08-30 03:34:10,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2023-08-30 03:34:10,790 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2023-08-30 03:34:10,790 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 145 flow [2023-08-30 03:34:10,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 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 03:34:10,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:10,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:34:10,813 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 (3)] Ended with exit code 0 [2023-08-30 03:34:11,000 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 03:34:11,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:11,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:11,001 INFO L85 PathProgramCache]: Analyzing trace with hash 752065, now seen corresponding path program 1 times [2023-08-30 03:34:11,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:11,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59845142] [2023-08-30 03:34:11,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:11,002 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 03:34:11,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:11,003 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 03:34:11,029 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 03:34:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:11,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 03:34:11,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:11,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:11,237 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 03:34:11,266 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 03:34:11,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:11,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:11,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59845142] [2023-08-30 03:34:11,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59845142] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:11,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:11,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:34:11,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487511690] [2023-08-30 03:34:11,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:11,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:34:11,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:11,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:34:11,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:34:11,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 463 [2023-08-30 03:34:11,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:11,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:11,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 463 [2023-08-30 03:34:11,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:12,609 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 03:34:13,166 INFO L130 PetriNetUnfolder]: 768/1888 cut-off events. [2023-08-30 03:34:13,166 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-30 03:34:13,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3299 conditions, 1888 events. 768/1888 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 14823 event pairs, 768 based on Foata normal form. 0/1154 useless extension candidates. Maximal degree in co-relation 3294. Up to 1313 conditions per place. [2023-08-30 03:34:13,174 INFO L137 encePairwiseOnDemand]: 459/463 looper letters, 40 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-30 03:34:13,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 64 transitions, 225 flow [2023-08-30 03:34:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:34:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:34:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-08-30 03:34:13,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658027357811375 [2023-08-30 03:34:13,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-08-30 03:34:13,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-08-30 03:34:13,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:13,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-08-30 03:34:13,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 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 03:34:13,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:13,193 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:13,193 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 145 flow. Second operand 3 states and 647 transitions. [2023-08-30 03:34:13,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 64 transitions, 225 flow [2023-08-30 03:34:13,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:34:13,196 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 144 flow [2023-08-30 03:34:13,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-08-30 03:34:13,197 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-30 03:34:13,197 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 144 flow [2023-08-30 03:34:13,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:13,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:13,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:34:13,211 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 03:34:13,408 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 03:34:13,409 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:13,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:13,411 INFO L85 PathProgramCache]: Analyzing trace with hash 752066, now seen corresponding path program 1 times [2023-08-30 03:34:13,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:13,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262699077] [2023-08-30 03:34:13,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:13,412 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 03:34:13,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:13,436 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 03:34:13,438 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 03:34:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:13,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 03:34:13,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:13,604 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 03:34:13,605 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 03:34:13,623 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 03:34:13,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:13,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:13,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262699077] [2023-08-30 03:34:13,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262699077] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:13,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:13,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:34:13,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630463724] [2023-08-30 03:34:13,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:13,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:34:13,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:13,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:34:13,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:34:13,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 463 [2023-08-30 03:34:13,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 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 03:34:13,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:13,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 463 [2023-08-30 03:34:13,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:14,694 INFO L130 PetriNetUnfolder]: 759/1870 cut-off events. [2023-08-30 03:34:14,695 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-30 03:34:14,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3263 conditions, 1870 events. 759/1870 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14707 event pairs, 669 based on Foata normal form. 0/1150 useless extension candidates. Maximal degree in co-relation 3258. Up to 1128 conditions per place. [2023-08-30 03:34:14,703 INFO L137 encePairwiseOnDemand]: 452/463 looper letters, 50 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2023-08-30 03:34:14,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 81 transitions, 296 flow [2023-08-30 03:34:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:34:14,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:34:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2023-08-30 03:34:14,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47588192944564434 [2023-08-30 03:34:14,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2023-08-30 03:34:14,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2023-08-30 03:34:14,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:14,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2023-08-30 03:34:14,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 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 03:34:14,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:14,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:14,718 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 144 flow. Second operand 3 states and 661 transitions. [2023-08-30 03:34:14,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 81 transitions, 296 flow [2023-08-30 03:34:14,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 81 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:34:14,721 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 169 flow [2023-08-30 03:34:14,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-08-30 03:34:14,723 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-30 03:34:14,723 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 169 flow [2023-08-30 03:34:14,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 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 03:34:14,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:14,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:34:14,733 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 03:34:14,933 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 03:34:14,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:14,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:14,933 INFO L85 PathProgramCache]: Analyzing trace with hash 755639, now seen corresponding path program 1 times [2023-08-30 03:34:14,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:14,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108149753] [2023-08-30 03:34:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:14,934 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 03:34:14,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:14,945 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 03:34:14,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-30 03:34:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:15,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:34:15,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:15,045 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 03:34:15,050 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 03:34:15,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:15,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:15,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108149753] [2023-08-30 03:34:15,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108149753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:15,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:15,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:34:15,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202992163] [2023-08-30 03:34:15,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:15,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:34:15,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:15,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:34:15,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:34:15,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 463 [2023-08-30 03:34:15,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:15,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:15,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 463 [2023-08-30 03:34:15,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:16,401 INFO L130 PetriNetUnfolder]: 759/1854 cut-off events. [2023-08-30 03:34:16,401 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-30 03:34:16,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3321 conditions, 1854 events. 759/1854 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 14353 event pairs, 669 based on Foata normal form. 0/1142 useless extension candidates. Maximal degree in co-relation 3315. Up to 1141 conditions per place. [2023-08-30 03:34:16,410 INFO L137 encePairwiseOnDemand]: 456/463 looper letters, 44 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2023-08-30 03:34:16,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 283 flow [2023-08-30 03:34:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:34:16,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:34:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2023-08-30 03:34:16,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4406047516198704 [2023-08-30 03:34:16,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2023-08-30 03:34:16,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2023-08-30 03:34:16,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:16,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2023-08-30 03:34:16,416 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 03:34:16,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:16,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:16,419 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 169 flow. Second operand 3 states and 612 transitions. [2023-08-30 03:34:16,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 283 flow [2023-08-30 03:34:16,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:34:16,422 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 168 flow [2023-08-30 03:34:16,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2023-08-30 03:34:16,424 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -17 predicate places. [2023-08-30 03:34:16,424 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 168 flow [2023-08-30 03:34:16,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:16,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:16,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:34:16,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-30 03:34:16,649 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 03:34:16,649 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:16,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:16,650 INFO L85 PathProgramCache]: Analyzing trace with hash 755700, now seen corresponding path program 1 times [2023-08-30 03:34:16,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:16,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285858955] [2023-08-30 03:34:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:16,651 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 03:34:16,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:16,652 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 03:34:16,653 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 03:34:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:16,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 03:34:16,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:16,783 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 03:34:16,796 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 03:34:16,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:16,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:16,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285858955] [2023-08-30 03:34:16,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285858955] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:16,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:16,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:34:16,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758995341] [2023-08-30 03:34:16,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:16,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:34:16,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:16,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:34:16,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:34:17,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 463 [2023-08-30 03:34:17,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 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 03:34:17,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:17,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 463 [2023-08-30 03:34:17,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:18,115 INFO L130 PetriNetUnfolder]: 579/1376 cut-off events. [2023-08-30 03:34:18,115 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-30 03:34:18,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2546 conditions, 1376 events. 579/1376 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9787 event pairs, 345 based on Foata normal form. 29/945 useless extension candidates. Maximal degree in co-relation 2540. Up to 591 conditions per place. [2023-08-30 03:34:18,128 INFO L137 encePairwiseOnDemand]: 453/463 looper letters, 49 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-08-30 03:34:18,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 306 flow [2023-08-30 03:34:18,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:34:18,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:34:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-30 03:34:18,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4614830813534917 [2023-08-30 03:34:18,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-30 03:34:18,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-30 03:34:18,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:18,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-30 03:34:18,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 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 03:34:18,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:18,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:18,136 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 168 flow. Second operand 3 states and 641 transitions. [2023-08-30 03:34:18,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 306 flow [2023-08-30 03:34:18,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:34:18,142 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 182 flow [2023-08-30 03:34:18,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2023-08-30 03:34:18,144 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-30 03:34:18,144 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 182 flow [2023-08-30 03:34:18,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 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 03:34:18,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:18,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:34:18,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-30 03:34:18,355 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 03:34:18,356 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:18,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash 23314436, now seen corresponding path program 1 times [2023-08-30 03:34:18,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:18,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297132595] [2023-08-30 03:34:18,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:18,357 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 03:34:18,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:18,358 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 03:34:18,360 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 03:34:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:18,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 03:34:18,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:18,480 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 03:34:18,507 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 03:34:18,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:18,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:18,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297132595] [2023-08-30 03:34:18,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297132595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:18,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:18,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:34:18,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574931425] [2023-08-30 03:34:18,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:18,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:34:18,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:34:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:34:18,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 463 [2023-08-30 03:34:18,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 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 03:34:18,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:18,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 463 [2023-08-30 03:34:18,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:21,011 INFO L130 PetriNetUnfolder]: 517/1034 cut-off events. [2023-08-30 03:34:21,011 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2023-08-30 03:34:21,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2273 conditions, 1034 events. 