./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:52:10,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:52:10,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:52:10,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:52:10,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:52:10,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:52:10,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:52:10,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:52:10,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:52:10,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:52:10,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:52:10,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:52:10,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:52:10,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:52:10,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:52:10,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:52:10,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:52:10,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:52:10,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:52:10,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:52:10,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:52:10,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:52:10,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:52:10,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:52:10,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:52:10,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:52:10,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:52:10,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:52:10,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:52:10,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:52:10,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:52:10,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:52:10,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:52:10,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:52:10,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:52:10,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:52:10,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:52:10,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:52:10,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:52:10,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:52:10,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:52:10,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:52:10,173 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:52:10,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:52:10,175 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:52:10,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:52:10,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:52:10,176 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:52:10,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:52:10,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:52:10,176 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:52:10,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:52:10,177 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:52:10,177 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:52:10,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:52:10,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:52:10,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:52:10,178 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:52:10,178 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:52:10,178 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:52:10,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:52:10,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:52:10,178 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:52:10,179 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:52:10,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:52:10,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:52:10,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:52:10,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:10,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:52:10,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:52:10,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:52:10,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:52:10,180 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:52:10,180 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:52:10,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:52:10,180 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:52:10,181 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:52:10,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:52:10,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:52:10,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:52:10,413 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:52:10,414 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:52:10,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-08-29 20:52:11,406 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:52:11,639 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:52:11,639 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-08-29 20:52:11,655 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1654bf1f7/bd90eb70d97c49e4b96942ef2b1870eb/FLAG874723729 [2023-08-29 20:52:11,668 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1654bf1f7/bd90eb70d97c49e4b96942ef2b1870eb [2023-08-29 20:52:11,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:52:11,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:52:11,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:11,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:52:11,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:52:11,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c9051ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11, skipping insertion in model container [2023-08-29 20:52:11,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:52:11,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:52:12,117 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-08-29 20:52:12,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:12,157 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) [2023-08-29 20:52:12,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1fddfc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:12, skipping insertion in model container [2023-08-29 20:52:12,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:12,160 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-29 20:52:12,161 INFO L158 Benchmark]: Toolchain (without parser) took 486.52ms. Allocated memory was 71.3MB in the beginning and 100.7MB in the end (delta: 29.4MB). Free memory was 45.1MB in the beginning and 76.9MB in the end (delta: -31.8MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2023-08-29 20:52:12,161 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 71.3MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:12,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 484.06ms. Allocated memory was 71.3MB in the beginning and 100.7MB in the end (delta: 29.4MB). Free memory was 44.8MB in the beginning and 76.9MB in the end (delta: -32.0MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2023-08-29 20:52:12,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 71.3MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 484.06ms. Allocated memory was 71.3MB in the beginning and 100.7MB in the end (delta: 29.4MB). Free memory was 44.8MB in the beginning and 76.9MB in the end (delta: -32.0MB). Peak memory consumption was 20.9MB. 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-2_1-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:52:13,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:52:13,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:52:13,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:52:13,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:52:13,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:52:13,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:52:13,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:52:13,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:52:13,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:52:13,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:52:13,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:52:13,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:52:13,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:52:13,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:52:13,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:52:13,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:52:13,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:52:13,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:52:13,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:52:13,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:52:13,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:52:13,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:52:13,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:52:13,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:52:13,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:52:13,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:52:13,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:52:13,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:52:13,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:52:13,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:52:13,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:52:13,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:52:13,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:52:13,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:52:13,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:52:13,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:52:13,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:52:13,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:52:13,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:52:13,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:52:13,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 20:52:13,515 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:52:13,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:52:13,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:52:13,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:52:13,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:52:13,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:52:13,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:52:13,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:52:13,517 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:52:13,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:52:13,517 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:52:13,517 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:52:13,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:52:13,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:52:13,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:52:13,517 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:52:13,517 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:52:13,517 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:52:13,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:52:13,517 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:52:13,517 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 20:52:13,518 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 20:52:13,518 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:52:13,518 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:52:13,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:52:13,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:52:13,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:52:13,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:13,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:52:13,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:52:13,518 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 20:52:13,518 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 20:52:13,518 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:52:13,519 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:52:13,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:52:13,519 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 20:52:13,519 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:52:13,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:52:13,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:52:13,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:52:13,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:52:13,751 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:52:13,751 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:52:13,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-08-29 20:52:14,628 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:52:14,813 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:52:14,813 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-08-29 20:52:14,832 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1c386ee/898004da912a43a3bc9ad726f67fd028/FLAGe504e7e79 [2023-08-29 20:52:14,848 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1c386ee/898004da912a43a3bc9ad726f67fd028 [2023-08-29 20:52:14,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:52:14,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:52:14,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:14,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:52:14,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:52:14,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:14" (1/1) ... [2023-08-29 20:52:14,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c13ba42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:14, skipping insertion in model container [2023-08-29 20:52:14,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:14" (1/1) ... [2023-08-29 20:52:14,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:52:14,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:52:15,346 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-08-29 20:52:15,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:15,375 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-29 20:52:15,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:52:15,397 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-08-29 20:52:15,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:15,407 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:52:15,437 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-08-29 20:52:15,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:15,554 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:52:15,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:15 WrapperNode [2023-08-29 20:52:15,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:15,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:52:15,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:52:15,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:52:15,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:15" (1/1) ... [2023-08-29 20:52:15,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:15" (1/1) ... [2023-08-29 20:52:15,612 INFO L138 Inliner]: procedures = 486, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 132 [2023-08-29 20:52:15,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:52:15,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:52:15,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:52:15,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:52:15,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:15" (1/1) ... [2023-08-29 20:52:15,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:15" (1/1) ... [2023-08-29 20:52:15,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:15" (1/1) ... [2023-08-29 20:52:15,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:15" (1/1) ... [2023-08-29 20:52:15,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:15" (1/1) ... [2023-08-29 20:52:15,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:15" (1/1) ... [2023-08-29 20:52:15,638 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:15" (1/1) ... [2023-08-29 20:52:15,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:15" (1/1) ... [2023-08-29 20:52:15,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:52:15,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:52:15,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:52:15,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:52:15,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:15" (1/1) ... [2023-08-29 20:52:15,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:15,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:52:15,673 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) [2023-08-29 20:52:15,675 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 [2023-08-29 20:52:15,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:52:15,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 20:52:15,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-29 20:52:15,704 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 20:52:15,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:52:15,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 20:52:15,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:52:15,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:52:15,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-29 20:52:15,705 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-29 20:52:15,705 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-29 20:52:15,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:52:15,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 20:52:15,707 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:52:15,989 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:52:15,990 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:52:16,419 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:52:16,424 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:52:16,424 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:52:16,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:16 BoogieIcfgContainer [2023-08-29 20:52:16,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:52:16,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:52:16,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:52:16,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:52:16,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:52:14" (1/3) ... [2023-08-29 20:52:16,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548f8da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:52:16, skipping insertion in model container [2023-08-29 20:52:16,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:15" (2/3) ... [2023-08-29 20:52:16,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548f8da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:52:16, skipping insertion in model container [2023-08-29 20:52:16,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:16" (3/3) ... [2023-08-29 20:52:16,432 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2023-08-29 20:52:16,442 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:52:16,442 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-08-29 20:52:16,442 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:52:16,518 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 20:52:16,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 221 transitions, 458 flow [2023-08-29 20:52:16,635 INFO L130 PetriNetUnfolder]: 10/271 cut-off events. [2023-08-29 20:52:16,635 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 20:52:16,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 271 events. 10/271 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 685 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 155. Up to 4 conditions per place. [2023-08-29 20:52:16,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 221 transitions, 458 flow [2023-08-29 20:52:16,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 219 transitions, 450 flow [2023-08-29 20:52:16,656 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:52:16,664 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 219 transitions, 450 flow [2023-08-29 20:52:16,667 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 219 transitions, 450 flow [2023-08-29 20:52:16,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 219 transitions, 450 flow [2023-08-29 20:52:16,729 INFO L130 PetriNetUnfolder]: 10/271 cut-off events. [2023-08-29 20:52:16,729 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 20:52:16,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 271 events. 10/271 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 685 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 155. Up to 4 conditions per place. [2023-08-29 20:52:16,733 INFO L119 LiptonReduction]: Number of co-enabled transitions 5880 [2023-08-29 20:52:55,216 WARN L222 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 147 DAG size of output: 139 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:53:14,920 WARN L222 SmtUtils]: Spent 9.62s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:53:24,896 WARN L222 SmtUtils]: Spent 9.98s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:53:33,435 WARN L222 SmtUtils]: Spent 8.54s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:53:41,986 WARN L222 SmtUtils]: Spent 8.55s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:54:01,700 WARN L222 SmtUtils]: Spent 16.91s on a formula simplification. DAG size of input: 248 DAG size of output: 231 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:54:09,663 WARN L222 SmtUtils]: Spent 7.96s 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) [2023-08-29 20:54:31,531 WARN L222 SmtUtils]: Spent 21.86s on a formula simplification. DAG size of input: 254 DAG size of output: 243 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:54:42,757 WARN L222 SmtUtils]: Spent 11.22s on a formula simplification that was a NOOP. DAG size: 226 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:56:20,999 WARN L222 SmtUtils]: Spent 1.63m on a formula simplification. DAG size of input: 293 DAG size of output: 272 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:57:08,879 WARN L222 SmtUtils]: Spent 47.88s on a formula simplification that was a NOOP. DAG size: 259 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:58:53,353 WARN L222 SmtUtils]: Spent 1.74m on a formula simplification. DAG size of input: 299 DAG size of output: 278 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:59:58,568 WARN L222 SmtUtils]: Spent 1.09m on a formula simplification that was a NOOP. DAG size: 265 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:59:58,854 INFO L134 LiptonReduction]: Checked pairs total: 22744 [2023-08-29 20:59:58,855 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-08-29 20:59:58,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:59:58,866 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;@43b7b6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:59:58,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-08-29 20:59:58,867 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 20:59:58,867 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:59:58,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:59:58,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:59:58,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 20:59:58,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:59:58,871 INFO L85 PathProgramCache]: Analyzing trace with hash 763, now seen corresponding path program 1 times [2023-08-29 20:59:58,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:59:58,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087075341] [2023-08-29 20:59:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:59:58,879 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 [2023-08-29 20:59:58,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:59:58,886 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) [2023-08-29 20:59:58,888 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 [2023-08-29 20:59:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:59:58,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-29 20:59:58,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:59:58,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:59:58,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:59:58,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:59:58,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087075341] [2023-08-29 20:59:58,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087075341] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:59:58,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:59:58,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:59:58,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261442478] [2023-08-29 20:59:58,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:59:58,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:59:58,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:59:59,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:59:59,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:59:59,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 475 [2023-08-29 20:59:59,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:59:59,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:59:59,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 475 [2023-08-29 20:59:59,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:59:59,922 INFO L130 PetriNetUnfolder]: 778/2031 cut-off events. [2023-08-29 20:59:59,922 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-29 20:59:59,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 2031 events. 