517/1034 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6070 event pairs, 215 based on Foata normal form. 42/853 useless extension candidates. Maximal degree in co-relation 2266. Up to 550 conditions per place. [2023-08-30 03:34:21,016 INFO L137 encePairwiseOnDemand]: 455/463 looper letters, 66 selfloop transitions, 8 changer transitions 1/94 dead transitions. [2023-08-30 03:34:21,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 424 flow [2023-08-30 03:34:21,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:34:21,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:34:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 861 transitions. [2023-08-30 03:34:21,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46490280777537796 [2023-08-30 03:34:21,020 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 861 transitions. [2023-08-30 03:34:21,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 861 transitions. [2023-08-30 03:34:21,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:21,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 861 transitions. [2023-08-30 03:34:21,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 215.25) internal successors, (861), 4 states have internal predecessors, (861), 0 states have call successors, (0), 0 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 03:34:21,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:21,024 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:21,024 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 182 flow. Second operand 4 states and 861 transitions. [2023-08-30 03:34:21,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 424 flow [2023-08-30 03:34:21,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:34:21,027 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 220 flow [2023-08-30 03:34:21,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-08-30 03:34:21,027 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -13 predicate places. [2023-08-30 03:34:21,027 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 220 flow [2023-08-30 03:34:21,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 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 03:34:21,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:21,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:34:21,037 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 03:34:21,237 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 03:34:21,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:21,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:21,238 INFO L85 PathProgramCache]: Analyzing trace with hash 23314435, now seen corresponding path program 1 times [2023-08-30 03:34:21,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:21,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205126465] [2023-08-30 03:34:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:21,239 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 03:34:21,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:21,240 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 03:34:21,244 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 03:34:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:21,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 03:34:21,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:21,370 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 03:34:21,385 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 03:34:21,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:21,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:21,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205126465] [2023-08-30 03:34:21,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205126465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:21,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:21,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:34:21,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807743275] [2023-08-30 03:34:21,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:21,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:34:21,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:21,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:34:21,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:34:21,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 463 [2023-08-30 03:34:21,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 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 03:34:21,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:21,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 463 [2023-08-30 03:34:21,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:23,515 INFO L130 PetriNetUnfolder]: 561/1093 cut-off events. [2023-08-30 03:34:23,515 INFO L131 PetriNetUnfolder]: For 276/276 co-relation queries the response was YES. [2023-08-30 03:34:23,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2588 conditions, 1093 events. 561/1093 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6502 event pairs, 90 based on Foata normal form. 0/937 useless extension candidates. Maximal degree in co-relation 2579. Up to 648 conditions per place. [2023-08-30 03:34:23,521 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 68 selfloop transitions, 14 changer transitions 0/100 dead transitions. [2023-08-30 03:34:23,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 100 transitions, 465 flow [2023-08-30 03:34:23,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:34:23,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:34:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1045 transitions. [2023-08-30 03:34:23,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4514038876889849 [2023-08-30 03:34:23,526 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1045 transitions. [2023-08-30 03:34:23,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1045 transitions. [2023-08-30 03:34:23,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:23,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1045 transitions. [2023-08-30 03:34:23,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 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 03:34:23,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 463.0) internal successors, (2778), 6 states have internal predecessors, (2778), 0 states have call successors, (0), 0 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 03:34:23,533 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 463.0) internal successors, (2778), 6 states have internal predecessors, (2778), 0 states have call successors, (0), 0 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 03:34:23,533 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 220 flow. Second operand 5 states and 1045 transitions. [2023-08-30 03:34:23,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 100 transitions, 465 flow [2023-08-30 03:34:23,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 100 transitions, 445 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 03:34:23,537 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 298 flow [2023-08-30 03:34:23,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=200, 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=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2023-08-30 03:34:23,538 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -7 predicate places. [2023-08-30 03:34:23,538 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 298 flow [2023-08-30 03:34:23,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 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 03:34:23,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:23,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 03:34:23,567 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 03:34:23,751 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 03:34:23,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:23,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:23,752 INFO L85 PathProgramCache]: Analyzing trace with hash 726180173, now seen corresponding path program 1 times [2023-08-30 03:34:23,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:23,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899007304] [2023-08-30 03:34:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:23,753 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 03:34:23,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:23,755 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 03:34:23,757 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 03:34:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:23,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 03:34:23,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:23,989 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 03:34:24,059 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 03:34:24,059 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 03:34:24,083 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 03:34:24,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:24,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:24,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899007304] [2023-08-30 03:34:24,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899007304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:24,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:24,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:34:24,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906617690] [2023-08-30 03:34:24,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:24,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:34:24,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:24,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:34:24,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:34:24,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-08-30 03:34:24,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:24,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:24,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-08-30 03:34:24,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:27,042 INFO L130 PetriNetUnfolder]: 713/1567 cut-off events. [2023-08-30 03:34:27,042 INFO L131 PetriNetUnfolder]: For 1159/1244 co-relation queries the response was YES. [2023-08-30 03:34:27,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3782 conditions, 1567 events. 713/1567 cut-off events. For 1159/1244 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10689 event pairs, 426 based on Foata normal form. 7/1284 useless extension candidates. Maximal degree in co-relation 3771. Up to 1022 conditions per place. [2023-08-30 03:34:27,067 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 52 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-08-30 03:34:27,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 476 flow [2023-08-30 03:34:27,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:34:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:34:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2023-08-30 03:34:27,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44852411807055437 [2023-08-30 03:34:27,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2023-08-30 03:34:27,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2023-08-30 03:34:27,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:27,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2023-08-30 03:34:27,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 03:34:27,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:27,074 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:27,074 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 298 flow. Second operand 3 states and 623 transitions. [2023-08-30 03:34:27,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 476 flow [2023-08-30 03:34:27,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 476 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:34:27,077 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 390 flow [2023-08-30 03:34:27,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=390, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2023-08-30 03:34:27,079 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2023-08-30 03:34:27,079 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 390 flow [2023-08-30 03:34:27,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:27,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:27,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:34:27,090 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 (10)] Forceful destruction successful, exit code 0 [2023-08-30 03:34:27,290 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 03:34:27,290 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:27,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:27,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1036749589, now seen corresponding path program 1 times [2023-08-30 03:34:27,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:27,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371822569] [2023-08-30 03:34:27,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:27,292 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 03:34:27,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:27,292 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 03:34:27,295 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 03:34:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:27,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 03:34:27,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:27,487 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:34:27,487 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:34:27,488 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:34:27,490 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 03:34:27,539 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 03:34:27,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:27,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:27,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371822569] [2023-08-30 03:34:27,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371822569] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:27,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:27,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:34:27,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590426988] [2023-08-30 03:34:27,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:27,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:34:27,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:27,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:34:27,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:34:28,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-08-30 03:34:28,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 390 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 03:34:28,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:28,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-08-30 03:34:28,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:29,499 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 03:34:31,127 INFO L130 PetriNetUnfolder]: 910/1868 cut-off events. [2023-08-30 03:34:31,127 INFO L131 PetriNetUnfolder]: For 2608/2729 co-relation queries the response was YES. [2023-08-30 03:34:31,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5521 conditions, 1868 events. 910/1868 cut-off events. For 2608/2729 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12418 event pairs, 501 based on Foata normal form. 7/1607 useless extension candidates. Maximal degree in co-relation 5508. Up to 1261 conditions per place. [2023-08-30 03:34:31,136 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 58 selfloop transitions, 17 changer transitions 0/95 dead transitions. [2023-08-30 03:34:31,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 95 transitions, 638 flow [2023-08-30 03:34:31,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:34:31,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:34:31,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-30 03:34:31,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44924406047516197 [2023-08-30 03:34:31,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-30 03:34:31,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-30 03:34:31,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:31,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-30 03:34:31,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:31,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:31,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:31,142 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 390 flow. Second operand 3 states and 624 transitions. [2023-08-30 03:34:31,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 95 transitions, 638 flow [2023-08-30 03:34:31,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 95 transitions, 606 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:34:31,147 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 524 flow [2023-08-30 03:34:31,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2023-08-30 03:34:31,148 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2023-08-30 03:34:31,148 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 524 flow [2023-08-30 03:34:31,148 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 03:34:31,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:31,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:34:31,161 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 03:34:31,359 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 03:34:31,359 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:31,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:31,360 INFO L85 PathProgramCache]: Analyzing trace with hash 930484587, now seen corresponding path program 1 times [2023-08-30 03:34:31,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:31,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897883324] [2023-08-30 03:34:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:31,361 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 03:34:31,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:31,362 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 03:34:31,364 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 03:34:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:31,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 03:34:31,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:31,572 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 03:34:31,572 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 03:34:31,601 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 03:34:31,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:31,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:31,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897883324] [2023-08-30 03:34:31,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897883324] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:31,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:31,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:34:31,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875512110] [2023-08-30 03:34:31,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:31,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:34:31,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:31,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:34:31,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:34:31,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 463 [2023-08-30 03:34:31,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:31,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:31,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 463 [2023-08-30 03:34:31,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:32,817 INFO L130 PetriNetUnfolder]: 772/1665 cut-off events. [2023-08-30 03:34:32,817 INFO L131 PetriNetUnfolder]: For 3259/3396 co-relation queries the response was YES. [2023-08-30 03:34:32,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5442 conditions, 1665 events. 772/1665 cut-off events. For 3259/3396 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11272 event pairs, 414 based on Foata normal form. 0/1404 useless extension candidates. Maximal degree in co-relation 5428. Up to 984 conditions per place. [2023-08-30 03:34:32,826 INFO L137 encePairwiseOnDemand]: 453/463 looper letters, 55 selfloop transitions, 15 changer transitions 0/95 dead transitions. [2023-08-30 03:34:32,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 95 transitions, 684 flow [2023-08-30 03:34:32,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:34:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:34:32,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-08-30 03:34:32,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679625629949604 [2023-08-30 03:34:32,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-08-30 03:34:32,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-08-30 03:34:32,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:32,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-08-30 03:34:32,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 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 03:34:32,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:32,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:32,833 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 524 flow. Second operand 3 states and 650 transitions. [2023-08-30 03:34:32,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 95 transitions, 684 flow [2023-08-30 03:34:32,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 650 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:34:32,837 INFO L231 Difference]: Finished difference. Result has 84 places, 87 transitions, 508 flow [2023-08-30 03:34:32,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=84, PETRI_TRANSITIONS=87} [2023-08-30 03:34:32,837 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -2 predicate places. [2023-08-30 03:34:32,837 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 508 flow [2023-08-30 03:34:32,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:32,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:32,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:34:32,849 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 03:34:33,047 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 03:34:33,048 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:33,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash 930484588, now seen corresponding path program 1 times [2023-08-30 03:34:33,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:33,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645436320] [2023-08-30 03:34:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:33,049 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 03:34:33,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:33,050 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 03:34:33,052 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 03:34:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:33,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 03:34:33,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:33,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:33,250 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 03:34:33,301 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 03:34:33,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:33,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:33,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645436320] [2023-08-30 03:34:33,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645436320] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:33,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:33,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:34:33,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644690544] [2023-08-30 03:34:33,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:33,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:34:33,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:33,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:34:33,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:34:33,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 463 [2023-08-30 03:34:33,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 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 03:34:33,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:33,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 463 [2023-08-30 03:34:33,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:34,260 INFO L130 PetriNetUnfolder]: 734/1575 cut-off events. [2023-08-30 03:34:34,260 INFO L131 PetriNetUnfolder]: For 3078/3214 co-relation queries the response was YES. [2023-08-30 03:34:34,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5027 conditions, 1575 events. 734/1575 cut-off events. For 3078/3214 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10488 event pairs, 448 based on Foata normal form. 4/1304 useless extension candidates. Maximal degree in co-relation 5013. Up to 1191 conditions per place. [2023-08-30 03:34:34,282 INFO L137 encePairwiseOnDemand]: 460/463 looper letters, 58 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-30 03:34:34,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 616 flow [2023-08-30 03:34:34,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:34:34,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:34:34,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-30 03:34:34,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4614830813534917 [2023-08-30 03:34:34,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-30 03:34:34,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-30 03:34:34,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:34,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-30 03:34:34,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 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 03:34:34,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:34,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:34,298 INFO L175 Difference]: Start difference. First operand has 84 places, 87 transitions, 508 flow. Second operand 3 states and 641 transitions. [2023-08-30 03:34:34,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 616 flow [2023-08-30 03:34:34,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 586 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:34:34,302 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 470 flow [2023-08-30 03:34:34,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2023-08-30 03:34:34,303 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2023-08-30 03:34:34,303 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 470 flow [2023-08-30 03:34:34,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 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 03:34:34,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:34,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:34:34,329 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 03:34:34,514 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 03:34:34,514 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:34,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:34,515 INFO L85 PathProgramCache]: Analyzing trace with hash 930485032, now seen corresponding path program 1 times [2023-08-30 03:34:34,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:34,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297650609] [2023-08-30 03:34:34,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:34,516 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 03:34:34,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:34,517 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 03:34:34,518 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 03:34:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:34,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 03:34:34,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:34,672 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 03:34:34,701 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 03:34:34,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:34,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:34,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297650609] [2023-08-30 03:34:34,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297650609] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:34,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:34,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:34:34,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605631560] [2023-08-30 03:34:34,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:34,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:34:34,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:34,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:34:34,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:34:35,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 463 [2023-08-30 03:34:35,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 470 flow. Second operand has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 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 03:34:35,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:35,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 463 [2023-08-30 03:34:35,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:37,324 INFO L130 PetriNetUnfolder]: 764/1676 cut-off events. [2023-08-30 03:34:37,324 INFO L131 PetriNetUnfolder]: For 2801/2916 co-relation queries the response was YES. [2023-08-30 03:34:37,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5130 conditions, 1676 events. 764/1676 cut-off events. For 2801/2916 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11601 event pairs, 91 based on Foata normal form. 285/1789 useless extension candidates. Maximal degree in co-relation 5116. Up to 905 conditions per place. [2023-08-30 03:34:37,331 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 96 selfloop transitions, 6 changer transitions 1/125 dead transitions. [2023-08-30 03:34:37,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 125 transitions, 910 flow [2023-08-30 03:34:37,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:34:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:34:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 855 transitions. [2023-08-30 03:34:37,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46166306695464365 [2023-08-30 03:34:37,344 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 855 transitions. [2023-08-30 03:34:37,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 855 transitions. [2023-08-30 03:34:37,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:37,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 855 transitions. [2023-08-30 03:34:37,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 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 03:34:37,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:37,348 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:37,348 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 470 flow. Second operand 4 states and 855 transitions. [2023-08-30 03:34:37,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 125 transitions, 910 flow [2023-08-30 03:34:37,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 125 transitions, 908 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:34:37,352 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 509 flow [2023-08-30 03:34:37,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=509, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2023-08-30 03:34:37,353 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 1 predicate places. [2023-08-30 03:34:37,353 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 509 flow [2023-08-30 03:34:37,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 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 03:34:37,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:37,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:34:37,381 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 (14)] Ended with exit code 0 [2023-08-30 03:34:37,563 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 03:34:37,563 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:37,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:37,563 INFO L85 PathProgramCache]: Analyzing trace with hash 930485031, now seen corresponding path program 1 times [2023-08-30 03:34:37,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:37,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567445544] [2023-08-30 03:34:37,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:37,564 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 03:34:37,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:37,565 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 03:34:37,568 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 03:34:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:37,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 03:34:37,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:37,715 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 7 [2023-08-30 03:34:37,731 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 03:34:37,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:37,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567445544] [2023-08-30 03:34:37,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567445544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:37,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:37,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:34:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708020150] [2023-08-30 03:34:37,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:37,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:34:37,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:37,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:34:37,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:34:37,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 463 [2023-08-30 03:34:37,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 509 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 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 03:34:37,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:37,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 463 [2023-08-30 03:34:37,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:40,138 INFO L130 PetriNetUnfolder]: 1131/2072 cut-off events. [2023-08-30 03:34:40,139 INFO L131 PetriNetUnfolder]: For 3890/4040 co-relation queries the response was YES. [2023-08-30 03:34:40,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7116 conditions, 2072 events. 1131/2072 cut-off events. For 3890/4040 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12259 event pairs, 231 based on Foata normal form. 190/2104 useless extension candidates. Maximal degree in co-relation 7100. Up to 1117 conditions per place. [2023-08-30 03:34:40,146 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 97 selfloop transitions, 22 changer transitions 0/136 dead transitions. [2023-08-30 03:34:40,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 136 transitions, 1010 flow [2023-08-30 03:34:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:34:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:34:40,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1047 transitions. [2023-08-30 03:34:40,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45226781857451404 [2023-08-30 03:34:40,151 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1047 transitions. [2023-08-30 03:34:40,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1047 transitions. [2023-08-30 03:34:40,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:40,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1047 transitions. [2023-08-30 03:34:40,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.4) internal successors, (1047), 5 states have internal predecessors, (1047), 0 states have call successors, (0), 0 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 03:34:40,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 463.0) internal successors, (2778), 6 states have internal predecessors, (2778), 0 states have call successors, (0), 0 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 03:34:40,155 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 463.0) internal successors, (2778), 6 states have internal predecessors, (2778), 0 states have call successors, (0), 0 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 03:34:40,156 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 509 flow. Second operand 5 states and 1047 transitions. [2023-08-30 03:34:40,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 136 transitions, 1010 flow [2023-08-30 03:34:40,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 136 transitions, 1005 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:34:40,162 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 682 flow [2023-08-30 03:34:40,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=682, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2023-08-30 03:34:40,163 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2023-08-30 03:34:40,163 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 682 flow [2023-08-30 03:34:40,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 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 03:34:40,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:40,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:34:40,189 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 03:34:40,389 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 03:34:40,389 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:40,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:40,389 INFO L85 PathProgramCache]: Analyzing trace with hash -116036107, now seen corresponding path program 1 times [2023-08-30 03:34:40,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:40,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297671949] [2023-08-30 03:34:40,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:40,390 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 03:34:40,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:40,393 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 03:34:40,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-30 03:34:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:40,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 03:34:40,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:40,688 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_187| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_187| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_187|)))) is different from true [2023-08-30 03:34:40,689 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 03:34:40,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:40,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:40,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297671949] [2023-08-30 03:34:40,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297671949] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:40,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:40,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:34:40,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356389091] [2023-08-30 03:34:40,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:40,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:34:40,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:40,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:34:40,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-08-30 03:34:40,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 463 [2023-08-30 03:34:40,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 682 flow. Second operand has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 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 03:34:40,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:40,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 463 [2023-08-30 03:34:40,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:42,069 INFO L130 PetriNetUnfolder]: 1848/3148 cut-off events. [2023-08-30 03:34:42,070 INFO L131 PetriNetUnfolder]: For 7934/7934 co-relation queries the response was YES. [2023-08-30 03:34:42,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11584 conditions, 3148 events. 1848/3148 cut-off events. For 7934/7934 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 17848 event pairs, 757 based on Foata normal form. 0/2855 useless extension candidates. Maximal degree in co-relation 11565. Up to 1526 conditions per place. [2023-08-30 03:34:42,081 INFO L137 encePairwiseOnDemand]: 441/463 looper letters, 84 selfloop transitions, 32 changer transitions 2/125 dead transitions. [2023-08-30 03:34:42,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 125 transitions, 1076 flow [2023-08-30 03:34:42,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:34:42,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:34:42,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 632 transitions. [2023-08-30 03:34:42,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3412526997840173 [2023-08-30 03:34:42,087 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 632 transitions. [2023-08-30 03:34:42,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 632 transitions. [2023-08-30 03:34:42,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:42,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 632 transitions. [2023-08-30 03:34:42,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.0) internal successors, (632), 4 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 03:34:42,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:42,090 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:42,090 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 682 flow. Second operand 4 states and 632 transitions. [2023-08-30 03:34:42,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 125 transitions, 1076 flow [2023-08-30 03:34:42,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 125 transitions, 1076 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:34:42,096 INFO L231 Difference]: Finished difference. Result has 98 places, 111 transitions, 888 flow [2023-08-30 03:34:42,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=888, PETRI_PLACES=98, PETRI_TRANSITIONS=111} [2023-08-30 03:34:42,097 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2023-08-30 03:34:42,097 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 111 transitions, 888 flow [2023-08-30 03:34:42,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 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 03:34:42,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:42,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:34:42,107 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 03:34:42,307 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 03:34:42,307 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:42,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:42,308 INFO L85 PathProgramCache]: Analyzing trace with hash 985146853, now seen corresponding path program 1 times [2023-08-30 03:34:42,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:42,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551284591] [2023-08-30 03:34:42,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:42,308 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 03:34:42,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:42,317 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 03:34:42,345 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 03:34:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:42,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 03:34:42,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:42,573 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 03:34:42,582 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 03:34:42,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:42,644 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 03:34:42,652 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:34:42,652 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 03:34:42,664 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 03:34:42,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:42,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:42,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551284591] [2023-08-30 03:34:42,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551284591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:42,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:42,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:34:42,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706157455] [2023-08-30 03:34:42,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:42,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:34:42,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:42,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:34:42,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:34:43,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 463 [2023-08-30 03:34:43,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 111 transitions, 888 flow. Second operand has 5 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 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 03:34:43,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:43,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 463 [2023-08-30 03:34:43,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:44,781 INFO L130 PetriNetUnfolder]: 1651/2976 cut-off events. [2023-08-30 03:34:44,782 INFO L131 PetriNetUnfolder]: For 9526/9633 co-relation queries the response was YES. [2023-08-30 03:34:44,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12123 conditions, 2976 events. 