778/2031 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 16970 event pairs, 777 based on Foata normal form. 0/1175 useless extension candidates. Maximal degree in co-relation 3235. Up to 1326 conditions per place. [2023-08-29 20:59:59,931 INFO L137 encePairwiseOnDemand]: 457/475 looper letters, 44 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2023-08-29 20:59:59,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 232 flow [2023-08-29 20:59:59,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:59:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:59:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 472 transitions. [2023-08-29 20:59:59,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968421052631579 [2023-08-29 20:59:59,943 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 472 transitions. [2023-08-29 20:59:59,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 472 transitions. [2023-08-29 20:59:59,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:59:59,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 472 transitions. [2023-08-29 20:59:59,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 236.0) internal successors, (472), 2 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:59:59,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:59:59,951 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:59:59,952 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 180 flow. Second operand 2 states and 472 transitions. [2023-08-29 20:59:59,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 232 flow [2023-08-29 20:59:59,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 20:59:59,957 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 136 flow [2023-08-29 20:59:59,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, 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} [2023-08-29 20:59:59,960 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2023-08-29 20:59:59,960 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 136 flow [2023-08-29 20:59:59,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:59:59,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:59:59,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 20:59:59,971 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 [2023-08-29 21:00:00,168 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 [2023-08-29 21:00:00,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:00,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash 24726, now seen corresponding path program 1 times [2023-08-29 21:00:00,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:00,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92019968] [2023-08-29 21:00:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:00,171 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 [2023-08-29 21:00:00,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:00,172 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) [2023-08-29 21:00:00,174 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 [2023-08-29 21:00:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:00,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 21:00:00,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:00,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:00,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:00,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92019968] [2023-08-29 21:00:00,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92019968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:00,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:00,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:00:00,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253863147] [2023-08-29 21:00:00,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:00,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:00,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:00,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:00,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:00,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 475 [2023-08-29 21:00:00,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:00,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:00,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 475 [2023-08-29 21:00:00,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:01,359 INFO L130 PetriNetUnfolder]: 777/1572 cut-off events. [2023-08-29 21:00:01,359 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:00:01,361 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 123. Compared 9986 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. [2023-08-29 21:00:01,365 INFO L137 encePairwiseOnDemand]: 471/475 looper letters, 54 selfloop transitions, 1 changer transitions 1/78 dead transitions. [2023-08-29 21:00:01,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 272 flow [2023-08-29 21:00:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:01,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2023-08-29 21:00:01,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46456140350877195 [2023-08-29 21:00:01,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2023-08-29 21:00:01,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2023-08-29 21:00:01,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:01,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2023-08-29 21:00:01,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:01,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:01,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:01,374 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 136 flow. Second operand 3 states and 662 transitions. [2023-08-29 21:00:01,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 272 flow [2023-08-29 21:00:01,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:00:01,376 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 145 flow [2023-08-29 21:00:01,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, 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} [2023-08-29 21:00:01,377 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2023-08-29 21:00:01,377 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 145 flow [2023-08-29 21:00:01,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:01,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:01,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:00:01,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:01,586 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 [2023-08-29 21:00:01,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:01,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:01,589 INFO L85 PathProgramCache]: Analyzing trace with hash 763231, now seen corresponding path program 1 times [2023-08-29 21:00:01,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:01,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220707504] [2023-08-29 21:00:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:01,590 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 [2023-08-29 21:00:01,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:01,591 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) [2023-08-29 21:00:01,593 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 [2023-08-29 21:00:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:01,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 21:00:01,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:01,701 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 [2023-08-29 21:00:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:01,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:01,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:01,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220707504] [2023-08-29 21:00:01,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220707504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:01,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:01,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:00:01,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621370438] [2023-08-29 21:00:01,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:01,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:01,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:01,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:01,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 475 [2023-08-29 21:00:01,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:01,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:01,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 475 [2023-08-29 21:00:01,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:02,803 INFO L130 PetriNetUnfolder]: 777/1904 cut-off events. [2023-08-29 21:00:02,804 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-29 21:00:02,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3335 conditions, 1904 events. 777/1904 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 14683 event pairs, 687 based on Foata normal form. 0/1160 useless extension candidates. Maximal degree in co-relation 3330. Up to 1181 conditions per place. [2023-08-29 21:00:02,811 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 48 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2023-08-29 21:00:02,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 73 transitions, 265 flow [2023-08-29 21:00:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-29 21:00:02,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4343859649122807 [2023-08-29 21:00:02,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-29 21:00:02,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-29 21:00:02,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:02,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-29 21:00:02,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:02,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:02,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:02,819 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 145 flow. Second operand 3 states and 619 transitions. [2023-08-29 21:00:02,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 73 transitions, 265 flow [2023-08-29 21:00:02,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:00:02,821 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 150 flow [2023-08-29 21:00:02,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-08-29 21:00:02,821 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-29 21:00:02,822 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 150 flow [2023-08-29 21:00:02,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:02,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:02,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:00:02,845 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 [2023-08-29 21:00:03,030 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 [2023-08-29 21:00:03,033 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:03,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:03,033 INFO L85 PathProgramCache]: Analyzing trace with hash 763232, now seen corresponding path program 1 times [2023-08-29 21:00:03,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:03,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376983405] [2023-08-29 21:00:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:03,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:03,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:03,035 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) [2023-08-29 21:00:03,036 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 [2023-08-29 21:00:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:03,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 21:00:03,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:03,152 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 [2023-08-29 21:00:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:03,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:03,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:03,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376983405] [2023-08-29 21:00:03,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376983405] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:03,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:03,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:00:03,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614540103] [2023-08-29 21:00:03,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:03,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:03,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:03,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:03,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:03,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 475 [2023-08-29 21:00:03,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:03,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:03,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 475 [2023-08-29 21:00:03,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:04,375 INFO L130 PetriNetUnfolder]: 597/1426 cut-off events. [2023-08-29 21:00:04,375 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-29 21:00:04,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 1426 events. 597/1426 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10140 event pairs, 357 based on Foata normal form. 29/963 useless extension candidates. Maximal degree in co-relation 2590. Up to 617 conditions per place. [2023-08-29 21:00:04,381 INFO L137 encePairwiseOnDemand]: 465/475 looper letters, 53 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2023-08-29 21:00:04,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 300 flow [2023-08-29 21:00:04,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:04,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:04,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2023-08-29 21:00:04,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45473684210526316 [2023-08-29 21:00:04,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2023-08-29 21:00:04,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2023-08-29 21:00:04,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:04,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2023-08-29 21:00:04,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:04,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:04,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:04,388 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 150 flow. Second operand 3 states and 648 transitions. [2023-08-29 21:00:04,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 300 flow [2023-08-29 21:00:04,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:04,390 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 170 flow [2023-08-29 21:00:04,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2023-08-29 21:00:04,390 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2023-08-29 21:00:04,391 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 170 flow [2023-08-29 21:00:04,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:04,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:04,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:00:04,406 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 [2023-08-29 21:00:04,601 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 [2023-08-29 21:00:04,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:04,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:04,602 INFO L85 PathProgramCache]: Analyzing trace with hash 763667, now seen corresponding path program 1 times [2023-08-29 21:00:04,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:04,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471667586] [2023-08-29 21:00:04,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:04,603 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 [2023-08-29 21:00:04,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:04,604 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) [2023-08-29 21:00:04,606 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 [2023-08-29 21:00:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:04,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 21:00:04,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:04,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:04,749 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 [2023-08-29 21:00:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:04,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:04,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:04,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471667586] [2023-08-29 21:00:04,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471667586] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:04,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:04,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:00:04,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001361073] [2023-08-29 21:00:04,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:04,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:04,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:04,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:04,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:04,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 475 [2023-08-29 21:00:04,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 170 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) [2023-08-29 21:00:04,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:04,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 475 [2023-08-29 21:00:04,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:05,742 INFO L130 PetriNetUnfolder]: 588/1384 cut-off events. [2023-08-29 21:00:05,742 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-29 21:00:05,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2732 conditions, 1384 events. 588/1384 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9690 event pairs, 588 based on Foata normal form. 0/903 useless extension candidates. Maximal degree in co-relation 2726. Up to 1016 conditions per place. [2023-08-29 21:00:05,747 INFO L137 encePairwiseOnDemand]: 471/475 looper letters, 40 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-29 21:00:05,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 250 flow [2023-08-29 21:00:05,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:05,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-08-29 21:00:05,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554385964912281 [2023-08-29 21:00:05,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-08-29 21:00:05,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-08-29 21:00:05,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:05,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-08-29 21:00:05,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:05,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:05,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:05,756 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 170 flow. Second operand 3 states and 649 transitions. [2023-08-29 21:00:05,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 250 flow [2023-08-29 21:00:05,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:00:05,762 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 164 flow [2023-08-29 21:00:05,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-08-29 21:00:05,764 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-29 21:00:05,767 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 164 flow [2023-08-29 21:00:05,767 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) [2023-08-29 21:00:05,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:05,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:00:05,781 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 [2023-08-29 21:00:05,977 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 [2023-08-29 21:00:05,980 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:05,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:05,980 INFO L85 PathProgramCache]: Analyzing trace with hash 763666, now seen corresponding path program 1 times [2023-08-29 21:00:05,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:05,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231109696] [2023-08-29 21:00:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:05,981 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 [2023-08-29 21:00:05,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:05,982 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) [2023-08-29 21:00:05,984 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 [2023-08-29 21:00:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:06,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 21:00:06,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:06,152 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 21:00:06,153 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 [2023-08-29 21:00:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:06,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:06,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:06,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231109696] [2023-08-29 21:00:06,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231109696] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:06,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:06,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:00:06,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729044995] [2023-08-29 21:00:06,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:06,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:06,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:06,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:06,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:06,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 475 [2023-08-29 21:00:06,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 164 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) [2023-08-29 21:00:06,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:06,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 475 [2023-08-29 21:00:06,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:07,437 INFO L130 PetriNetUnfolder]: 579/1366 cut-off events. [2023-08-29 21:00:07,437 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-29 21:00:07,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 1366 events. 579/1366 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9570 event pairs, 489 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 2577. Up to 832 conditions per place. [2023-08-29 21:00:07,445 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 45 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2023-08-29 21:00:07,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 296 flow [2023-08-29 21:00:07,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:07,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:07,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-29 21:00:07,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624561403508772 [2023-08-29 21:00:07,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-29 21:00:07,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-29 21:00:07,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:07,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-29 21:00:07,451 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) [2023-08-29 21:00:07,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:07,454 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:07,454 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 164 flow. Second operand 3 states and 659 transitions. [2023-08-29 21:00:07,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 296 flow [2023-08-29 21:00:07,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:00:07,458 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 176 flow [2023-08-29 21:00:07,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2023-08-29 21:00:07,460 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -17 predicate places. [2023-08-29 21:00:07,460 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 176 flow [2023-08-29 21:00:07,462 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) [2023-08-29 21:00:07,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:07,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:00:07,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-08-29 21:00:07,672 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 [2023-08-29 21:00:07,674 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)] === [2023-08-29 21:00:07,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:07,675 INFO L85 PathProgramCache]: Analyzing trace with hash 23674839, now seen corresponding path program 1 times [2023-08-29 21:00:07,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:07,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592367782] [2023-08-29 21:00:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:07,675 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 [2023-08-29 21:00:07,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:07,676 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) [2023-08-29 21:00:07,678 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 [2023-08-29 21:00:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:07,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-29 21:00:07,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:07,807 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 [2023-08-29 21:00:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:07,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:07,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:07,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592367782] [2023-08-29 21:00:07,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592367782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:07,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:07,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:00:07,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692144450] [2023-08-29 21:00:07,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:07,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:00:07,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:07,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:00:07,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:00:08,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 475 [2023-08-29 21:00:08,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:08,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:08,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 475 [2023-08-29 21:00:08,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:10,667 INFO L130 PetriNetUnfolder]: 517/1104 cut-off events. [2023-08-29 21:00:10,667 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-29 21:00:10,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 1104 events. 