1651/2976 cut-off events. For 9526/9633 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18633 event pairs, 470 based on Foata normal form. 28/2808 useless extension candidates. Maximal degree in co-relation 12102. Up to 1585 conditions per place. [2023-08-30 03:34:44,794 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 103 selfloop transitions, 25 changer transitions 0/154 dead transitions. [2023-08-30 03:34:44,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 154 transitions, 1401 flow [2023-08-30 03:34:44,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:34:44,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:34:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1211 transitions. [2023-08-30 03:34:44,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4359251259899208 [2023-08-30 03:34:44,797 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1211 transitions. [2023-08-30 03:34:44,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1211 transitions. [2023-08-30 03:34:44,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:44,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1211 transitions. [2023-08-30 03:34:44,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.83333333333334) internal successors, (1211), 6 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 03:34:44,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:44,802 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:44,802 INFO L175 Difference]: Start difference. First operand has 98 places, 111 transitions, 888 flow. Second operand 6 states and 1211 transitions. [2023-08-30 03:34:44,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 154 transitions, 1401 flow [2023-08-30 03:34:44,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 1317 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-08-30 03:34:44,813 INFO L231 Difference]: Finished difference. Result has 97 places, 109 transitions, 880 flow [2023-08-30 03:34:44,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=880, PETRI_PLACES=97, PETRI_TRANSITIONS=109} [2023-08-30 03:34:44,814 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 11 predicate places. [2023-08-30 03:34:44,814 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 109 transitions, 880 flow [2023-08-30 03:34:44,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 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 03:34:44,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:44,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:34:44,839 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 03:34:45,024 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 03:34:45,024 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 03:34:45,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:45,025 INFO L85 PathProgramCache]: Analyzing trace with hash 842498780, now seen corresponding path program 1 times [2023-08-30 03:34:45,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:45,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585596175] [2023-08-30 03:34:45,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:45,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:34:45,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:45,041 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 03:34:45,092 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 03:34:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:45,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 03:34:45,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:45,269 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 03:34:45,275 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 03:34:45,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:45,359 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 03:34:45,368 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:34:45,368 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 03:34:45,378 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 03:34:45,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:45,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:45,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585596175] [2023-08-30 03:34:45,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585596175] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:45,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:45,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:34:45,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339012082] [2023-08-30 03:34:45,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:45,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:34:45,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:45,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:34:45,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:34:46,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 463 [2023-08-30 03:34:46,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 109 transitions, 880 flow. Second operand has 5 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 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 03:34:46,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:46,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 463 [2023-08-30 03:34:46,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:47,948 INFO L130 PetriNetUnfolder]: 2036/3646 cut-off events. [2023-08-30 03:34:47,948 INFO L131 PetriNetUnfolder]: For 11967/12125 co-relation queries the response was YES. [2023-08-30 03:34:47,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15215 conditions, 3646 events. 2036/3646 cut-off events. For 11967/12125 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 23645 event pairs, 667 based on Foata normal form. 33/3521 useless extension candidates. Maximal degree in co-relation 15194. Up to 2080 conditions per place. [2023-08-30 03:34:47,962 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 124 selfloop transitions, 25 changer transitions 0/164 dead transitions. [2023-08-30 03:34:47,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 164 transitions, 1531 flow [2023-08-30 03:34:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:34:47,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:34:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1220 transitions. [2023-08-30 03:34:47,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43916486681065514 [2023-08-30 03:34:47,966 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1220 transitions. [2023-08-30 03:34:47,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1220 transitions. [2023-08-30 03:34:47,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:47,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1220 transitions. [2023-08-30 03:34:47,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 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 03:34:47,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:47,970 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:47,970 INFO L175 Difference]: Start difference. First operand has 97 places, 109 transitions, 880 flow. Second operand 6 states and 1220 transitions. [2023-08-30 03:34:47,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 164 transitions, 1531 flow [2023-08-30 03:34:47,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 164 transitions, 1496 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:34:47,984 INFO L231 Difference]: Finished difference. Result has 96 places, 107 transitions, 919 flow [2023-08-30 03:34:47,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=919, PETRI_PLACES=96, PETRI_TRANSITIONS=107} [2023-08-30 03:34:47,985 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 10 predicate places. [2023-08-30 03:34:47,985 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 107 transitions, 919 flow [2023-08-30 03:34:47,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 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 03:34:47,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:47,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:34:47,995 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 03:34:48,195 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 03:34:48,196 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:48,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:48,196 INFO L85 PathProgramCache]: Analyzing trace with hash 930438315, now seen corresponding path program 1 times [2023-08-30 03:34:48,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:48,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922625017] [2023-08-30 03:34:48,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:48,197 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 03:34:48,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:48,198 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 03:34:48,200 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 (19)] Waiting until timeout for monitored process [2023-08-30 03:34:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:48,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:34:48,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:48,418 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 03:34:48,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:48,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:48,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922625017] [2023-08-30 03:34:48,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922625017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:48,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:48,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:34:48,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419133151] [2023-08-30 03:34:48,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:48,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:34:48,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:48,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:34:48,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:34:48,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 463 [2023-08-30 03:34:48,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 107 transitions, 919 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 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 03:34:48,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:48,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 463 [2023-08-30 03:34:48,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:49,703 INFO L130 PetriNetUnfolder]: 107/263 cut-off events. [2023-08-30 03:34:49,704 INFO L131 PetriNetUnfolder]: For 677/719 co-relation queries the response was YES. [2023-08-30 03:34:49,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 263 events. 107/263 cut-off events. For 677/719 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1078 event pairs, 25 based on Foata normal form. 23/266 useless extension candidates. Maximal degree in co-relation 959. Up to 161 conditions per place. [2023-08-30 03:34:49,705 INFO L137 encePairwiseOnDemand]: 461/463 looper letters, 41 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2023-08-30 03:34:49,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 54 transitions, 451 flow [2023-08-30 03:34:49,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:34:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:34:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-30 03:34:49,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45788336933045354 [2023-08-30 03:34:49,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-30 03:34:49,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-30 03:34:49,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:49,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-30 03:34:49,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 03:34:49,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:49,736 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:49,736 INFO L175 Difference]: Start difference. First operand has 96 places, 107 transitions, 919 flow. Second operand 3 states and 636 transitions. [2023-08-30 03:34:49,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 54 transitions, 451 flow [2023-08-30 03:34:49,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 54 transitions, 269 flow, removed 25 selfloop flow, removed 23 redundant places. [2023-08-30 03:34:49,738 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 153 flow [2023-08-30 03:34:49,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-30 03:34:49,738 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -24 predicate places. [2023-08-30 03:34:49,738 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 153 flow [2023-08-30 03:34:49,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 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 03:34:49,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:49,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:34:49,749 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 03:34:49,949 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 03:34:49,949 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:49,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:49,950 INFO L85 PathProgramCache]: Analyzing trace with hash -487331399, now seen corresponding path program 1 times [2023-08-30 03:34:49,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:49,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783924798] [2023-08-30 03:34:49,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:49,950 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 03:34:49,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:49,951 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 03:34:49,953 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 03:34:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:50,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 03:34:50,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:50,153 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 03:34:50,172 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 03:34:50,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:50,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783924798] [2023-08-30 03:34:50,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783924798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:50,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:50,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:34:50,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092284357] [2023-08-30 03:34:50,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:50,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:34:50,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:34:50,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:34:50,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 463 [2023-08-30 03:34:50,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:50,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:50,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 463 [2023-08-30 03:34:50,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:51,717 INFO L130 PetriNetUnfolder]: 102/254 cut-off events. [2023-08-30 03:34:51,718 INFO L131 PetriNetUnfolder]: For 154/158 co-relation queries the response was YES. [2023-08-30 03:34:51,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 254 events. 102/254 cut-off events. For 154/158 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 988 event pairs, 55 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 663. Up to 120 conditions per place. [2023-08-30 03:34:51,719 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 30 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2023-08-30 03:34:51,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 249 flow [2023-08-30 03:34:51,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:34:51,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:34:51,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 633 transitions. [2023-08-30 03:34:51,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557235421166307 [2023-08-30 03:34:51,721 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 633 transitions. [2023-08-30 03:34:51,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 633 transitions. [2023-08-30 03:34:51,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:51,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 633 transitions. [2023-08-30 03:34:51,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 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 03:34:51,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:51,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:51,724 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 153 flow. Second operand 3 states and 633 transitions. [2023-08-30 03:34:51,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 249 flow [2023-08-30 03:34:51,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:34:51,725 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 168 flow [2023-08-30 03:34:51,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-08-30 03:34:51,726 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -26 predicate places. [2023-08-30 03:34:51,726 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 168 flow [2023-08-30 03:34:51,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:51,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:51,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:34:51,740 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 03:34:51,941 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 03:34:51,941 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:51,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:51,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1341240180, now seen corresponding path program 1 times [2023-08-30 03:34:51,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:51,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158404291] [2023-08-30 03:34:51,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:51,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:34:51,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:51,944 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 03:34:51,946 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 03:34:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:52,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:34:52,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:52,147 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 03:34:52,160 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 03:34:52,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:52,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:52,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158404291] [2023-08-30 03:34:52,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158404291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:52,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:52,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:34:52,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618962904] [2023-08-30 03:34:52,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:52,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:34:52,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:52,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:34:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:34:52,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 463 [2023-08-30 03:34:52,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 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 03:34:52,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:52,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 463 [2023-08-30 03:34:52,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:53,534 INFO L130 PetriNetUnfolder]: 102/248 cut-off events. [2023-08-30 03:34:53,534 INFO L131 PetriNetUnfolder]: For 188/192 co-relation queries the response was YES. [2023-08-30 03:34:53,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 248 events. 102/248 cut-off events. For 188/192 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 956 event pairs, 55 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 683. Up to 120 conditions per place. [2023-08-30 03:34:53,535 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 30 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2023-08-30 03:34:53,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 47 transitions, 264 flow [2023-08-30 03:34:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:34:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:34:53,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-30 03:34:53,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44924406047516197 [2023-08-30 03:34:53,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-30 03:34:53,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-30 03:34:53,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:53,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-30 03:34:53,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:53,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:53,539 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:53,539 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 168 flow. Second operand 3 states and 624 transitions. [2023-08-30 03:34:53,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 47 transitions, 264 flow [2023-08-30 03:34:53,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 47 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:34:53,540 INFO L231 Difference]: Finished difference. Result has 58 places, 42 transitions, 164 flow [2023-08-30 03:34:53,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2023-08-30 03:34:53,541 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -28 predicate places. [2023-08-30 03:34:53,541 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 164 flow [2023-08-30 03:34:53,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 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 03:34:53,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:53,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:34:53,553 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 03:34:53,753 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 03:34:53,753 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:53,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash 2072499635, now seen corresponding path program 1 times [2023-08-30 03:34:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:53,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134999217] [2023-08-30 03:34:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:53,754 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 03:34:53,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:53,755 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 03:34:53,757 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 03:34:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:34:54,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 03:34:54,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:54,102 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 11 treesize of output 9 [2023-08-30 03:34:54,132 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 03:34:54,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:54,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:54,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134999217] [2023-08-30 03:34:54,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134999217] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:54,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:54,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:34:54,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428051998] [2023-08-30 03:34:54,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:54,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:34:54,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:54,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:34:54,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:34:54,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 463 [2023-08-30 03:34:54,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 0 states have call successors, (0), 0 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 03:34:54,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:54,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 463 [2023-08-30 03:34:54,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:55,135 INFO L130 PetriNetUnfolder]: 46/153 cut-off events. [2023-08-30 03:34:55,135 INFO L131 PetriNetUnfolder]: For 117/120 co-relation queries the response was YES. [2023-08-30 03:34:55,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 153 events. 46/153 cut-off events. For 117/120 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 503 event pairs, 17 based on Foata normal form. 15/160 useless extension candidates. Maximal degree in co-relation 417. Up to 74 conditions per place. [2023-08-30 03:34:55,136 INFO L137 encePairwiseOnDemand]: 458/463 looper letters, 37 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-08-30 03:34:55,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 287 flow [2023-08-30 03:34:55,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:34:55,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:34:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 835 transitions. [2023-08-30 03:34:55,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4508639308855292 [2023-08-30 03:34:55,137 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 835 transitions. [2023-08-30 03:34:55,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 835 transitions. [2023-08-30 03:34:55,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:55,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 835 transitions. [2023-08-30 03:34:55,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 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 03:34:55,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:55,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:55,140 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 164 flow. Second operand 4 states and 835 transitions. [2023-08-30 03:34:55,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 287 flow [2023-08-30 03:34:55,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 246 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 03:34:55,141 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 143 flow [2023-08-30 03:34:55,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-08-30 03:34:55,142 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -29 predicate places. [2023-08-30 03:34:55,142 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 143 flow [2023-08-30 03:34:55,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 0 states have call successors, (0), 0 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 03:34:55,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:55,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:34:55,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-08-30 03:34:55,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:34:55,342 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:55,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1978086337, now seen corresponding path program 2 times [2023-08-30 03:34:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:55,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805406616] [2023-08-30 03:34:55,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:34:55,343 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 03:34:55,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:55,344 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:34:55,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-08-30 03:34:55,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:34:55,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:34:55,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 03:34:55,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:34:55,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:55,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:55,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:34:55,967 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:34:55,968 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:34:55,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2023-08-30 03:34:56,028 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 03:34:56,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 73 [2023-08-30 03:34:56,106 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:34:56,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2023-08-30 03:34:56,208 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 03:34:56,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:34:56,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:34:56,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805406616] [2023-08-30 03:34:56,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805406616] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:34:56,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:34:56,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 03:34:56,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519554937] [2023-08-30 03:34:56,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:34:56,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 03:34:56,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:34:56,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 03:34:56,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 03:34:57,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 463 [2023-08-30 03:34:57,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 185.71428571428572) internal successors, (1300), 7 states have internal predecessors, (1300), 0 states have call successors, (0), 0 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 03:34:57,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:34:57,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 463 [2023-08-30 03:34:57,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:34:59,771 INFO L130 PetriNetUnfolder]: 62/187 cut-off events. [2023-08-30 03:34:59,772 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-30 03:34:59,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 187 events. 62/187 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 614 event pairs, 17 based on Foata normal form. 1/172 useless extension candidates. Maximal degree in co-relation 484. Up to 62 conditions per place. [2023-08-30 03:34:59,772 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 47 selfloop transitions, 18 changer transitions 0/71 dead transitions. [2023-08-30 03:34:59,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 71 transitions, 375 flow [2023-08-30 03:34:59,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:34:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:34:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1160 transitions. [2023-08-30 03:34:59,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175665946724262 [2023-08-30 03:34:59,775 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1160 transitions. [2023-08-30 03:34:59,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1160 transitions. [2023-08-30 03:34:59,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:34:59,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1160 transitions. [2023-08-30 03:34:59,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 193.33333333333334) internal successors, (1160), 6 states have internal predecessors, (1160), 0 states have call successors, (0), 0 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 03:34:59,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:59,779 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:34:59,779 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 143 flow. Second operand 6 states and 1160 transitions. [2023-08-30 03:34:59,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 71 transitions, 375 flow [2023-08-30 03:34:59,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 71 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:34:59,780 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 246 flow [2023-08-30 03:34:59,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2023-08-30 03:34:59,780 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -25 predicate places. [2023-08-30 03:34:59,780 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 246 flow [2023-08-30 03:34:59,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 185.71428571428572) internal successors, (1300), 7 states have internal predecessors, (1300), 0 states have call successors, (0), 0 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 03:34:59,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:34:59,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:34:59,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-08-30 03:34:59,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:34:59,993 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:34:59,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:34:59,993 INFO L85 PathProgramCache]: Analyzing trace with hash -936881934, now seen corresponding path program 1 times [2023-08-30 03:34:59,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:34:59,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508524185] [2023-08-30 03:34:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:34:59,994 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 03:34:59,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:34:59,995 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:34:59,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-30 03:35:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:35:00,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 03:35:00,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:35:00,408 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 03:35:00,456 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 03:35:00,456 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 03:35:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:35:00,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:35:00,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:35:00,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508524185] [2023-08-30 03:35:00,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508524185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:35:00,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:35:00,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:35:00,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866342815] [2023-08-30 03:35:00,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:35:00,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:35:00,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:35:00,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:35:00,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:35:01,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 463 [2023-08-30 03:35:01,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 03:35:01,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:35:01,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 463 [2023-08-30 03:35:01,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:35:02,228 INFO L130 PetriNetUnfolder]: 54/179 cut-off events. [2023-08-30 03:35:02,228 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2023-08-30 03:35:02,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 179 events. 54/179 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 607 event pairs, 24 based on Foata normal form. 1/171 useless extension candidates. Maximal degree in co-relation 491. Up to 82 conditions per place. [2023-08-30 03:35:02,229 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 31 selfloop transitions, 18 changer transitions 0/55 dead transitions. [2023-08-30 03:35:02,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 343 flow [2023-08-30 03:35:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:35:02,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:35:02,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 757 transitions. [2023-08-30 03:35:02,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4087473002159827 [2023-08-30 03:35:02,230 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 757 transitions. [2023-08-30 03:35:02,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 757 transitions. [2023-08-30 03:35:02,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:35:02,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 757 transitions. [2023-08-30 03:35:02,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 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 03:35:02,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:35:02,233 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:35:02,233 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 246 flow. Second operand 4 states and 757 transitions. [2023-08-30 03:35:02,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 343 flow [2023-08-30 03:35:02,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:35:02,234 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 257 flow [2023-08-30 03:35:02,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2023-08-30 03:35:02,235 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -25 predicate places. [2023-08-30 03:35:02,235 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 257 flow [2023-08-30 03:35:02,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 03:35:02,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:35:02,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:35:02,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-08-30 03:35:02,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:35:02,446 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:35:02,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:35:02,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1017490362, now seen corresponding path program 1 times [2023-08-30 03:35:02,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:35:02,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519647739] [2023-08-30 03:35:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:35:02,447 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 03:35:02,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:35:02,448 INFO L229 MonitoredProcess]: Starting monitored process 25 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 03:35:02,450 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 (25)] Waiting until timeout for monitored process [2023-08-30 03:35:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:35:02,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 03:35:02,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:35:02,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:35:02,970 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:35:02,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-08-30 03:35:03,015 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-30 03:35:03,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 03:35:03,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:03,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-30 03:35:03,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:35:03,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:03,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:03,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:03,519 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:35:03,520 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:35:03,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:35:03,779 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:35:03,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2023-08-30 03:35:03,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 110 [2023-08-30 03:35:04,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 118 [2023-08-30 03:35:07,494 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 03:35:07,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:35:07,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:35:07,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519647739] [2023-08-30 03:35:07,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519647739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:35:07,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:35:07,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 03:35:07,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733274164] [2023-08-30 03:35:07,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:35:07,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 03:35:07,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:35:07,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 03:35:07,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-30 03:35:24,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-30 03:35:24,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 257 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 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 03:35:24,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:35:24,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-30 03:35:24,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:35:26,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 03:35:32,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 03:35:33,898 INFO L130 PetriNetUnfolder]: 114/308 cut-off events. [2023-08-30 03:35:33,898 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2023-08-30 03:35:33,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 308 events. 114/308 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1242 event pairs, 28 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 917. Up to 178 conditions per place. [2023-08-30 03:35:33,900 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 86 selfloop transitions, 26 changer transitions 0/115 dead transitions. [2023-08-30 03:35:33,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 115 transitions, 767 flow [2023-08-30 03:35:33,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 03:35:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 03:35:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2193 transitions. [2023-08-30 03:35:33,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39470842332613393 [2023-08-30 03:35:33,905 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2193 transitions. [2023-08-30 03:35:33,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2193 transitions. [2023-08-30 03:35:33,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:35:33,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2193 transitions. [2023-08-30 03:35:33,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 182.75) internal successors, (2193), 12 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:35:33,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:35:33,914 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:35:33,914 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 257 flow. Second operand 12 states and 2193 transitions. [2023-08-30 03:35:33,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 115 transitions, 767 flow [2023-08-30 03:35:33,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 115 transitions, 703 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:35:33,917 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 429 flow [2023-08-30 03:35:33,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=429, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2023-08-30 03:35:33,917 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -12 predicate places. [2023-08-30 03:35:33,917 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 429 flow [2023-08-30 03:35:33,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 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 03:35:33,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:35:33,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:35:33,936 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 (25)] Forceful destruction successful, exit code 0 [2023-08-30 03:35:34,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 03:35:34,134 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:35:34,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:35:34,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1768874920, now seen corresponding path program 2 times [2023-08-30 03:35:34,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:35:34,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50867498] [2023-08-30 03:35:34,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:35:34,135 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 03:35:34,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:35:34,138 INFO L229 MonitoredProcess]: Starting monitored process 26 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 03:35:34,139 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 (26)] Waiting until timeout for monitored process [2023-08-30 03:35:34,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:35:34,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:35:34,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 03:35:34,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:35:34,786 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-30 03:35:34,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 03:35:34,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:35:34,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:34,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-30 03:35:34,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:34,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-30 03:35:35,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:35:35,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:35,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:35,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:35,591 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:35:35,591 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:35:35,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:35:35,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:35:35,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-30 03:35:35,926 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:35:35,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 215 [2023-08-30 03:35:36,048 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 03:35:36,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:35:36,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:35:36,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50867498] [2023-08-30 03:35:36,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50867498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:35:36,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:35:36,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 03:35:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907217992] [2023-08-30 03:35:36,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:35:36,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 03:35:36,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:35:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 03:35:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-30 03:35:39,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-30 03:35:39,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 429 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 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 03:35:39,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:35:39,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-30 03:35:39,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:35:44,369 INFO L130 PetriNetUnfolder]: 118/328 cut-off events. [2023-08-30 03:35:44,369 INFO L131 PetriNetUnfolder]: For 322/322 co-relation queries the response was YES. [2023-08-30 03:35:44,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 328 events. 