517/1104 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7289 event pairs, 27 based on Foata normal form. 42/893 useless extension candidates. Maximal degree in co-relation 2239. Up to 550 conditions per place. [2023-08-29 21:00:10,671 INFO L137 encePairwiseOnDemand]: 465/475 looper letters, 69 selfloop transitions, 10 changer transitions 2/100 dead transitions. [2023-08-29 21:00:10,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 437 flow [2023-08-29 21:00:10,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 21:00:10,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 21:00:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1069 transitions. [2023-08-29 21:00:10,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45010526315789473 [2023-08-29 21:00:10,675 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1069 transitions. [2023-08-29 21:00:10,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1069 transitions. [2023-08-29 21:00:10,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:10,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1069 transitions. [2023-08-29 21:00:10,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.8) internal successors, (1069), 5 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:10,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:10,680 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:10,680 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 176 flow. Second operand 5 states and 1069 transitions. [2023-08-29 21:00:10,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 437 flow [2023-08-29 21:00:10,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 415 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:10,684 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 215 flow [2023-08-29 21:00:10,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=158, 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=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=215, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-08-29 21:00:10,684 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -13 predicate places. [2023-08-29 21:00:10,684 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 215 flow [2023-08-29 21:00:10,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:10,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:10,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:00:10,696 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 [2023-08-29 21:00:10,893 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 [2023-08-29 21:00:10,893 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)] === [2023-08-29 21:00:10,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:10,894 INFO L85 PathProgramCache]: Analyzing trace with hash 23674838, now seen corresponding path program 1 times [2023-08-29 21:00:10,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:10,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632311788] [2023-08-29 21:00:10,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:10,894 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 [2023-08-29 21:00:10,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:10,895 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) [2023-08-29 21:00:10,896 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 [2023-08-29 21:00:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:11,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 21:00:11,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:11,009 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 [2023-08-29 21:00:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:11,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:11,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:11,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632311788] [2023-08-29 21:00:11,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632311788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:11,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:11,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:00:11,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756303002] [2023-08-29 21:00:11,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:11,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:00:11,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:11,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:00:11,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:00:11,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 475 [2023-08-29 21:00:11,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 193.8) internal successors, (969), 5 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:11,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:11,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 475 [2023-08-29 21:00:11,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:14,151 INFO L130 PetriNetUnfolder]: 561/1093 cut-off events. [2023-08-29 21:00:14,152 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-29 21:00:14,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2558 conditions, 1093 events. 561/1093 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6467 event pairs, 90 based on Foata normal form. 0/937 useless extension candidates. Maximal degree in co-relation 2550. Up to 648 conditions per place. [2023-08-29 21:00:14,156 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 70 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2023-08-29 21:00:14,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 105 transitions, 478 flow [2023-08-29 21:00:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:00:14,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:00:14,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1249 transitions. [2023-08-29 21:00:14,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382456140350877 [2023-08-29 21:00:14,159 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1249 transitions. [2023-08-29 21:00:14,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1249 transitions. [2023-08-29 21:00:14,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:14,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1249 transitions. [2023-08-29 21:00:14,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.16666666666666) internal successors, (1249), 6 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:14,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:14,164 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:14,165 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 215 flow. Second operand 6 states and 1249 transitions. [2023-08-29 21:00:14,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 105 transitions, 478 flow [2023-08-29 21:00:14,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 454 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-29 21:00:14,168 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 293 flow [2023-08-29 21:00:14,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2023-08-29 21:00:14,170 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -7 predicate places. [2023-08-29 21:00:14,170 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 293 flow [2023-08-29 21:00:14,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 193.8) internal successors, (969), 5 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:14,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:14,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:00:14,188 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 [2023-08-29 21:00:14,379 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 [2023-08-29 21:00:14,380 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)] === [2023-08-29 21:00:14,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:14,380 INFO L85 PathProgramCache]: Analyzing trace with hash 733475908, now seen corresponding path program 1 times [2023-08-29 21:00:14,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:14,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223338291] [2023-08-29 21:00:14,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:14,381 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 [2023-08-29 21:00:14,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:14,382 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) [2023-08-29 21:00:14,384 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 [2023-08-29 21:00:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:14,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 21:00:14,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:14,557 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 [2023-08-29 21:00:14,620 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 21:00:14,620 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 [2023-08-29 21:00:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:14,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:14,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:14,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223338291] [2023-08-29 21:00:14,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223338291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:14,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:14,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:00:14,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881784668] [2023-08-29 21:00:14,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:14,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:14,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:14,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:14,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:15,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 475 [2023-08-29 21:00:15,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:15,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:15,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 475 [2023-08-29 21:00:15,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:17,005 INFO L130 PetriNetUnfolder]: 713/1567 cut-off events. [2023-08-29 21:00:17,005 INFO L131 PetriNetUnfolder]: For 1188/1273 co-relation queries the response was YES. [2023-08-29 21:00:17,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3721 conditions, 1567 events. 713/1567 cut-off events. For 1188/1273 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10732 event pairs, 426 based on Foata normal form. 7/1283 useless extension candidates. Maximal degree in co-relation 3711. Up to 1022 conditions per place. [2023-08-29 21:00:17,011 INFO L137 encePairwiseOnDemand]: 466/475 looper letters, 52 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-08-29 21:00:17,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 469 flow [2023-08-29 21:00:17,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:17,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-08-29 21:00:17,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392982456140351 [2023-08-29 21:00:17,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-08-29 21:00:17,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-08-29 21:00:17,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:17,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-08-29 21:00:17,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:17,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:17,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:17,025 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 293 flow. Second operand 3 states and 626 transitions. [2023-08-29 21:00:17,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 469 flow [2023-08-29 21:00:17,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:00:17,027 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 379 flow [2023-08-29 21:00:17,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=78, 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=379, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-08-29 21:00:17,028 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2023-08-29 21:00:17,028 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 379 flow [2023-08-29 21:00:17,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:17,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:17,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:00:17,041 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 [2023-08-29 21:00:17,239 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 [2023-08-29 21:00:17,239 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)] === [2023-08-29 21:00:17,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1262917302, now seen corresponding path program 1 times [2023-08-29 21:00:17,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:17,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515161156] [2023-08-29 21:00:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:17,240 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 [2023-08-29 21:00:17,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:17,241 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) [2023-08-29 21:00:17,244 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 (11)] Waiting until timeout for monitored process [2023-08-29 21:00:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:17,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 21:00:17,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:17,405 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:00:17,405 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:00:17,406 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:00:17,407 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 [2023-08-29 21:00:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:17,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:17,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:17,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515161156] [2023-08-29 21:00:17,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515161156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:17,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:17,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:00:17,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759183161] [2023-08-29 21:00:17,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:17,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:17,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:17,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:17,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:17,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 475 [2023-08-29 21:00:17,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:17,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:17,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 475 [2023-08-29 21:00:17,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:19,534 INFO L130 PetriNetUnfolder]: 910/1868 cut-off events. [2023-08-29 21:00:19,535 INFO L131 PetriNetUnfolder]: For 2362/2483 co-relation queries the response was YES. [2023-08-29 21:00:19,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5433 conditions, 1868 events. 910/1868 cut-off events. For 2362/2483 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12422 event pairs, 501 based on Foata normal form. 7/1606 useless extension candidates. Maximal degree in co-relation 5421. Up to 1261 conditions per place. [2023-08-29 21:00:19,547 INFO L137 encePairwiseOnDemand]: 466/475 looper letters, 58 selfloop transitions, 17 changer transitions 0/95 dead transitions. [2023-08-29 21:00:19,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 95 transitions, 624 flow [2023-08-29 21:00:19,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2023-08-29 21:00:19,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2023-08-29 21:00:19,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2023-08-29 21:00:19,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2023-08-29 21:00:19,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:19,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2023-08-29 21:00:19,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:19,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:19,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:19,553 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 379 flow. Second operand 3 states and 627 transitions. [2023-08-29 21:00:19,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 95 transitions, 624 flow [2023-08-29 21:00:19,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 95 transitions, 592 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:19,557 INFO L231 Difference]: Finished difference. Result has 84 places, 89 transitions, 511 flow [2023-08-29 21:00:19,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=80, 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=511, PETRI_PLACES=84, PETRI_TRANSITIONS=89} [2023-08-29 21:00:19,558 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -2 predicate places. [2023-08-29 21:00:19,558 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 89 transitions, 511 flow [2023-08-29 21:00:19,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:19,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:19,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:00:19,569 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 [2023-08-29 21:00:19,759 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 [2023-08-29 21:00:19,759 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:19,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:19,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1276002438, now seen corresponding path program 1 times [2023-08-29 21:00:19,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:19,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396062436] [2023-08-29 21:00:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:19,760 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 [2023-08-29 21:00:19,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:19,761 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) [2023-08-29 21:00:19,762 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 [2023-08-29 21:00:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:19,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 21:00:19,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:20,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:20,015 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 [2023-08-29 21:00:20,033 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 21:00:20,033 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 [2023-08-29 21:00:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:20,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:20,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:20,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396062436] [2023-08-29 21:00:20,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396062436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:20,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:20,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:00:20,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648816580] [2023-08-29 21:00:20,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:20,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:20,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:20,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:20,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:20,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 475 [2023-08-29 21:00:20,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 89 transitions, 511 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) [2023-08-29 21:00:20,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:20,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 475 [2023-08-29 21:00:20,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:21,271 INFO L130 PetriNetUnfolder]: 734/1591 cut-off events. [2023-08-29 21:00:21,271 INFO L131 PetriNetUnfolder]: For 2928/3052 co-relation queries the response was YES. [2023-08-29 21:00:21,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5098 conditions, 1591 events. 734/1591 cut-off events. For 2928/3052 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10616 event pairs, 380 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 5085. Up to 919 conditions per place. [2023-08-29 21:00:21,277 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 53 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2023-08-29 21:00:21,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 93 transitions, 655 flow [2023-08-29 21:00:21,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-08-29 21:00:21,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45403508771929824 [2023-08-29 21:00:21,280 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-08-29 21:00:21,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-08-29 21:00:21,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:21,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-08-29 21:00:21,282 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) [2023-08-29 21:00:21,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:21,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:21,284 INFO L175 Difference]: Start difference. First operand has 84 places, 89 transitions, 511 flow. Second operand 3 states and 647 transitions. [2023-08-29 21:00:21,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 93 transitions, 655 flow [2023-08-29 21:00:21,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 93 transitions, 621 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:21,289 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 483 flow [2023-08-29 21:00:21,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2023-08-29 21:00:21,289 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2023-08-29 21:00:21,289 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 483 flow [2023-08-29 21:00:21,290 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) [2023-08-29 21:00:21,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:21,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:00:21,309 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 [2023-08-29 21:00:21,500 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 [2023-08-29 21:00:21,501 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:21,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:21,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1276003531, now seen corresponding path program 1 times [2023-08-29 21:00:21,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:21,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331620239] [2023-08-29 21:00:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:21,501 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 [2023-08-29 21:00:21,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:21,502 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) [2023-08-29 21:00:21,504 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 [2023-08-29 21:00:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:21,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-29 21:00:21,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:21,634 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 [2023-08-29 21:00:21,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:21,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:21,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:21,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331620239] [2023-08-29 21:00:21,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331620239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:21,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:21,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:00:21,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083603014] [2023-08-29 21:00:21,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:21,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:00:21,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:21,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:00:21,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:00:22,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 475 [2023-08-29 21:00:22,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 483 flow. Second operand has 5 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:22,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:22,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 475 [2023-08-29 21:00:22,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:24,663 INFO L130 PetriNetUnfolder]: 764/1676 cut-off events. [2023-08-29 21:00:24,663 INFO L131 PetriNetUnfolder]: For 2999/3116 co-relation queries the response was YES. [2023-08-29 21:00:24,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5131 conditions, 1676 events. 764/1676 cut-off events. For 2999/3116 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11596 event pairs, 71 based on Foata normal form. 285/1789 useless extension candidates. Maximal degree in co-relation 5118. Up to 905 conditions per place. [2023-08-29 21:00:24,668 INFO L137 encePairwiseOnDemand]: 467/475 looper letters, 101 selfloop transitions, 8 changer transitions 2/133 dead transitions. [2023-08-29 21:00:24,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 133 transitions, 982 flow [2023-08-29 21:00:24,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 21:00:24,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 21:00:24,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1065 transitions. [2023-08-29 21:00:24,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44842105263157894 [2023-08-29 21:00:24,671 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1065 transitions. [2023-08-29 21:00:24,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1065 transitions. [2023-08-29 21:00:24,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:24,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1065 transitions. [2023-08-29 21:00:24,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:24,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:24,675 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:24,675 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 483 flow. Second operand 5 states and 1065 transitions. [2023-08-29 21:00:24,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 133 transitions, 982 flow [2023-08-29 21:00:24,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 133 transitions, 944 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:24,681 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 498 flow [2023-08-29 21:00:24,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2023-08-29 21:00:24,682 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2023-08-29 21:00:24,682 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 498 flow [2023-08-29 21:00:24,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:24,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:24,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:00:24,693 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 [2023-08-29 21:00:24,893 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 [2023-08-29 21:00:24,893 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:24,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:24,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1276003530, now seen corresponding path program 1 times [2023-08-29 21:00:24,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:24,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154364931] [2023-08-29 21:00:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:24,894 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 [2023-08-29 21:00:24,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:24,895 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) [2023-08-29 21:00:24,897 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 [2023-08-29 21:00:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:25,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 21:00:25,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:25,031 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 [2023-08-29 21:00:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:25,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:25,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:25,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154364931] [2023-08-29 21:00:25,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154364931] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:25,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:25,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:00:25,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537007145] [2023-08-29 21:00:25,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:25,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:00:25,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:25,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:00:25,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:00:25,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 475 [2023-08-29 21:00:25,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:25,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:25,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 475 [2023-08-29 21:00:25,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:27,931 INFO L130 PetriNetUnfolder]: 1131/2073 cut-off events. [2023-08-29 21:00:27,931 INFO L131 PetriNetUnfolder]: For 3592/3744 co-relation queries the response was YES. [2023-08-29 21:00:27,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7015 conditions, 2073 events. 