118/328 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1387 event pairs, 38 based on Foata normal form. 1/319 useless extension candidates. Maximal degree in co-relation 1115. Up to 212 conditions per place. [2023-08-30 03:35:44,370 INFO L137 encePairwiseOnDemand]: 447/463 looper letters, 87 selfloop transitions, 24 changer transitions 0/114 dead transitions. [2023-08-30 03:35:44,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 114 transitions, 826 flow [2023-08-30 03:35:44,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 03:35:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 03:35:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2013 transitions. [2023-08-30 03:35:44,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952483801295896 [2023-08-30 03:35:44,373 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2013 transitions. [2023-08-30 03:35:44,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2013 transitions. [2023-08-30 03:35:44,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:35:44,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2013 transitions. [2023-08-30 03:35:44,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 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 03:35:44,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 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 03:35:44,379 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 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 03:35:44,380 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 429 flow. Second operand 11 states and 2013 transitions. [2023-08-30 03:35:44,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 114 transitions, 826 flow [2023-08-30 03:35:44,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 114 transitions, 822 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 03:35:44,382 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 533 flow [2023-08-30 03:35:44,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=533, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2023-08-30 03:35:44,382 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2023-08-30 03:35:44,382 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 533 flow [2023-08-30 03:35:44,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 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 03:35:44,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:35:44,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:35:44,397 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 (26)] Forceful destruction successful, exit code 0 [2023-08-30 03:35:44,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 03:35:44,596 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:35:44,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:35:44,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1962004304, now seen corresponding path program 3 times [2023-08-30 03:35:44,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:35:44,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907494960] [2023-08-30 03:35:44,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 03:35:44,597 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 03:35:44,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:35:44,598 INFO L229 MonitoredProcess]: Starting monitored process 27 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 03:35:44,600 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 (27)] Waiting until timeout for monitored process [2023-08-30 03:35:45,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 03:35:45,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:35:45,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-30 03:35:45,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:35:45,077 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-30 03:35:45,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 03:35:45,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:35:45,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:45,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-30 03:35:45,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:45,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-30 03:35:45,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:35:45,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:45,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:45,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:45,677 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:35:45,677 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:35:45,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:35:45,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:35:45,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 58 [2023-08-30 03:35:45,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:45,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:45,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:35:45,946 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:35:45,946 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:35:45,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 209 [2023-08-30 03:35:46,010 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 03:35:46,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:35:46,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:35:46,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907494960] [2023-08-30 03:35:46,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907494960] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:35:46,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:35:46,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 03:35:46,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573155723] [2023-08-30 03:35:46,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:35:46,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 03:35:46,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:35:46,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 03:35:46,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-08-30 03:35:49,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 463 [2023-08-30 03:35:49,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 533 flow. Second operand has 11 states, 11 states have (on average 179.9090909090909) internal successors, (1979), 11 states have internal predecessors, (1979), 0 states have call successors, (0), 0 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 03:35:49,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:35:49,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 463 [2023-08-30 03:35:49,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:35:54,620 INFO L130 PetriNetUnfolder]: 119/340 cut-off events. [2023-08-30 03:35:54,620 INFO L131 PetriNetUnfolder]: For 437/437 co-relation queries the response was YES. [2023-08-30 03:35:54,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 340 events. 119/340 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1483 event pairs, 32 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 1228. Up to 223 conditions per place. [2023-08-30 03:35:54,622 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 93 selfloop transitions, 22 changer transitions 0/118 dead transitions. [2023-08-30 03:35:54,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 118 transitions, 937 flow [2023-08-30 03:35:54,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 03:35:54,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 03:35:54,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2047 transitions. [2023-08-30 03:35:54,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40192420969958764 [2023-08-30 03:35:54,624 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2047 transitions. [2023-08-30 03:35:54,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2047 transitions. [2023-08-30 03:35:54,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:35:54,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2047 transitions. [2023-08-30 03:35:54,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 186.0909090909091) internal successors, (2047), 11 states have internal predecessors, (2047), 0 states have call successors, (0), 0 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 03:35:54,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 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 03:35:54,630 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 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 03:35:54,630 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 533 flow. Second operand 11 states and 2047 transitions. [2023-08-30 03:35:54,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 118 transitions, 937 flow [2023-08-30 03:35:54,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 118 transitions, 898 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-30 03:35:54,633 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 553 flow [2023-08-30 03:35:54,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=553, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2023-08-30 03:35:54,634 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2023-08-30 03:35:54,634 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 553 flow [2023-08-30 03:35:54,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 179.9090909090909) internal successors, (1979), 11 states have internal predecessors, (1979), 0 states have call successors, (0), 0 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 03:35:54,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:35:54,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:35:54,651 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 (27)] Forceful destruction successful, exit code 0 [2023-08-30 03:35:54,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 03:35:54,847 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:35:54,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:35:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash -491551967, now seen corresponding path program 1 times [2023-08-30 03:35:54,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:35:54,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16907340] [2023-08-30 03:35:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:35:54,849 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 03:35:54,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:35:54,850 INFO L229 MonitoredProcess]: Starting monitored process 28 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 03:35:54,852 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 (28)] Waiting until timeout for monitored process [2023-08-30 03:35:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:35:55,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 03:35:55,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:35:55,258 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 03:35:55,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:35:55,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:35:55,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16907340] [2023-08-30 03:35:55,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16907340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:35:55,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:35:55,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:35:55,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378496177] [2023-08-30 03:35:55,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:35:55,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:35:55,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:35:55,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:35:55,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:35:55,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 463 [2023-08-30 03:35:55,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 553 flow. Second operand has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 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 03:35:55,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:35:55,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 463 [2023-08-30 03:35:55,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:35:57,162 INFO L130 PetriNetUnfolder]: 128/425 cut-off events. [2023-08-30 03:35:57,162 INFO L131 PetriNetUnfolder]: For 657/658 co-relation queries the response was YES. [2023-08-30 03:35:57,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 425 events. 128/425 cut-off events. For 657/658 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2299 event pairs, 56 based on Foata normal form. 11/420 useless extension candidates. Maximal degree in co-relation 1518. Up to 213 conditions per place. [2023-08-30 03:35:57,164 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 88 selfloop transitions, 22 changer transitions 0/117 dead transitions. [2023-08-30 03:35:57,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 117 transitions, 1035 flow [2023-08-30 03:35:57,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:35:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:35:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1168 transitions. [2023-08-30 03:35:57,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42044636429085674 [2023-08-30 03:35:57,165 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1168 transitions. [2023-08-30 03:35:57,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1168 transitions. [2023-08-30 03:35:57,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:35:57,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1168 transitions. [2023-08-30 03:35:57,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 194.66666666666666) internal successors, (1168), 6 states have internal predecessors, (1168), 0 states have call successors, (0), 0 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 03:35:57,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:35:57,187 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:35:57,187 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 553 flow. Second operand 6 states and 1168 transitions. [2023-08-30 03:35:57,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 117 transitions, 1035 flow [2023-08-30 03:35:57,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 981 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 03:35:57,190 INFO L231 Difference]: Finished difference. Result has 85 places, 88 transitions, 708 flow [2023-08-30 03:35:57,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=708, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2023-08-30 03:35:57,191 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2023-08-30 03:35:57,191 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 708 flow [2023-08-30 03:35:57,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 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 03:35:57,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:35:57,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:35:57,201 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 (28)] Ended with exit code 0 [2023-08-30 03:35:57,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 03:35:57,401 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:35:57,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:35:57,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1236749071, now seen corresponding path program 2 times [2023-08-30 03:35:57,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:35:57,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480391528] [2023-08-30 03:35:57,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:35:57,402 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 03:35:57,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:35:57,403 INFO L229 MonitoredProcess]: Starting monitored process 29 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 03:35:57,405 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 (29)] Waiting until timeout for monitored process [2023-08-30 03:35:57,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:35:57,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:35:57,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 03:35:57,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:35:57,794 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 03:35:57,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:35:57,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:35:57,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480391528] [2023-08-30 03:35:57,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480391528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:35:57,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:35:57,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:35:57,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306120354] [2023-08-30 03:35:57,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:35:57,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:35:57,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:35:57,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:35:57,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:35:58,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 463 [2023-08-30 03:35:58,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 708 flow. Second operand has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 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 03:35:58,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:35:58,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 463 [2023-08-30 03:35:58,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:36:00,113 INFO L130 PetriNetUnfolder]: 149/491 cut-off events. [2023-08-30 03:36:00,113 INFO L131 PetriNetUnfolder]: For 1081/1082 co-relation queries the response was YES. [2023-08-30 03:36:00,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1810 conditions, 491 events. 149/491 cut-off events. For 1081/1082 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2852 event pairs, 20 based on Foata normal form. 12/499 useless extension candidates. Maximal degree in co-relation 1789. Up to 258 conditions per place. [2023-08-30 03:36:00,115 INFO L137 encePairwiseOnDemand]: 453/463 looper letters, 86 selfloop transitions, 24 changer transitions 0/118 dead transitions. [2023-08-30 03:36:00,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 118 transitions, 1112 flow [2023-08-30 03:36:00,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:36:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:36:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1168 transitions. [2023-08-30 03:36:00,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42044636429085674 [2023-08-30 03:36:00,117 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1168 transitions. [2023-08-30 03:36:00,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1168 transitions. [2023-08-30 03:36:00,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:36:00,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1168 transitions. [2023-08-30 03:36:00,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 194.66666666666666) internal successors, (1168), 6 states have internal predecessors, (1168), 0 states have call successors, (0), 0 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 03:36:00,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:36:00,124 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:36:00,124 INFO L175 Difference]: Start difference. First operand has 85 places, 88 transitions, 708 flow. Second operand 6 states and 1168 transitions. [2023-08-30 03:36:00,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 118 transitions, 1112 flow [2023-08-30 03:36:00,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 118 transitions, 1073 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 03:36:00,132 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 850 flow [2023-08-30 03:36:00,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=850, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2023-08-30 03:36:00,133 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 2 predicate places. [2023-08-30 03:36:00,133 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 850 flow [2023-08-30 03:36:00,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 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 03:36:00,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:36:00,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:36:00,147 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 (29)] Ended with exit code 0 [2023-08-30 03:36:00,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 03:36:00,348 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:36:00,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:36:00,349 INFO L85 PathProgramCache]: Analyzing trace with hash -579667442, now seen corresponding path program 4 times [2023-08-30 03:36:00,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:36:00,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404498173] [2023-08-30 03:36:00,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 03:36:00,350 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 03:36:00,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:36:00,354 INFO L229 MonitoredProcess]: Starting monitored process 30 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 03:36:00,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-08-30 03:36:00,888 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 03:36:00,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:36:00,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-30 03:36:00,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:36:00,971 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-30 03:36:00,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 03:36:00,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:36:00,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:36:00,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-30 03:36:01,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:36:01,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-30 03:36:01,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:36:01,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:36:01,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:36:01,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:36:01,611 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:36:01,612 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:36:01,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:36:01,764 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:36:01,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2023-08-30 03:36:01,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 110 [2023-08-30 03:36:02,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 118 [2023-08-30 03:36:04,495 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 03:36:04,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:36:04,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:36:04,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404498173] [2023-08-30 03:36:04,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404498173] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:36:04,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:36:04,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 03:36:04,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000387827] [2023-08-30 03:36:04,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:36:04,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 03:36:04,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:36:04,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 03:36:04,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-30 03:36:08,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 03:36:17,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-30 03:36:17,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 850 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 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 03:36:17,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:36:17,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-30 03:36:17,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:36:24,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 03:36:25,554 INFO L130 PetriNetUnfolder]: 178/550 cut-off events. [2023-08-30 03:36:25,554 INFO L131 PetriNetUnfolder]: For 1587/1587 co-relation queries the response was YES. [2023-08-30 03:36:25,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2210 conditions, 550 events. 178/550 cut-off events. For 1587/1587 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3195 event pairs, 61 based on Foata normal form. 2/549 useless extension candidates. Maximal degree in co-relation 2188. Up to 319 conditions per place. [2023-08-30 03:36:25,556 INFO L137 encePairwiseOnDemand]: 449/463 looper letters, 104 selfloop transitions, 33 changer transitions 0/139 dead transitions. [2023-08-30 03:36:25,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 139 transitions, 1386 flow [2023-08-30 03:36:25,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 03:36:25,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 03:36:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2364 transitions. [2023-08-30 03:36:25,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39275627180594785 [2023-08-30 03:36:25,559 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2364 transitions. [2023-08-30 03:36:25,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2364 transitions. [2023-08-30 03:36:25,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:36:25,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2364 transitions. [2023-08-30 03:36:25,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 181.84615384615384) internal successors, (2364), 13 states have internal predecessors, (2364), 0 states have call successors, (0), 0 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 03:36:25,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 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 03:36:25,564 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 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 03:36:25,564 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 850 flow. Second operand 13 states and 2364 transitions. [2023-08-30 03:36:25,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 139 transitions, 1386 flow [2023-08-30 03:36:25,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 139 transitions, 1326 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-30 03:36:25,570 INFO L231 Difference]: Finished difference. Result has 100 places, 99 transitions, 939 flow [2023-08-30 03:36:25,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=939, PETRI_PLACES=100, PETRI_TRANSITIONS=99} [2023-08-30 03:36:25,576 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 14 predicate places. [2023-08-30 03:36:25,576 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 99 transitions, 939 flow [2023-08-30 03:36:25,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 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 03:36:25,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:36:25,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:36:25,591 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 (30)] Forceful destruction successful, exit code 0 [2023-08-30 03:36:25,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 03:36:25,789 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:36:25,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:36:25,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1690661023, now seen corresponding path program 3 times [2023-08-30 03:36:25,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:36:25,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074226343] [2023-08-30 03:36:25,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 03:36:25,791 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 03:36:25,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:36:25,792 INFO L229 MonitoredProcess]: Starting monitored process 31 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 03:36:25,794 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 (31)] Waiting until timeout for monitored process [2023-08-30 03:36:26,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 03:36:26,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:36:26,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 03:36:26,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:36:26,180 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 03:36:26,186 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 03:36:26,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:36:26,334 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 03:36:26,342 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:36:26,342 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 03:36:26,365 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 03:36:26,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:36:26,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:36:26,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074226343] [2023-08-30 03:36:26,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074226343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:36:26,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:36:26,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:36:26,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040152295] [2023-08-30 03:36:26,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:36:26,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:36:26,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:36:26,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:36:26,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:36:26,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 463 [2023-08-30 03:36:26,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 939 flow. Second operand has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 03:36:26,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:36:26,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 463 [2023-08-30 03:36:26,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:36:27,754 INFO L130 PetriNetUnfolder]: 137/478 cut-off events. [2023-08-30 03:36:27,754 INFO L131 PetriNetUnfolder]: For 1667/1680 co-relation queries the response was YES. [2023-08-30 03:36:27,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 478 events. 137/478 cut-off events. For 1667/1680 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2834 event pairs, 87 based on Foata normal form. 8/467 useless extension candidates. Maximal degree in co-relation 1945. Up to 410 conditions per place. [2023-08-30 03:36:27,756 INFO L137 encePairwiseOnDemand]: 459/463 looper letters, 77 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-08-30 03:36:27,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 93 transitions, 1022 flow [2023-08-30 03:36:27,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:36:27,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:36:27,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-08-30 03:36:27,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4038876889848812 [2023-08-30 03:36:27,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-08-30 03:36:27,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-08-30 03:36:27,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:36:27,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-08-30 03:36:27,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 03:36:27,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:36:27,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:36:27,760 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 939 flow. Second operand 3 states and 561 transitions. [2023-08-30 03:36:27,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 93 transitions, 1022 flow [2023-08-30 03:36:27,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 93 transitions, 934 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-08-30 03:36:27,765 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 780 flow [2023-08-30 03:36:27,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=780, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2023-08-30 03:36:27,775 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 4 predicate places. [2023-08-30 03:36:27,775 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 780 flow [2023-08-30 03:36:27,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 03:36:27,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:36:27,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:36:27,788 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 (31)] Forceful destruction successful, exit code 0 [2023-08-30 03:36:27,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 03:36:27,987 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:36:27,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:36:27,988 INFO L85 PathProgramCache]: Analyzing trace with hash 91935326, now seen corresponding path program 5 times [2023-08-30 03:36:27,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:36:27,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537101113] [2023-08-30 03:36:27,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 03:36:27,989 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 03:36:27,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:36:27,990 INFO L229 MonitoredProcess]: Starting monitored process 32 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 03:36:27,991 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 (32)] Waiting until timeout for monitored process [2023-08-30 03:36:28,443 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:36:28,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:36:28,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-30 03:36:28,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:36:28,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:36:28,514 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:36:28,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-08-30 03:36:28,573 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-30 03:36:28,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 03:36:28,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:36:28,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:36:28,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 35 treesize of output 31 [2023-08-30 03:36:29,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:36:29,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:36:29,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:36:29,042 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:36:29,043 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:36:29,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:36:29,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:36:29,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-30 03:36:29,461 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:36:29,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 215 [2023-08-30 03:36:29,546 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 03:36:29,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:36:29,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:36:29,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537101113] [2023-08-30 03:36:29,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537101113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:36:29,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:36:29,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 03:36:29,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754053119] [2023-08-30 03:36:29,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:36:29,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 03:36:29,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:36:29,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 03:36:29,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-08-30 03:36:32,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-30 03:36:32,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 780 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 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 03:36:32,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:36:32,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-30 03:36:32,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:36:39,031 INFO L130 PetriNetUnfolder]: 205/634 cut-off events. [2023-08-30 03:36:39,031 INFO L131 PetriNetUnfolder]: For 1642/1642 co-relation queries the response was YES. [2023-08-30 03:36:39,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2471 conditions, 634 events. 205/634 cut-off events. For 1642/1642 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3902 event pairs, 65 based on Foata normal form. 3/634 useless extension candidates. Maximal degree in co-relation 2448. Up to 356 conditions per place. [2023-08-30 03:36:39,034 INFO L137 encePairwiseOnDemand]: 449/463 looper letters, 99 selfloop transitions, 45 changer transitions 0/146 dead transitions. [2023-08-30 03:36:39,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 146 transitions, 1392 flow [2023-08-30 03:36:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 03:36:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 03:36:39,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2005 transitions. [2023-08-30 03:36:39,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936775967013548 [2023-08-30 03:36:39,040 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2005 transitions. [2023-08-30 03:36:39,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2005 transitions. [2023-08-30 03:36:39,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:36:39,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2005 transitions. [2023-08-30 03:36:39,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 182.27272727272728) internal successors, (2005), 11 states have internal predecessors, (2005), 0 states have call successors, (0), 0 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 03:36:39,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 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 03:36:39,053 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 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 03:36:39,053 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 780 flow. Second operand 11 states and 2005 transitions. [2023-08-30 03:36:39,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 146 transitions, 1392 flow [2023-08-30 03:36:39,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 146 transitions, 1388 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:36:39,059 INFO L231 Difference]: Finished difference. Result has 105 places, 112 transitions, 1137 flow [2023-08-30 03:36:39,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1137, PETRI_PLACES=105, PETRI_TRANSITIONS=112} [2023-08-30 03:36:39,059 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 19 predicate places. [2023-08-30 03:36:39,059 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 112 transitions, 1137 flow [2023-08-30 03:36:39,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 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 03:36:39,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:36:39,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:36:39,073 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 (32)] Forceful destruction successful, exit code 0 [2023-08-30 03:36:39,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 03:36:39,273 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:36:39,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:36:39,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1140300478, now seen corresponding path program 6 times [2023-08-30 03:36:39,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:36:39,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382156417] [2023-08-30 03:36:39,274 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 03:36:39,274 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 03:36:39,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:36:39,275 INFO L229 MonitoredProcess]: Starting monitored process 33 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 03:36:39,277 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 (33)] Waiting until timeout for monitored process [2023-08-30 03:36:39,774 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 03:36:39,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:36:39,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 64 conjunts are in the unsatisfiable core [2023-08-30 03:36:39,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:36:39,817 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 03:36:39,817 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 03:36:39,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:36:39,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:36:39,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-30 03:36:40,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:36:40,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2023-08-30 03:36:40,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:36:40,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:36:40,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:36:40,154 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:36:40,155 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:36:40,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 65 [2023-08-30 03:36:40,312 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:36:40,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2023-08-30 03:36:40,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 110 [2023-08-30 03:36:40,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 118 [2023-08-30 03:36:42,868 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 03:36:42,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:36:42,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:36:42,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382156417] [2023-08-30 03:36:42,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382156417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:36:42,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:36:42,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 03:36:42,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738787691] [2023-08-30 03:36:42,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:36:42,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 03:36:42,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:36:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 03:36:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-08-30 03:36:54,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 03:36:55,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 463 [2023-08-30 03:36:55,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 112 transitions, 1137 flow. Second operand has 11 states, 11 states have (on average 177.9090909090909) internal successors, (1957), 11 states have internal predecessors, (1957), 0 states have call successors, (0), 0 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 03:36:55,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:36:55,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 463 [2023-08-30 03:36:55,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:37:03,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 03:37:03,874 INFO L130 PetriNetUnfolder]: 260/791 cut-off events. [2023-08-30 03:37:03,874 INFO L131 PetriNetUnfolder]: For 3058/3058 co-relation queries the response was YES. [2023-08-30 03:37:03,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3449 conditions, 791 events. 