1131/2073 cut-off events. For 3592/3744 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12291 event pairs, 210 based on Foata normal form. 190/2105 useless extension candidates. Maximal degree in co-relation 7000. Up to 1117 conditions per place. [2023-08-29 21:00:27,938 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 101 selfloop transitions, 25 changer transitions 0/143 dead transitions. [2023-08-29 21:00:27,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 143 transitions, 1045 flow [2023-08-29 21:00:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:00:27,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:00:27,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1253 transitions. [2023-08-29 21:00:27,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43964912280701757 [2023-08-29 21:00:27,941 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1253 transitions. [2023-08-29 21:00:27,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1253 transitions. [2023-08-29 21:00:27,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:27,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1253 transitions. [2023-08-29 21:00:27,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.83333333333334) internal successors, (1253), 6 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:27,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:27,946 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:27,946 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 498 flow. Second operand 6 states and 1253 transitions. [2023-08-29 21:00:27,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 143 transitions, 1045 flow [2023-08-29 21:00:27,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 143 transitions, 1036 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:27,951 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 671 flow [2023-08-29 21:00:27,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=671, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2023-08-29 21:00:27,952 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2023-08-29 21:00:27,952 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 671 flow [2023-08-29 21:00:27,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:27,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:27,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:00:27,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:28,161 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 [2023-08-29 21:00:28,162 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:28,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:28,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1812195110, now seen corresponding path program 1 times [2023-08-29 21:00:28,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:28,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804763511] [2023-08-29 21:00:28,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:28,163 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 [2023-08-29 21:00:28,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:28,164 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) [2023-08-29 21:00:28,167 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 [2023-08-29 21:00:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:28,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 21:00:28,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:28,430 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_191| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_191|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_191| (_ bv0 1))))) is different from true [2023-08-29 21:00:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:28,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:28,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:28,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804763511] [2023-08-29 21:00:28,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804763511] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:28,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:28,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:00:28,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967426300] [2023-08-29 21:00:28,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:28,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:00:28,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:28,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:00:28,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-08-29 21:00:28,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 475 [2023-08-29 21:00:28,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 671 flow. Second operand has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:28,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:28,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 475 [2023-08-29 21:00:28,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:29,806 INFO L130 PetriNetUnfolder]: 1848/3148 cut-off events. [2023-08-29 21:00:29,807 INFO L131 PetriNetUnfolder]: For 7482/7482 co-relation queries the response was YES. [2023-08-29 21:00:29,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11490 conditions, 3148 events. 1848/3148 cut-off events. For 7482/7482 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 17859 event pairs, 757 based on Foata normal form. 0/2854 useless extension candidates. Maximal degree in co-relation 11472. Up to 1526 conditions per place. [2023-08-29 21:00:29,818 INFO L137 encePairwiseOnDemand]: 453/475 looper letters, 84 selfloop transitions, 32 changer transitions 2/125 dead transitions. [2023-08-29 21:00:29,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 125 transitions, 1064 flow [2023-08-29 21:00:29,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:00:29,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:00:29,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 636 transitions. [2023-08-29 21:00:29,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33473684210526317 [2023-08-29 21:00:29,821 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 636 transitions. [2023-08-29 21:00:29,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 636 transitions. [2023-08-29 21:00:29,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:29,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 636 transitions. [2023-08-29 21:00:29,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.0) internal successors, (636), 4 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) [2023-08-29 21:00:29,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:29,824 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:29,824 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 671 flow. Second operand 4 states and 636 transitions. [2023-08-29 21:00:29,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 125 transitions, 1064 flow [2023-08-29 21:00:29,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 125 transitions, 1055 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:29,833 INFO L231 Difference]: Finished difference. Result has 95 places, 111 transitions, 862 flow [2023-08-29 21:00:29,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=91, 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=862, PETRI_PLACES=95, PETRI_TRANSITIONS=111} [2023-08-29 21:00:29,833 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 9 predicate places. [2023-08-29 21:00:29,834 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 111 transitions, 862 flow [2023-08-29 21:00:29,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:29,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:29,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:00:29,844 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 [2023-08-29 21:00:30,043 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 [2023-08-29 21:00:30,044 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:30,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:30,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1951799817, now seen corresponding path program 1 times [2023-08-29 21:00:30,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:30,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856747297] [2023-08-29 21:00:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:30,045 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 [2023-08-29 21:00:30,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:30,046 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) [2023-08-29 21:00:30,048 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 [2023-08-29 21:00:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:30,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-29 21:00:30,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:30,251 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 [2023-08-29 21:00:30,258 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 [2023-08-29 21:00:30,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:30,368 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 [2023-08-29 21:00:30,377 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:00:30,377 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 [2023-08-29 21:00:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:30,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:30,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:30,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856747297] [2023-08-29 21:00:30,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856747297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:30,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:30,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:00:30,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372401559] [2023-08-29 21:00:30,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:30,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:00:30,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:30,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:00:30,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:00:31,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 475 [2023-08-29 21:00:31,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 862 flow. Second operand has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:31,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:31,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 475 [2023-08-29 21:00:31,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:33,224 INFO L130 PetriNetUnfolder]: 1647/2969 cut-off events. [2023-08-29 21:00:33,224 INFO L131 PetriNetUnfolder]: For 8742/8880 co-relation queries the response was YES. [2023-08-29 21:00:33,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12002 conditions, 2969 events. 1647/2969 cut-off events. For 8742/8880 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18600 event pairs, 514 based on Foata normal form. 26/2798 useless extension candidates. Maximal degree in co-relation 11982. Up to 1585 conditions per place. [2023-08-29 21:00:33,234 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 102 selfloop transitions, 26 changer transitions 0/154 dead transitions. [2023-08-29 21:00:33,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 154 transitions, 1373 flow [2023-08-29 21:00:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 21:00:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 21:00:33,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1406 transitions. [2023-08-29 21:00:33,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228571428571429 [2023-08-29 21:00:33,239 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1406 transitions. [2023-08-29 21:00:33,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1406 transitions. [2023-08-29 21:00:33,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:33,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1406 transitions. [2023-08-29 21:00:33,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 200.85714285714286) internal successors, (1406), 7 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:33,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:33,244 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:33,244 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 862 flow. Second operand 7 states and 1406 transitions. [2023-08-29 21:00:33,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 154 transitions, 1373 flow [2023-08-29 21:00:33,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 154 transitions, 1287 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-29 21:00:33,256 INFO L231 Difference]: Finished difference. Result has 94 places, 109 transitions, 854 flow [2023-08-29 21:00:33,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=854, PETRI_PLACES=94, PETRI_TRANSITIONS=109} [2023-08-29 21:00:33,256 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2023-08-29 21:00:33,269 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 109 transitions, 854 flow [2023-08-29 21:00:33,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:33,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:33,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:00:33,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:33,480 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 [2023-08-29 21:00:33,480 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)] === [2023-08-29 21:00:33,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2121042600, now seen corresponding path program 1 times [2023-08-29 21:00:33,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:33,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374376154] [2023-08-29 21:00:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:33,481 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 [2023-08-29 21:00:33,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:33,482 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) [2023-08-29 21:00:33,484 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 [2023-08-29 21:00:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:33,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-29 21:00:33,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:33,682 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 [2023-08-29 21:00:33,686 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 [2023-08-29 21:00:33,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:33,760 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 [2023-08-29 21:00:33,770 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:00:33,770 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 [2023-08-29 21:00:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:33,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:33,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:33,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374376154] [2023-08-29 21:00:33,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374376154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:33,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:33,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:00:33,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961066099] [2023-08-29 21:00:33,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:33,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:00:33,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:33,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:00:33,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:00:34,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 475 [2023-08-29 21:00:34,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 109 transitions, 854 flow. Second operand has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:34,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:34,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 475 [2023-08-29 21:00:34,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:37,672 INFO L130 PetriNetUnfolder]: 2035/3643 cut-off events. [2023-08-29 21:00:37,672 INFO L131 PetriNetUnfolder]: For 11267/11447 co-relation queries the response was YES. [2023-08-29 21:00:37,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15103 conditions, 3643 events. 2035/3643 cut-off events. For 11267/11447 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 23693 event pairs, 634 based on Foata normal form. 34/3522 useless extension candidates. Maximal degree in co-relation 15083. Up to 2081 conditions per place. [2023-08-29 21:00:37,687 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 127 selfloop transitions, 26 changer transitions 0/168 dead transitions. [2023-08-29 21:00:37,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 168 transitions, 1538 flow [2023-08-29 21:00:37,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 21:00:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 21:00:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1419 transitions. [2023-08-29 21:00:37,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267669172932331 [2023-08-29 21:00:37,691 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1419 transitions. [2023-08-29 21:00:37,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1419 transitions. [2023-08-29 21:00:37,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:37,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1419 transitions. [2023-08-29 21:00:37,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.71428571428572) internal successors, (1419), 7 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:37,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:37,696 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:37,697 INFO L175 Difference]: Start difference. First operand has 94 places, 109 transitions, 854 flow. Second operand 7 states and 1419 transitions. [2023-08-29 21:00:37,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 168 transitions, 1538 flow [2023-08-29 21:00:37,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 168 transitions, 1499 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 21:00:37,712 INFO L231 Difference]: Finished difference. Result has 93 places, 107 transitions, 893 flow [2023-08-29 21:00:37,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=893, PETRI_PLACES=93, PETRI_TRANSITIONS=107} [2023-08-29 21:00:37,713 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2023-08-29 21:00:37,713 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 107 transitions, 893 flow [2023-08-29 21:00:37,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:37,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:37,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:00:37,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:37,923 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 [2023-08-29 21:00:37,924 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:37,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:37,924 INFO L85 PathProgramCache]: Analyzing trace with hash -864406294, now seen corresponding path program 1 times [2023-08-29 21:00:37,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:37,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861114428] [2023-08-29 21:00:37,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:37,925 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 [2023-08-29 21:00:37,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:37,925 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) [2023-08-29 21:00:37,927 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 [2023-08-29 21:00:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:38,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 21:00:38,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:38,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:38,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:38,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861114428] [2023-08-29 21:00:38,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861114428] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:38,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:38,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:00:38,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603859897] [2023-08-29 21:00:38,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:38,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:38,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:38,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:38,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:38,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 475 [2023-08-29 21:00:38,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 107 transitions, 893 flow. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:38,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:38,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 475 [2023-08-29 21:00:38,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:39,250 INFO L130 PetriNetUnfolder]: 107/263 cut-off events. [2023-08-29 21:00:39,250 INFO L131 PetriNetUnfolder]: For 613/663 co-relation queries the response was YES. [2023-08-29 21:00:39,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 263 events. 107/263 cut-off events. For 613/663 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1066 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. [2023-08-29 21:00:39,252 INFO L137 encePairwiseOnDemand]: 473/475 looper letters, 41 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2023-08-29 21:00:39,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 54 transitions, 437 flow [2023-08-29 21:00:39,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:39,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:39,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 639 transitions. [2023-08-29 21:00:39,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44842105263157894 [2023-08-29 21:00:39,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 639 transitions. [2023-08-29 21:00:39,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 639 transitions. [2023-08-29 21:00:39,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:39,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 639 transitions. [2023-08-29 21:00:39,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:39,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:39,273 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:39,273 INFO L175 Difference]: Start difference. First operand has 93 places, 107 transitions, 893 flow. Second operand 3 states and 639 transitions. [2023-08-29 21:00:39,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 54 transitions, 437 flow [2023-08-29 21:00:39,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 268 flow, removed 25 selfloop flow, removed 21 redundant places. [2023-08-29 21:00:39,274 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 152 flow [2023-08-29 21:00:39,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=59, 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=152, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2023-08-29 21:00:39,275 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -25 predicate places. [2023-08-29 21:00:39,275 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 152 flow [2023-08-29 21:00:39,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:39,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:39,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:00:39,288 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 [2023-08-29 21:00:39,486 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 [2023-08-29 21:00:39,486 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:39,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:39,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1441520669, now seen corresponding path program 1 times [2023-08-29 21:00:39,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:39,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169846406] [2023-08-29 21:00:39,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:39,487 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 [2023-08-29 21:00:39,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:39,488 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) [2023-08-29 21:00:39,491 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 [2023-08-29 21:00:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:39,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 21:00:39,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:39,660 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 [2023-08-29 21:00:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:39,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:39,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:39,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169846406] [2023-08-29 21:00:39,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169846406] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:39,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:39,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:00:39,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067671511] [2023-08-29 21:00:39,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:39,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:39,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:39,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:39,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 475 [2023-08-29 21:00:39,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 152 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) [2023-08-29 21:00:39,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:39,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 475 [2023-08-29 21:00:39,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:40,997 INFO L130 PetriNetUnfolder]: 102/254 cut-off events. [2023-08-29 21:00:40,998 INFO L131 PetriNetUnfolder]: For 158/162 co-relation queries the response was YES. [2023-08-29 21:00:40,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 254 events. 102/254 cut-off events. For 158/162 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 983 event pairs, 55 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 666. Up to 120 conditions per place. [2023-08-29 21:00:40,999 INFO L137 encePairwiseOnDemand]: 466/475 looper letters, 30 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2023-08-29 21:00:40,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 248 flow [2023-08-29 21:00:40,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:40,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:41,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-29 21:00:41,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463157894736842 [2023-08-29 21:00:41,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-29 21:00:41,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-29 21:00:41,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:41,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-29 21:00:41,002 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) [2023-08-29 21:00:41,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:41,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:41,003 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 152 flow. Second operand 3 states and 636 transitions. [2023-08-29 21:00:41,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 248 flow [2023-08-29 21:00:41,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 49 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:00:41,004 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 167 flow [2023-08-29 21:00:41,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=57, 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=167, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2023-08-29 21:00:41,005 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -27 predicate places. [2023-08-29 21:00:41,005 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 167 flow [2023-08-29 21:00:41,005 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) [2023-08-29 21:00:41,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:41,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:00:41,019 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 [2023-08-29 21:00:41,216 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 [2023-08-29 21:00:41,217 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:41,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:41,217 INFO L85 PathProgramCache]: Analyzing trace with hash 331639650, now seen corresponding path program 1 times [2023-08-29 21:00:41,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:41,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289801531] [2023-08-29 21:00:41,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:41,218 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 [2023-08-29 21:00:41,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:41,219 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) [2023-08-29 21:00:41,219 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 [2023-08-29 21:00:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:41,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 21:00:41,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:41,406 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 [2023-08-29 21:00:41,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:41,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:41,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:41,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289801531] [2023-08-29 21:00:41,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289801531] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:41,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:41,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:00:41,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468371120] [2023-08-29 21:00:41,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:41,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:41,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:41,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:41,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:41,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 475 [2023-08-29 21:00:41,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:41,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:41,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 475 [2023-08-29 21:00:41,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:42,953 INFO L130 PetriNetUnfolder]: 102/248 cut-off events. [2023-08-29 21:00:42,953 INFO L131 PetriNetUnfolder]: For 192/196 co-relation queries the response was YES. [2023-08-29 21:00:42,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 248 events. 102/248 cut-off events. For 192/196 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 952 event pairs, 55 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 686. Up to 120 conditions per place. [2023-08-29 21:00:42,954 INFO L137 encePairwiseOnDemand]: 466/475 looper letters, 30 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2023-08-29 21:00:42,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 47 transitions, 263 flow [2023-08-29 21:00:42,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2023-08-29 21:00:42,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2023-08-29 21:00:42,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2023-08-29 21:00:42,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2023-08-29 21:00:42,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:42,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2023-08-29 21:00:42,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:42,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:42,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:42,959 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 167 flow. Second operand 3 states and 627 transitions. [2023-08-29 21:00:42,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 47 transitions, 263 flow [2023-08-29 21:00:42,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:42,960 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 163 flow [2023-08-29 21:00:42,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=163, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-08-29 21:00:42,961 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -29 predicate places. [2023-08-29 21:00:42,961 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 163 flow [2023-08-29 21:00:42,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:42,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:42,961 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] [2023-08-29 21:00:42,980 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 [2023-08-29 21:00:43,171 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 [2023-08-29 21:00:43,171 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:43,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:43,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1735467703, now seen corresponding path program 1 times [2023-08-29 21:00:43,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:43,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878948683] [2023-08-29 21:00:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:43,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:43,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:43,173 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) [2023-08-29 21:00:43,174 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 [2023-08-29 21:00:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:43,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-29 21:00:43,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:43,487 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 [2023-08-29 21:00:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:43,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:43,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:43,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878948683] [2023-08-29 21:00:43,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878948683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:43,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:43,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 21:00:43,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196153909] [2023-08-29 21:00:43,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:43,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:00:43,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:43,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:00:43,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:00:43,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 475 [2023-08-29 21:00:43,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:43,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:43,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 475 [2023-08-29 21:00:43,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:45,172 INFO L130 PetriNetUnfolder]: 114/283 cut-off events. [2023-08-29 21:00:45,172 INFO L131 PetriNetUnfolder]: For 233/239 co-relation queries the response was YES. [2023-08-29 21:00:45,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 283 events. 114/283 cut-off events. For 233/239 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1237 event pairs, 47 based on Foata normal form. 11/282 useless extension candidates. Maximal degree in co-relation 784. Up to 123 conditions per place. [2023-08-29 21:00:45,173 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 44 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2023-08-29 21:00:45,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 341 flow [2023-08-29 21:00:45,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:00:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:00:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1246 transitions. [2023-08-29 21:00:45,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43719298245614036 [2023-08-29 21:00:45,175 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1246 transitions. [2023-08-29 21:00:45,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1246 transitions. [2023-08-29 21:00:45,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:45,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1246 transitions. [2023-08-29 21:00:45,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:45,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:45,187 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:45,187 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 163 flow. Second operand 6 states and 1246 transitions. [2023-08-29 21:00:45,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 341 flow [2023-08-29 21:00:45,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:45,188 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 193 flow [2023-08-29 21:00:45,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-29 21:00:45,188 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -24 predicate places. [2023-08-29 21:00:45,189 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 193 flow [2023-08-29 21:00:45,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:45,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:45,189 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] [2023-08-29 21:00:45,203 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 [2023-08-29 21:00:45,393 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 [2023-08-29 21:00:45,393 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:45,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:45,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1088051269, now seen corresponding path program 2 times [2023-08-29 21:00:45,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:45,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137437601] [2023-08-29 21:00:45,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:00:45,394 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 [2023-08-29 21:00:45,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:45,395 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) [2023-08-29 21:00:45,396 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 [2023-08-29 21:00:45,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:00:45,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:00:45,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-29 21:00:45,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:45,722 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 [2023-08-29 21:00:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:45,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:45,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:45,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137437601] [2023-08-29 21:00:45,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137437601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:45,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:45,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 21:00:45,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55147216] [2023-08-29 21:00:45,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:45,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:00:45,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:45,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:00:45,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:00:45,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 475 [2023-08-29 21:00:45,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:45,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:45,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 475 [2023-08-29 21:00:45,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:47,837 INFO L130 PetriNetUnfolder]: 52/172 cut-off events. [2023-08-29 21:00:47,837 INFO L131 PetriNetUnfolder]: For 212/215 co-relation queries the response was YES. [2023-08-29 21:00:47,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 172 events. 52/172 cut-off events. For 212/215 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 610 event pairs, 12 based on Foata normal form. 15/179 useless extension candidates. Maximal degree in co-relation 507. Up to 77 conditions per place. [2023-08-29 21:00:47,838 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 36 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2023-08-29 21:00:47,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 56 transitions, 327 flow [2023-08-29 21:00:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 21:00:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 21:00:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1443 transitions. [2023-08-29 21:00:47,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43398496240601503 [2023-08-29 21:00:47,841 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1443 transitions. [2023-08-29 21:00:47,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1443 transitions. [2023-08-29 21:00:47,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:47,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1443 transitions. [2023-08-29 21:00:47,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 206.14285714285714) internal successors, (1443), 7 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:47,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:47,845 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:47,845 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 193 flow. Second operand 7 states and 1443 transitions. [2023-08-29 21:00:47,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 56 transitions, 327 flow [2023-08-29 21:00:47,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 292 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-08-29 21:00:47,847 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 190 flow [2023-08-29 21:00:47,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=190, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2023-08-29 21:00:47,847 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -23 predicate places. [2023-08-29 21:00:47,847 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 190 flow [2023-08-29 21:00:47,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:47,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:47,848 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] [2023-08-29 21:00:47,861 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 (22)] Ended with exit code 0 [2023-08-29 21:00:48,059 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 [2023-08-29 21:00:48,059 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:48,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:48,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1929543140, now seen corresponding path program 1 times [2023-08-29 21:00:48,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:48,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998448422] [2023-08-29 21:00:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:48,061 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 [2023-08-29 21:00:48,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:48,061 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) [2023-08-29 21:00:48,063 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 [2023-08-29 21:00:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:48,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-29 21:00:48,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:48,426 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 [2023-08-29 21:00:48,431 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 [2023-08-29 21:00:48,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:48,577 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 [2023-08-29 21:00:48,588 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:00:48,588 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 [2023-08-29 21:00:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:48,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:48,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:48,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998448422] [2023-08-29 21:00:48,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998448422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:48,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:48,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 21:00:48,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326936844] [2023-08-29 21:00:48,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:48,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 21:00:48,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:48,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 21:00:48,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-29 21:00:49,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 475 [2023-08-29 21:00:49,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:49,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:49,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 475 [2023-08-29 21:00:49,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:51,361 INFO L130 PetriNetUnfolder]: 52/167 cut-off events. [2023-08-29 21:00:51,361 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2023-08-29 21:00:51,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 167 events. 52/167 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 603 event pairs, 30 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 460. Up to 119 conditions per place. [2023-08-29 21:00:51,362 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 31 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2023-08-29 21:00:51,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 42 transitions, 252 flow [2023-08-29 21:00:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:00:51,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:00:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1110 transitions. [2023-08-29 21:00:51,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894736842105263 [2023-08-29 21:00:51,364 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1110 transitions. [2023-08-29 21:00:51,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1110 transitions. [2023-08-29 21:00:51,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:51,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1110 transitions. [2023-08-29 21:00:51,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:51,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:51,368 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:51,368 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 190 flow. Second operand 6 states and 1110 transitions. [2023-08-29 21:00:51,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 42 transitions, 252 flow [2023-08-29 21:00:51,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 42 transitions, 235 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-29 21:00:51,370 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 169 flow [2023-08-29 21:00:51,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=169, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2023-08-29 21:00:51,370 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -28 predicate places. [2023-08-29 21:00:51,370 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 169 flow [2023-08-29 21:00:51,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:51,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:51,371 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] [2023-08-29 21:00:51,386 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 (23)] Ended with exit code 0 [2023-08-29 21:00:51,583 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 [2023-08-29 21:00:51,583 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:00:51,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:51,583 INFO L85 PathProgramCache]: Analyzing trace with hash 648864423, now seen corresponding path program 3 times [2023-08-29 21:00:51,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:51,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637888654] [2023-08-29 21:00:51,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 21:00:51,584 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 [2023-08-29 21:00:51,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:51,585 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) [2023-08-29 21:00:51,585 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 [2023-08-29 21:00:52,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 21:00:52,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:00:52,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-29 21:00:52,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:52,097 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:00:52,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:00:52,118 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 [2023-08-29 21:00:52,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:52,124 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 [2023-08-29 21:00:52,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:52,328 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 [2023-08-29 21:00:52,593 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 [2023-08-29 21:00:52,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:52,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:52,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:52,782 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:00:52,783 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:00:52,784 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 [2023-08-29 21:00:53,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 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 [2023-08-29 21:00:53,215 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 [2023-08-29 21:00:53,332 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:00:53,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:00:53,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-29 21:00:53,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:53,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:53,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:53,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637888654] [2023-08-29 21:00:53,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637888654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:53,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:53,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:00:53,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775265594] [2023-08-29 21:00:53,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:53,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:00:53,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:53,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:00:53,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:00:58,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-29 21:00:58,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 169 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:58,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:58,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-29 21:00:58,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:01:06,616 INFO L130 PetriNetUnfolder]: 116/303 cut-off events. [2023-08-29 21:01:06,616 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2023-08-29 21:01:06,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 303 events. 