260/791 cut-off events. For 3058/3058 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5185 event pairs, 143 based on Foata normal form. 4/792 useless extension candidates. Maximal degree in co-relation 3419. Up to 613 conditions per place. [2023-08-30 03:37:03,877 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 132 selfloop transitions, 29 changer transitions 0/163 dead transitions. [2023-08-30 03:37:03,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 163 transitions, 1857 flow [2023-08-30 03:37:03,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 03:37:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 03:37:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2363 transitions. [2023-08-30 03:37:03,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39259013125103837 [2023-08-30 03:37:03,880 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2363 transitions. [2023-08-30 03:37:03,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2363 transitions. [2023-08-30 03:37:03,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:37:03,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2363 transitions. [2023-08-30 03:37:03,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 181.76923076923077) internal successors, (2363), 13 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:37:03,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 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 03:37:03,886 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 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 03:37:03,886 INFO L175 Difference]: Start difference. First operand has 105 places, 112 transitions, 1137 flow. Second operand 13 states and 2363 transitions. [2023-08-30 03:37:03,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 163 transitions, 1857 flow [2023-08-30 03:37:03,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 163 transitions, 1795 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-30 03:37:03,897 INFO L231 Difference]: Finished difference. Result has 125 places, 135 transitions, 1485 flow [2023-08-30 03:37:03,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1485, PETRI_PLACES=125, PETRI_TRANSITIONS=135} [2023-08-30 03:37:03,897 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 39 predicate places. [2023-08-30 03:37:03,897 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 135 transitions, 1485 flow [2023-08-30 03:37:03,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 177.9090909090909) internal successors, (1957), 11 states have internal predecessors, (1957), 0 states have call successors, (0), 0 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 03:37:03,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:37:03,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:37:03,910 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 (33)] Forceful destruction successful, exit code 0 [2023-08-30 03:37:04,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 03:37:04,102 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:37:04,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:37:04,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1631537234, now seen corresponding path program 7 times [2023-08-30 03:37:04,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:37:04,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788053072] [2023-08-30 03:37:04,103 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 03:37:04,103 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 03:37:04,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:37:04,104 INFO L229 MonitoredProcess]: Starting monitored process 34 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 03:37:04,106 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 (34)] Waiting until timeout for monitored process [2023-08-30 03:37:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:37:04,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 03:37:04,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:37:04,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:37:04,643 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:37:04,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-08-30 03:37:04,685 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-30 03:37:04,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 03:37:04,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:37:04,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-30 03:37:05,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:37:05,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:37:05,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:37:05,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:37:05,231 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:37:05,231 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:37:05,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:37:05,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:37:05,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-30 03:37:05,539 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:37:05,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 215 [2023-08-30 03:37:05,618 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 03:37:05,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:37:05,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:37:05,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788053072] [2023-08-30 03:37:05,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788053072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:37:05,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:37:05,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 03:37:05,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080271656] [2023-08-30 03:37:05,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:37:05,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 03:37:05,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:37:05,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 03:37:05,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-30 03:37:09,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-30 03:37:09,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 135 transitions, 1485 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 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 03:37:09,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:37:09,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-30 03:37:09,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:37:14,711 INFO L130 PetriNetUnfolder]: 257/786 cut-off events. [2023-08-30 03:37:14,711 INFO L131 PetriNetUnfolder]: For 3488/3488 co-relation queries the response was YES. [2023-08-30 03:37:14,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3615 conditions, 786 events. 257/786 cut-off events. For 3488/3488 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5176 event pairs, 153 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 3574. Up to 663 conditions per place. [2023-08-30 03:37:14,715 INFO L137 encePairwiseOnDemand]: 449/463 looper letters, 138 selfloop transitions, 22 changer transitions 0/162 dead transitions. [2023-08-30 03:37:14,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 162 transitions, 1965 flow [2023-08-30 03:37:14,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 03:37:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 03:37:14,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1989 transitions. [2023-08-30 03:37:14,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3905360298448851 [2023-08-30 03:37:14,717 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1989 transitions. [2023-08-30 03:37:14,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1989 transitions. [2023-08-30 03:37:14,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:37:14,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1989 transitions. [2023-08-30 03:37:14,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 180.8181818181818) internal successors, (1989), 11 states have internal predecessors, (1989), 0 states have call successors, (0), 0 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 03:37:14,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 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 03:37:14,723 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 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 03:37:14,723 INFO L175 Difference]: Start difference. First operand has 125 places, 135 transitions, 1485 flow. Second operand 11 states and 1989 transitions. [2023-08-30 03:37:14,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 162 transitions, 1965 flow [2023-08-30 03:37:14,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 162 transitions, 1901 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-08-30 03:37:14,737 INFO L231 Difference]: Finished difference. Result has 139 places, 140 transitions, 1551 flow [2023-08-30 03:37:14,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1551, PETRI_PLACES=139, PETRI_TRANSITIONS=140} [2023-08-30 03:37:14,738 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 53 predicate places. [2023-08-30 03:37:14,738 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 140 transitions, 1551 flow [2023-08-30 03:37:14,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 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 03:37:14,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:37:14,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:37:14,752 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 (34)] Forceful destruction successful, exit code 0 [2023-08-30 03:37:14,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 03:37:14,943 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:37:14,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:37:14,944 INFO L85 PathProgramCache]: Analyzing trace with hash 403770754, now seen corresponding path program 8 times [2023-08-30 03:37:14,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:37:14,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077524854] [2023-08-30 03:37:14,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:37:14,945 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 03:37:14,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:37:14,946 INFO L229 MonitoredProcess]: Starting monitored process 35 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 03:37:14,947 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 (35)] Waiting until timeout for monitored process [2023-08-30 03:37:15,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 03:37:15,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:37:15,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 03:37:15,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:37:15,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:37:15,511 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:37:15,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-08-30 03:37:15,549 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-30 03:37:15,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 03:37:15,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:37:15,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:37:15,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:37:15,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:37:15,909 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:37:15,909 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:37:15,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:37:15,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:37:15,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 71 treesize of output 67 [2023-08-30 03:37:16,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-30 03:37:16,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-30 03:37:16,488 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:37:16,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 215 [2023-08-30 03:37:16,624 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 03:37:16,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:37:16,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:37:16,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077524854] [2023-08-30 03:37:16,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077524854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:37:16,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:37:16,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 03:37:16,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515217880] [2023-08-30 03:37:16,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:37:16,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 03:37:16,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:37:16,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 03:37:16,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-30 03:37:20,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-30 03:37:20,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 140 transitions, 1551 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 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 03:37:20,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:37:20,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-30 03:37:20,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:37:25,863 INFO L130 PetriNetUnfolder]: 257/792 cut-off events. [2023-08-30 03:37:25,863 INFO L131 PetriNetUnfolder]: For 3519/3519 co-relation queries the response was YES. [2023-08-30 03:37:25,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3628 conditions, 792 events. 257/792 cut-off events. For 3519/3519 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5259 event pairs, 71 based on Foata normal form. 2/794 useless extension candidates. Maximal degree in co-relation 3582. Up to 364 conditions per place. [2023-08-30 03:37:25,867 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 101 selfloop transitions, 75 changer transitions 0/178 dead transitions. [2023-08-30 03:37:25,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 178 transitions, 2142 flow [2023-08-30 03:37:25,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 03:37:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 03:37:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2004 transitions. [2023-08-30 03:37:25,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3934812487728254 [2023-08-30 03:37:25,870 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2004 transitions. [2023-08-30 03:37:25,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2004 transitions. [2023-08-30 03:37:25,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:37:25,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2004 transitions. [2023-08-30 03:37:25,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 182.1818181818182) internal successors, (2004), 11 states have internal predecessors, (2004), 0 states have call successors, (0), 0 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 03:37:25,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 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 03:37:25,875 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 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 03:37:25,875 INFO L175 Difference]: Start difference. First operand has 139 places, 140 transitions, 1551 flow. Second operand 11 states and 2004 transitions. [2023-08-30 03:37:25,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 178 transitions, 2142 flow [2023-08-30 03:37:25,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 178 transitions, 1996 flow, removed 30 selfloop flow, removed 6 redundant places. [2023-08-30 03:37:25,888 INFO L231 Difference]: Finished difference. Result has 148 places, 148 transitions, 1772 flow [2023-08-30 03:37:25,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1772, PETRI_PLACES=148, PETRI_TRANSITIONS=148} [2023-08-30 03:37:25,889 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 62 predicate places. [2023-08-30 03:37:25,889 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 148 transitions, 1772 flow [2023-08-30 03:37:25,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 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 03:37:25,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:37:25,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:37:25,908 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 (35)] Forceful destruction successful, exit code 0 [2023-08-30 03:37:26,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 03:37:26,102 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-30 03:37:26,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:37:26,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1334699784, now seen corresponding path program 9 times [2023-08-30 03:37:26,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:37:26,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305005603] [2023-08-30 03:37:26,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 03:37:26,103 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 03:37:26,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:37:26,104 INFO L229 MonitoredProcess]: Starting monitored process 36 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 03:37:26,107 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 (36)] Waiting until timeout for monitored process [2023-08-30 03:37:26,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 03:37:26,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:37:26,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-30 03:37:26,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:37:26,748 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-30 03:37:26,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 03:37:26,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-30 03:37:26,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:37:26,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-30 03:37:26,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-30 03:37:27,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:37:27,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:37:27,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:37:27,096 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:37:27,096 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 03:37:27,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-30 03:37:27,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:37:27,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 71 treesize of output 67 [2023-08-30 03:37:27,378 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:37:27,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2023-08-30 03:37:27,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 110 [2023-08-30 03:37:27,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 118 [2023-08-30 03:37:29,896 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 03:37:29,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:37:29,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:37:29,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305005603] [2023-08-30 03:37:29,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305005603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:37:29,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:37:29,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 03:37:29,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598482944] [2023-08-30 03:37:29,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:37:29,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 03:37:29,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:37:29,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 03:37:29,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-30 03:37:31,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 03:37:41,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 03:37:50,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 03:37:53,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 463 [2023-08-30 03:37:53,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 148 transitions, 1772 flow. Second operand has 12 states, 12 states have (on average 175.75) internal successors, (2109), 12 states have internal predecessors, (2109), 0 states have call successors, (0), 0 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 03:37:53,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:37:53,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 463 [2023-08-30 03:37:53,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15