116/303 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1234 event pairs, 20 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 824. Up to 153 conditions per place. [2023-08-29 21:01:06,617 INFO L137 encePairwiseOnDemand]: 456/475 looper letters, 79 selfloop transitions, 28 changer transitions 0/109 dead transitions. [2023-08-29 21:01:06,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 109 transitions, 671 flow [2023-08-29 21:01:06,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:01:06,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:01:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2146 transitions. [2023-08-29 21:01:06,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34753036437246965 [2023-08-29 21:01:06,621 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2146 transitions. [2023-08-29 21:01:06,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2146 transitions. [2023-08-29 21:01:06,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:01:06,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2146 transitions. [2023-08-29 21:01:06,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.07692307692307) internal successors, (2146), 13 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:06,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:06,628 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:06,628 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 169 flow. Second operand 13 states and 2146 transitions. [2023-08-29 21:01:06,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 109 transitions, 671 flow [2023-08-29 21:01:06,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 648 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 21:01:06,630 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 394 flow [2023-08-29 21:01:06,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=394, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2023-08-29 21:01:06,630 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2023-08-29 21:01:06,630 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 394 flow [2023-08-29 21:01:06,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:06,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:01:06,631 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] [2023-08-29 21:01:06,645 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 [2023-08-29 21:01:06,844 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 [2023-08-29 21:01:06,844 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:01:06,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:01:06,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1336909091, now seen corresponding path program 1 times [2023-08-29 21:01:06,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:01:06,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214530479] [2023-08-29 21:01:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:01:06,845 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 [2023-08-29 21:01:06,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:01:06,846 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) [2023-08-29 21:01:06,847 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 [2023-08-29 21:01:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:01:07,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 21:01:07,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:01:07,186 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 [2023-08-29 21:01:07,210 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 21:01:07,211 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 [2023-08-29 21:01:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:01:07,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:01:07,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:01:07,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214530479] [2023-08-29 21:01:07,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214530479] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:01:07,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:01:07,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:01:07,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970648729] [2023-08-29 21:01:07,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:01:07,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:01:07,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:01:07,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:01:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:01:07,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 475 [2023-08-29 21:01:07,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 394 flow. Second operand has 4 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:07,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:01:07,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 475 [2023-08-29 21:01:07,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:01:08,641 INFO L130 PetriNetUnfolder]: 84/263 cut-off events. [2023-08-29 21:01:08,642 INFO L131 PetriNetUnfolder]: For 362/367 co-relation queries the response was YES. [2023-08-29 21:01:08,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 263 events. 84/263 cut-off events. For 362/367 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1143 event pairs, 31 based on Foata normal form. 3/260 useless extension candidates. Maximal degree in co-relation 882. Up to 113 conditions per place. [2023-08-29 21:01:08,643 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 54 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2023-08-29 21:01:08,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 75 transitions, 563 flow [2023-08-29 21:01:08,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:01:08,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:01:08,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 765 transitions. [2023-08-29 21:01:08,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026315789473684 [2023-08-29 21:01:08,644 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 765 transitions. [2023-08-29 21:01:08,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 765 transitions. [2023-08-29 21:01:08,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:01:08,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 765 transitions. [2023-08-29 21:01:08,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:08,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:08,646 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:08,646 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 394 flow. Second operand 4 states and 765 transitions. [2023-08-29 21:01:08,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 75 transitions, 563 flow [2023-08-29 21:01:08,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 561 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:01:08,648 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 409 flow [2023-08-29 21:01:08,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2023-08-29 21:01:08,649 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2023-08-29 21:01:08,649 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 409 flow [2023-08-29 21:01:08,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:08,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:01:08,649 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] [2023-08-29 21:01:08,664 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 [2023-08-29 21:01:08,853 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 [2023-08-29 21:01:08,854 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:01:08,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:01:08,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2132073185, now seen corresponding path program 1 times [2023-08-29 21:01:08,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:01:08,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46458076] [2023-08-29 21:01:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:01:08,855 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 [2023-08-29 21:01:08,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:01:08,856 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) [2023-08-29 21:01:08,856 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 [2023-08-29 21:01:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:01:09,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-29 21:01:09,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:01:09,259 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 [2023-08-29 21:01:09,412 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:01:09,412 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 [2023-08-29 21:01:09,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:09,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:09,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:09,458 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:01:09,458 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:01:09,459 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 [2023-08-29 21:01:09,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 73 [2023-08-29 21:01:09,603 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 39 treesize of output 35 [2023-08-29 21:01:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:01:09,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:01:09,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:01:09,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46458076] [2023-08-29 21:01:09,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46458076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:01:09,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:01:09,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 21:01:09,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428025211] [2023-08-29 21:01:09,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:01:09,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 21:01:09,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:01:09,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 21:01:09,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-29 21:01:11,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 475 [2023-08-29 21:01:11,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 409 flow. Second operand has 9 states, 9 states have (on average 169.22222222222223) internal successors, (1523), 9 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:11,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:01:11,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 475 [2023-08-29 21:01:11,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:01:14,176 INFO L130 PetriNetUnfolder]: 146/416 cut-off events. [2023-08-29 21:01:14,176 INFO L131 PetriNetUnfolder]: For 584/589 co-relation queries the response was YES. [2023-08-29 21:01:14,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1417 conditions, 416 events. 146/416 cut-off events. For 584/589 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2136 event pairs, 23 based on Foata normal form. 3/413 useless extension candidates. Maximal degree in co-relation 1398. Up to 148 conditions per place. [2023-08-29 21:01:14,178 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 86 selfloop transitions, 25 changer transitions 0/115 dead transitions. [2023-08-29 21:01:14,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 115 transitions, 871 flow [2023-08-29 21:01:14,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 21:01:14,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 21:01:14,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1403 transitions. [2023-08-29 21:01:14,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3692105263157895 [2023-08-29 21:01:14,179 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1403 transitions. [2023-08-29 21:01:14,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1403 transitions. [2023-08-29 21:01:14,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:01:14,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1403 transitions. [2023-08-29 21:01:14,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 175.375) internal successors, (1403), 8 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:14,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:14,183 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:14,183 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 409 flow. Second operand 8 states and 1403 transitions. [2023-08-29 21:01:14,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 115 transitions, 871 flow [2023-08-29 21:01:14,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 115 transitions, 837 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 21:01:14,186 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 519 flow [2023-08-29 21:01:14,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=519, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2023-08-29 21:01:14,186 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2023-08-29 21:01:14,186 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 519 flow [2023-08-29 21:01:14,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 169.22222222222223) internal successors, (1523), 9 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:14,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:01:14,187 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] [2023-08-29 21:01:14,201 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 (26)] Ended with exit code 0 [2023-08-29 21:01:14,392 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 [2023-08-29 21:01:14,393 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)] === [2023-08-29 21:01:14,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:01:14,393 INFO L85 PathProgramCache]: Analyzing trace with hash 781128905, now seen corresponding path program 4 times [2023-08-29 21:01:14,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:01:14,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438479325] [2023-08-29 21:01:14,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 21:01:14,394 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 [2023-08-29 21:01:14,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:01:14,395 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) [2023-08-29 21:01:14,396 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 [2023-08-29 21:01:14,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 21:01:14,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:01:14,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-29 21:01:14,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:01:14,885 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:01:14,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:01:14,913 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 [2023-08-29 21:01:14,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:14,920 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 [2023-08-29 21:01:15,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:15,136 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 [2023-08-29 21:01:15,364 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 [2023-08-29 21:01:15,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:15,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:15,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:15,652 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:01:15,652 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:01:15,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:01:15,855 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:01:15,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:01:16,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:01:16,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:01:16,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-29 21:01:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:01:16,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:01:16,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:01:16,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438479325] [2023-08-29 21:01:16,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438479325] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:01:16,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:01:16,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:01:16,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908116135] [2023-08-29 21:01:16,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:01:16,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:01:16,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:01:16,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:01:16,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:01:21,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-29 21:01:21,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 519 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:21,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:01:21,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-29 21:01:21,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:01:28,663 INFO L130 PetriNetUnfolder]: 201/536 cut-off events. [2023-08-29 21:01:28,663 INFO L131 PetriNetUnfolder]: For 946/946 co-relation queries the response was YES. [2023-08-29 21:01:28,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 536 events. 201/536 cut-off events. For 946/946 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2907 event pairs, 69 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 1874. Up to 368 conditions per place. [2023-08-29 21:01:28,665 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 99 selfloop transitions, 30 changer transitions 0/131 dead transitions. [2023-08-29 21:01:28,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 131 transitions, 1088 flow [2023-08-29 21:01:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-29 21:01:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-29 21:01:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2299 transitions. [2023-08-29 21:01:28,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3457142857142857 [2023-08-29 21:01:28,668 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2299 transitions. [2023-08-29 21:01:28,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2299 transitions. [2023-08-29 21:01:28,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:01:28,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2299 transitions. [2023-08-29 21:01:28,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 164.21428571428572) internal successors, (2299), 14 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:28,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:28,674 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:28,674 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 519 flow. Second operand 14 states and 2299 transitions. [2023-08-29 21:01:28,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 131 transitions, 1088 flow [2023-08-29 21:01:28,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 131 transitions, 1053 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-29 21:01:28,678 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 736 flow [2023-08-29 21:01:28,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=736, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2023-08-29 21:01:28,679 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 10 predicate places. [2023-08-29 21:01:28,679 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 736 flow [2023-08-29 21:01:28,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:28,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:01:28,679 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] [2023-08-29 21:01:28,692 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 [2023-08-29 21:01:28,892 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 [2023-08-29 21:01:28,892 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:01:28,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:01:28,893 INFO L85 PathProgramCache]: Analyzing trace with hash 95122215, now seen corresponding path program 5 times [2023-08-29 21:01:28,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:01:28,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22339054] [2023-08-29 21:01:28,893 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 21:01:28,893 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 [2023-08-29 21:01:28,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:01:28,894 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) [2023-08-29 21:01:28,895 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 [2023-08-29 21:01:29,339 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:01:29,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:01:29,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-29 21:01:29,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:01:29,391 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 [2023-08-29 21:01:29,404 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:01:29,404 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 [2023-08-29 21:01:29,460 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:01:29,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:01:29,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:29,678 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 [2023-08-29 21:01:29,915 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 [2023-08-29 21:01:30,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:30,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:30,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:30,211 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:01:30,211 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:01:30,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:01:30,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 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 [2023-08-29 21:01:30,559 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 [2023-08-29 21:01:30,667 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:01:30,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:01:30,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-29 21:01:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:01:30,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:01:30,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:01:30,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22339054] [2023-08-29 21:01:30,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22339054] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:01:30,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:01:30,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:01:30,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759207072] [2023-08-29 21:01:30,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:01:30,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:01:30,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:01:30,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:01:30,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:01:35,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-29 21:01:35,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 736 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:35,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:01:35,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-29 21:01:35,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:01:43,257 INFO L130 PetriNetUnfolder]: 238/631 cut-off events. [2023-08-29 21:01:43,257 INFO L131 PetriNetUnfolder]: For 1435/1435 co-relation queries the response was YES. [2023-08-29 21:01:43,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 631 events. 238/631 cut-off events. For 1435/1435 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3687 event pairs, 80 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 2429. Up to 468 conditions per place. [2023-08-29 21:01:43,260 INFO L137 encePairwiseOnDemand]: 457/475 looper letters, 110 selfloop transitions, 30 changer transitions 0/142 dead transitions. [2023-08-29 21:01:43,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 142 transitions, 1309 flow [2023-08-29 21:01:43,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:01:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:01:43,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2139 transitions. [2023-08-29 21:01:43,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34639676113360324 [2023-08-29 21:01:43,262 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2139 transitions. [2023-08-29 21:01:43,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2139 transitions. [2023-08-29 21:01:43,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:01:43,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2139 transitions. [2023-08-29 21:01:43,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.53846153846155) internal successors, (2139), 13 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:43,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:43,267 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:43,267 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 736 flow. Second operand 13 states and 2139 transitions. [2023-08-29 21:01:43,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 142 transitions, 1309 flow [2023-08-29 21:01:43,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 142 transitions, 1277 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-29 21:01:43,272 INFO L231 Difference]: Finished difference. Result has 112 places, 109 transitions, 945 flow [2023-08-29 21:01:43,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=945, PETRI_PLACES=112, PETRI_TRANSITIONS=109} [2023-08-29 21:01:43,272 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 26 predicate places. [2023-08-29 21:01:43,272 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 109 transitions, 945 flow [2023-08-29 21:01:43,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:43,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:01:43,272 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] [2023-08-29 21:01:43,286 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 (28)] Forceful destruction successful, exit code 0 [2023-08-29 21:01:43,473 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 [2023-08-29 21:01:43,473 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:01:43,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:01:43,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1509559787, now seen corresponding path program 6 times [2023-08-29 21:01:43,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:01:43,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523838687] [2023-08-29 21:01:43,474 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 21:01:43,474 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 [2023-08-29 21:01:43,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:01:43,475 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) [2023-08-29 21:01:43,475 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 [2023-08-29 21:01:43,881 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-29 21:01:43,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:01:43,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-29 21:01:43,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:01:43,928 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 [2023-08-29 21:01:43,941 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:01:43,941 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 [2023-08-29 21:01:43,990 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:01:43,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:01:44,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:44,203 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 [2023-08-29 21:01:44,436 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 [2023-08-29 21:01:44,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:44,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:44,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:44,599 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:01:44,600 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:01:44,600 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 [2023-08-29 21:01:44,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 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 [2023-08-29 21:01:44,945 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:01:44,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:01:45,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2023-08-29 21:01:45,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:01:45,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:01:45,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:01:45,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:01:45,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523838687] [2023-08-29 21:01:45,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523838687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:01:45,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:01:45,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:01:45,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969620398] [2023-08-29 21:01:45,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:01:45,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:01:45,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:01:45,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:01:45,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:01:49,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-29 21:01:49,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 109 transitions, 945 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:49,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:01:49,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-29 21:01:49,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:01:55,624 INFO L130 PetriNetUnfolder]: 251/674 cut-off events. [2023-08-29 21:01:55,624 INFO L131 PetriNetUnfolder]: For 1997/1997 co-relation queries the response was YES. [2023-08-29 21:01:55,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2818 conditions, 674 events. 251/674 cut-off events. For 1997/1997 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4015 event pairs, 64 based on Foata normal form. 0/666 useless extension candidates. Maximal degree in co-relation 2785. Up to 440 conditions per place. [2023-08-29 21:01:55,627 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 116 selfloop transitions, 42 changer transitions 0/160 dead transitions. [2023-08-29 21:01:55,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 160 transitions, 1581 flow [2023-08-29 21:01:55,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:01:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:01:55,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2143 transitions. [2023-08-29 21:01:55,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34704453441295546 [2023-08-29 21:01:55,629 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2143 transitions. [2023-08-29 21:01:55,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2143 transitions. [2023-08-29 21:01:55,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:01:55,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2143 transitions. [2023-08-29 21:01:55,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.84615384615384) internal successors, (2143), 13 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:55,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:55,635 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:55,635 INFO L175 Difference]: Start difference. First operand has 112 places, 109 transitions, 945 flow. Second operand 13 states and 2143 transitions. [2023-08-29 21:01:55,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 160 transitions, 1581 flow [2023-08-29 21:01:55,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 160 transitions, 1511 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-08-29 21:01:55,642 INFO L231 Difference]: Finished difference. Result has 122 places, 121 transitions, 1097 flow [2023-08-29 21:01:55,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1097, PETRI_PLACES=122, PETRI_TRANSITIONS=121} [2023-08-29 21:01:55,643 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 36 predicate places. [2023-08-29 21:01:55,643 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 121 transitions, 1097 flow [2023-08-29 21:01:55,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:55,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:01:55,643 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] [2023-08-29 21:01:55,656 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 (29)] Forceful destruction successful, exit code 0 [2023-08-29 21:01:55,856 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 [2023-08-29 21:01:55,857 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)] === [2023-08-29 21:01:55,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:01:55,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2136390025, now seen corresponding path program 7 times [2023-08-29 21:01:55,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:01:55,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088034055] [2023-08-29 21:01:55,858 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 21:01:55,858 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 [2023-08-29 21:01:55,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:01:55,859 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) [2023-08-29 21:01:55,863 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 [2023-08-29 21:01:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:01:56,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-29 21:01:56,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:01:56,341 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 [2023-08-29 21:01:56,356 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:01:56,356 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 [2023-08-29 21:01:56,417 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:01:56,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:01:56,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:56,635 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 [2023-08-29 21:01:56,863 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 [2023-08-29 21:01:57,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:57,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:57,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:01:57,029 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:01:57,029 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:01:57,030 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 [2023-08-29 21:01:57,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 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 [2023-08-29 21:01:57,458 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:01:57,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:01:57,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:01:57,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-29 21:01:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:01:57,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:01:57,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:01:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088034055] [2023-08-29 21:01:57,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088034055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:01:57,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:01:57,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:01:57,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656151333] [2023-08-29 21:01:57,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:01:57,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:01:57,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:01:57,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:01:57,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:02:02,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-29 21:02:02,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 121 transitions, 1097 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:02,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:02:02,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-29 21:02:02,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:02:08,745 INFO L130 PetriNetUnfolder]: 253/681 cut-off events. [2023-08-29 21:02:08,745 INFO L131 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2023-08-29 21:02:08,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2963 conditions, 681 events. 253/681 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4074 event pairs, 71 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 2926. Up to 478 conditions per place. [2023-08-29 21:02:08,748 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 119 selfloop transitions, 42 changer transitions 0/163 dead transitions. [2023-08-29 21:02:08,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 163 transitions, 1691 flow [2023-08-29 21:02:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:02:08,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:02:08,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2141 transitions. [2023-08-29 21:02:08,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467206477732794 [2023-08-29 21:02:08,751 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2141 transitions. [2023-08-29 21:02:08,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2141 transitions. [2023-08-29 21:02:08,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:02:08,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2141 transitions. [2023-08-29 21:02:08,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.69230769230768) internal successors, (2141), 13 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:08,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:08,756 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:08,756 INFO L175 Difference]: Start difference. First operand has 122 places, 121 transitions, 1097 flow. Second operand 13 states and 2141 transitions. [2023-08-29 21:02:08,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 163 transitions, 1691 flow [2023-08-29 21:02:08,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 163 transitions, 1609 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-08-29 21:02:08,763 INFO L231 Difference]: Finished difference. Result has 129 places, 125 transitions, 1174 flow [2023-08-29 21:02:08,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1174, PETRI_PLACES=129, PETRI_TRANSITIONS=125} [2023-08-29 21:02:08,764 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 43 predicate places. [2023-08-29 21:02:08,764 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 125 transitions, 1174 flow [2023-08-29 21:02:08,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:08,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:02:08,764 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] [2023-08-29 21:02:08,777 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 [2023-08-29 21:02:08,968 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 [2023-08-29 21:02:08,969 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:02:08,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:02:08,969 INFO L85 PathProgramCache]: Analyzing trace with hash -389764353, now seen corresponding path program 2 times [2023-08-29 21:02:08,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:02:08,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351718875] [2023-08-29 21:02:08,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:02:08,970 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 [2023-08-29 21:02:08,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:02:08,970 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) [2023-08-29 21:02:08,971 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 [2023-08-29 21:02:09,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:02:09,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:02:09,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-29 21:02:09,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:02:09,395 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 [2023-08-29 21:02:09,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:09,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:09,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:09,527 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:02:09,527 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:02:09,528 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 [2023-08-29 21:02:09,573 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:02:09,573 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 [2023-08-29 21:02:09,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 73 [2023-08-29 21:02:09,694 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 39 treesize of output 35 [2023-08-29 21:02:09,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:02:09,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:02:09,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:02:09,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351718875] [2023-08-29 21:02:09,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351718875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:02:09,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:02:09,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 21:02:09,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453806527] [2023-08-29 21:02:09,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:02:09,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 21:02:09,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:02:09,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 21:02:09,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-29 21:02:11,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 475 [2023-08-29 21:02:11,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 125 transitions, 1174 flow. Second operand has 9 states, 9 states have (on average 167.22222222222223) internal successors, (1505), 9 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:11,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:02:11,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 475 [2023-08-29 21:02:11,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:02:15,744 INFO L130 PetriNetUnfolder]: 256/730 cut-off events. [2023-08-29 21:02:15,744 INFO L131 PetriNetUnfolder]: For 2278/2280 co-relation queries the response was YES. [2023-08-29 21:02:15,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 730 events. 256/730 cut-off events. For 2278/2280 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4633 event pairs, 38 based on Foata normal form. 3/725 useless extension candidates. Maximal degree in co-relation 3097. Up to 240 conditions per place. [2023-08-29 21:02:15,748 INFO L137 encePairwiseOnDemand]: 462/475 looper letters, 114 selfloop transitions, 60 changer transitions 0/179 dead transitions. [2023-08-29 21:02:15,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 179 transitions, 1908 flow [2023-08-29 21:02:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 21:02:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 21:02:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1384 transitions. [2023-08-29 21:02:15,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3642105263157895 [2023-08-29 21:02:15,749 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1384 transitions. [2023-08-29 21:02:15,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1384 transitions. [2023-08-29 21:02:15,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:02:15,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1384 transitions. [2023-08-29 21:02:15,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:15,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:15,753 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:15,753 INFO L175 Difference]: Start difference. First operand has 129 places, 125 transitions, 1174 flow. Second operand 8 states and 1384 transitions. [2023-08-29 21:02:15,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 179 transitions, 1908 flow [2023-08-29 21:02:15,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 179 transitions, 1816 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-29 21:02:15,761 INFO L231 Difference]: Finished difference. Result has 130 places, 141 transitions, 1493 flow [2023-08-29 21:02:15,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1493, PETRI_PLACES=130, PETRI_TRANSITIONS=141} [2023-08-29 21:02:15,761 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 44 predicate places. [2023-08-29 21:02:15,761 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 141 transitions, 1493 flow [2023-08-29 21:02:15,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 167.22222222222223) internal successors, (1505), 9 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:15,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:02:15,762 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] [2023-08-29 21:02:15,774 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 [2023-08-29 21:02:15,969 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 [2023-08-29 21:02:15,970 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)] === [2023-08-29 21:02:15,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:02:15,970 INFO L85 PathProgramCache]: Analyzing trace with hash -548233721, now seen corresponding path program 8 times [2023-08-29 21:02:15,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:02:15,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055107687] [2023-08-29 21:02:15,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:02:15,971 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 [2023-08-29 21:02:15,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:02:15,971 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) [2023-08-29 21:02:15,972 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 [2023-08-29 21:02:16,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:02:16,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:02:16,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-29 21:02:16,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:02:16,470 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:02:16,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:02:16,484 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 [2023-08-29 21:02:16,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:16,490 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 [2023-08-29 21:02:16,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:16,684 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 [2023-08-29 21:02:16,911 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 [2023-08-29 21:02:17,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:17,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:17,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:17,071 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:02:17,071 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:02:17,072 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 [2023-08-29 21:02:17,280 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:02:17,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:02:17,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:02:17,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:02:17,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-29 21:02:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:02:17,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:02:17,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:02:17,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055107687] [2023-08-29 21:02:17,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055107687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:02:17,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:02:17,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:02:17,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125790330] [2023-08-29 21:02:17,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:02:17,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:02:17,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:02:17,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:02:17,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:02:22,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-29 21:02:22,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 141 transitions, 1493 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:22,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:02:22,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-29 21:02:22,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:02:31,140 INFO L130 PetriNetUnfolder]: 274/767 cut-off events. [2023-08-29 21:02:31,140 INFO L131 PetriNetUnfolder]: For 3438/3438 co-relation queries the response was YES. [2023-08-29 21:02:31,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3544 conditions, 767 events. 274/767 cut-off events. For 3438/3438 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4858 event pairs, 93 based on Foata normal form. 0/761 useless extension candidates. Maximal degree in co-relation 3501. Up to 558 conditions per place. [2023-08-29 21:02:31,143 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 146 selfloop transitions, 39 changer transitions 0/187 dead transitions. [2023-08-29 21:02:31,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 187 transitions, 2200 flow [2023-08-29 21:02:31,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:02:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:02:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2179 transitions. [2023-08-29 21:02:31,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3528744939271255 [2023-08-29 21:02:31,146 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2179 transitions. [2023-08-29 21:02:31,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2179 transitions. [2023-08-29 21:02:31,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:02:31,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2179 transitions. [2023-08-29 21:02:31,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.6153846153846) internal successors, (2179), 13 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:31,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:31,151 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:31,151 INFO L175 Difference]: Start difference. First operand has 130 places, 141 transitions, 1493 flow. Second operand 13 states and 2179 transitions. [2023-08-29 21:02:31,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 187 transitions, 2200 flow [2023-08-29 21:02:31,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 187 transitions, 2155 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-29 21:02:31,162 INFO L231 Difference]: Finished difference. Result has 142 places, 152 transitions, 1701 flow [2023-08-29 21:02:31,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1701, PETRI_PLACES=142, PETRI_TRANSITIONS=152} [2023-08-29 21:02:31,163 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 56 predicate places. [2023-08-29 21:02:31,163 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 152 transitions, 1701 flow [2023-08-29 21:02:31,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:31,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:02:31,163 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] [2023-08-29 21:02:31,178 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 [2023-08-29 21:02:31,378 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 [2023-08-29 21:02:31,378 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:02:31,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:02:31,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1585015007, now seen corresponding path program 3 times [2023-08-29 21:02:31,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:02:31,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144622833] [2023-08-29 21:02:31,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 21:02:31,380 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 [2023-08-29 21:02:31,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:02:31,380 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) [2023-08-29 21:02:31,381 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 [2023-08-29 21:02:31,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 21:02:31,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:02:31,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-29 21:02:31,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:02:31,825 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 [2023-08-29 21:02:31,916 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:02:31,916 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 [2023-08-29 21:02:31,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:31,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:31,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:31,992 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:02:31,993 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:02:31,993 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 [2023-08-29 21:02:32,033 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 39 treesize of output 35 [2023-08-29 21:02:32,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 73 [2023-08-29 21:02:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:02:32,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:02:32,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:02:32,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144622833] [2023-08-29 21:02:32,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144622833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:02:32,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:02:32,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 21:02:32,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760035716] [2023-08-29 21:02:32,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:02:32,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 21:02:32,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:02:32,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 21:02:32,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-29 21:02:34,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 475 [2023-08-29 21:02:34,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 152 transitions, 1701 flow. Second operand has 9 states, 9 states have (on average 173.11111111111111) internal successors, (1558), 9 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:34,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:02:34,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 475 [2023-08-29 21:02:34,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:02:38,099 INFO L130 PetriNetUnfolder]: 226/707 cut-off events. [2023-08-29 21:02:38,099 INFO L131 PetriNetUnfolder]: For 3695/3707 co-relation queries the response was YES. [2023-08-29 21:02:38,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3412 conditions, 707 events. 226/707 cut-off events. For 3695/3707 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4698 event pairs, 82 based on Foata normal form. 14/712 useless extension candidates. Maximal degree in co-relation 3365. Up to 315 conditions per place. [2023-08-29 21:02:38,103 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 119 selfloop transitions, 60 changer transitions 0/192 dead transitions. [2023-08-29 21:02:38,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 192 transitions, 2390 flow [2023-08-29 21:02:38,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 21:02:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 21:02:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1427 transitions. [2023-08-29 21:02:38,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755263157894737 [2023-08-29 21:02:38,106 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1427 transitions. [2023-08-29 21:02:38,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1427 transitions. [2023-08-29 21:02:38,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:02:38,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1427 transitions. [2023-08-29 21:02:38,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 178.375) internal successors, (1427), 8 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:38,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:38,110 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:38,110 INFO L175 Difference]: Start difference. First operand has 142 places, 152 transitions, 1701 flow. Second operand 8 states and 1427 transitions. [2023-08-29 21:02:38,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 192 transitions, 2390 flow [2023-08-29 21:02:38,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 192 transitions, 2272 flow, removed 21 selfloop flow, removed 7 redundant places. [2023-08-29 21:02:38,123 INFO L231 Difference]: Finished difference. Result has 144 places, 157 transitions, 1816 flow [2023-08-29 21:02:38,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1816, PETRI_PLACES=144, PETRI_TRANSITIONS=157} [2023-08-29 21:02:38,124 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 58 predicate places. [2023-08-29 21:02:38,124 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 157 transitions, 1816 flow [2023-08-29 21:02:38,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 173.11111111111111) internal successors, (1558), 9 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:38,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:02:38,125 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] [2023-08-29 21:02:38,138 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 [2023-08-29 21:02:38,338 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 [2023-08-29 21:02:38,338 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)] === [2023-08-29 21:02:38,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:02:38,338 INFO L85 PathProgramCache]: Analyzing trace with hash -389644943, now seen corresponding path program 9 times [2023-08-29 21:02:38,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:02:38,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176021106] [2023-08-29 21:02:38,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 21:02:38,339 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 [2023-08-29 21:02:38,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:02:38,340 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) [2023-08-29 21:02:38,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-08-29 21:02:38,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 21:02:38,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:02:38,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-29 21:02:38,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:02:38,822 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:02:38,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:02:38,837 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 [2023-08-29 21:02:38,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:38,842 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 [2023-08-29 21:02:39,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:39,044 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 [2023-08-29 21:02:39,279 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 [2023-08-29 21:02:39,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:39,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:39,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:39,583 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:02:39,583 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:02:39,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:02:39,705 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:02:39,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:02:39,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:02:39,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2023-08-29 21:02:40,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:02:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:02:40,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:02:40,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:02:40,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176021106] [2023-08-29 21:02:40,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176021106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:02:40,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:02:40,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:02:40,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384224092] [2023-08-29 21:02:40,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:02:40,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:02:40,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:02:40,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:02:40,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:02:45,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-29 21:02:45,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 157 transitions, 1816 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:45,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:02:45,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-29 21:02:45,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:02:52,938 INFO L130 PetriNetUnfolder]: 293/828 cut-off events. [2023-08-29 21:02:52,938 INFO L131 PetriNetUnfolder]: For 4792/4792 co-relation queries the response was YES. [2023-08-29 21:02:52,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4082 conditions, 828 events. 293/828 cut-off events. For 4792/4792 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5439 event pairs, 126 based on Foata normal form. 0/821 useless extension candidates. Maximal degree in co-relation 4033. Up to 672 conditions per place. [2023-08-29 21:02:52,942 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 169 selfloop transitions, 34 changer transitions 0/205 dead transitions. [2023-08-29 21:02:52,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 205 transitions, 2651 flow [2023-08-29 21:02:52,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:02:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:02:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2175 transitions. [2023-08-29 21:02:52,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522267206477733 [2023-08-29 21:02:52,944 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2175 transitions. [2023-08-29 21:02:52,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2175 transitions. [2023-08-29 21:02:52,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:02:52,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2175 transitions. [2023-08-29 21:02:52,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.30769230769232) internal successors, (2175), 13 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:52,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:52,949 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:52,949 INFO L175 Difference]: Start difference. First operand has 144 places, 157 transitions, 1816 flow. Second operand 13 states and 2175 transitions. [2023-08-29 21:02:52,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 205 transitions, 2651 flow [2023-08-29 21:02:52,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 205 transitions, 2441 flow, removed 37 selfloop flow, removed 6 redundant places. [2023-08-29 21:02:52,964 INFO L231 Difference]: Finished difference. Result has 155 places, 173 transitions, 1967 flow [2023-08-29 21:02:52,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1967, PETRI_PLACES=155, PETRI_TRANSITIONS=173} [2023-08-29 21:02:52,965 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 69 predicate places. [2023-08-29 21:02:52,965 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 173 transitions, 1967 flow [2023-08-29 21:02:52,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:02:52,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:02:52,965 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] [2023-08-29 21:02:52,979 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 [2023-08-29 21:02:53,177 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 [2023-08-29 21:02:53,177 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)] === [2023-08-29 21:02:53,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:02:53,177 INFO L85 PathProgramCache]: Analyzing trace with hash -586448953, now seen corresponding path program 10 times [2023-08-29 21:02:53,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:02:53,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475221930] [2023-08-29 21:02:53,178 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 21:02:53,178 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 [2023-08-29 21:02:53,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:02:53,179 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) [2023-08-29 21:02:53,179 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 [2023-08-29 21:02:53,623 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 21:02:53,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:02:53,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-29 21:02:53,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:02:53,672 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 [2023-08-29 21:02:53,696 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:02:53,696 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 [2023-08-29 21:02:53,747 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:02:53,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:02:53,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:53,962 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 [2023-08-29 21:02:54,187 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 [2023-08-29 21:02:54,505 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:02:54,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:02:54,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:54,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:54,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:02:54,600 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:02:54,601 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:02:54,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 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 [2023-08-29 21:02:54,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2023-08-29 21:02:54,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:02:54,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:02:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:02:55,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:02:55,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:02:55,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475221930] [2023-08-29 21:02:55,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475221930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:02:55,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:02:55,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:02:55,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682752314] [2023-08-29 21:02:55,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:02:55,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:02:55,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:02:55,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:02:55,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:03:00,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-29 21:03:00,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 173 transitions, 1967 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:00,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:03:00,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-29 21:03:00,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:03:06,388 INFO L130 PetriNetUnfolder]: 301/858 cut-off events. [2023-08-29 21:03:06,388 INFO L131 PetriNetUnfolder]: For 4966/4966 co-relation queries the response was YES. [2023-08-29 21:03:06,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4271 conditions, 858 events. 301/858 cut-off events. For 4966/4966 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5738 event pairs, 140 based on Foata normal form. 0/851 useless extension candidates. Maximal degree in co-relation 4218. Up to 722 conditions per place. [2023-08-29 21:03:06,392 INFO L137 encePairwiseOnDemand]: 460/475 looper letters, 178 selfloop transitions, 28 changer transitions 0/208 dead transitions. [2023-08-29 21:03:06,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 208 transitions, 2651 flow [2023-08-29 21:03:06,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:03:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:03:06,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2168 transitions. [2023-08-29 21:03:06,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35109311740890686 [2023-08-29 21:03:06,395 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2168 transitions. [2023-08-29 21:03:06,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2168 transitions. [2023-08-29 21:03:06,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:03:06,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2168 transitions. [2023-08-29 21:03:06,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.76923076923077) internal successors, (2168), 13 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:06,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:06,400 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:06,400 INFO L175 Difference]: Start difference. First operand has 155 places, 173 transitions, 1967 flow. Second operand 13 states and 2168 transitions. [2023-08-29 21:03:06,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 208 transitions, 2651 flow [2023-08-29 21:03:06,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 208 transitions, 2563 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-08-29 21:03:06,418 INFO L231 Difference]: Finished difference. Result has 165 places, 182 transitions, 2083 flow [2023-08-29 21:03:06,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1880, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2083, PETRI_PLACES=165, PETRI_TRANSITIONS=182} [2023-08-29 21:03:06,418 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 79 predicate places. [2023-08-29 21:03:06,418 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 182 transitions, 2083 flow [2023-08-29 21:03:06,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:06,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:03:06,419 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] [2023-08-29 21:03:06,444 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 [2023-08-29 21:03:06,642 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 [2023-08-29 21:03:06,643 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)] === [2023-08-29 21:03:06,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:03:06,643 INFO L85 PathProgramCache]: Analyzing trace with hash -734065619, now seen corresponding path program 11 times [2023-08-29 21:03:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:03:06,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642703753] [2023-08-29 21:03:06,644 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 21:03:06,644 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 [2023-08-29 21:03:06,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:03:06,645 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) [2023-08-29 21:03:06,645 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 [2023-08-29 21:03:07,069 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:03:07,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:03:07,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-29 21:03:07,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:03:07,115 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 [2023-08-29 21:03:07,151 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:03:07,152 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 [2023-08-29 21:03:07,209 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:03:07,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:03:07,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:07,435 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 [2023-08-29 21:03:07,662 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 [2023-08-29 21:03:07,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:07,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:07,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:07,907 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:03:07,908 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:03:07,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:03:08,128 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:03:08,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:03:08,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:03:08,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2023-08-29 21:03:08,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:03:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:03:08,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:03:08,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:03:08,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642703753] [2023-08-29 21:03:08,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642703753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:03:08,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:03:08,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:03:08,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141807000] [2023-08-29 21:03:08,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:03:08,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:03:08,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:03:08,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:03:08,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:03:13,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-29 21:03:13,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 182 transitions, 2083 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:13,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:03:13,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-29 21:03:13,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:03:20,306 INFO L130 PetriNetUnfolder]: 315/907 cut-off events. [2023-08-29 21:03:20,306 INFO L131 PetriNetUnfolder]: For 5788/5788 co-relation queries the response was YES. [2023-08-29 21:03:20,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4581 conditions, 907 events. 315/907 cut-off events. For 5788/5788 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6200 event pairs, 136 based on Foata normal form. 0/900 useless extension candidates. Maximal degree in co-relation 4523. Up to 709 conditions per place. [2023-08-29 21:03:20,310 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 179 selfloop transitions, 42 changer transitions 0/223 dead transitions. [2023-08-29 21:03:20,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 223 transitions, 2875 flow [2023-08-29 21:03:20,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:03:20,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:03:20,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2137 transitions. [2023-08-29 21:03:20,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34607287449392715 [2023-08-29 21:03:20,313 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2137 transitions. [2023-08-29 21:03:20,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2137 transitions. [2023-08-29 21:03:20,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:03:20,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2137 transitions. [2023-08-29 21:03:20,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.3846153846154) internal successors, (2137), 13 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:20,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:20,318 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:20,318 INFO L175 Difference]: Start difference. First operand has 165 places, 182 transitions, 2083 flow. Second operand 13 states and 2137 transitions. [2023-08-29 21:03:20,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 223 transitions, 2875 flow [2023-08-29 21:03:20,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 223 transitions, 2792 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-08-29 21:03:20,339 INFO L231 Difference]: Finished difference. Result has 173 places, 195 transitions, 2312 flow [2023-08-29 21:03:20,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2312, PETRI_PLACES=173, PETRI_TRANSITIONS=195} [2023-08-29 21:03:20,339 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 87 predicate places. [2023-08-29 21:03:20,339 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 195 transitions, 2312 flow [2023-08-29 21:03:20,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:20,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:03:20,339 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] [2023-08-29 21:03:20,354 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 (36)] Forceful destruction successful, exit code 0 [2023-08-29 21:03:20,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:03:20,540 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:03:20,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:03:20,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1454659907, now seen corresponding path program 12 times [2023-08-29 21:03:20,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:03:20,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747256987] [2023-08-29 21:03:20,541 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 21:03:20,541 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 [2023-08-29 21:03:20,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:03:20,542 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2023-08-29 21:03:20,542 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 (37)] Waiting until timeout for monitored process [2023-08-29 21:03:20,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-29 21:03:20,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:03:20,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-29 21:03:20,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:03:21,037 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:03:21,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:03:21,062 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 [2023-08-29 21:03:21,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:21,068 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 [2023-08-29 21:03:21,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:21,264 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 [2023-08-29 21:03:21,476 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 [2023-08-29 21:03:21,679 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:03:21,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:03:21,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:21,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:21,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:21,844 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:03:21,845 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:03:21,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 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 [2023-08-29 21:03:22,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2023-08-29 21:03:22,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:03:22,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:03:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:03:22,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:03:22,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:03:22,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747256987] [2023-08-29 21:03:22,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747256987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:03:22,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:03:22,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:03:22,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913077311] [2023-08-29 21:03:22,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:03:22,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:03:22,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:03:22,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:03:22,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:03:26,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-29 21:03:26,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 195 transitions, 2312 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:26,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:03:26,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-29 21:03:26,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:03:33,802 INFO L130 PetriNetUnfolder]: 333/962 cut-off events. [2023-08-29 21:03:33,803 INFO L131 PetriNetUnfolder]: For 6800/6800 co-relation queries the response was YES. [2023-08-29 21:03:33,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4978 conditions, 962 events. 333/962 cut-off events. For 6800/6800 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6731 event pairs, 162 based on Foata normal form. 0/955 useless extension candidates. Maximal degree in co-relation 4917. Up to 825 conditions per place. [2023-08-29 21:03:33,808 INFO L137 encePairwiseOnDemand]: 460/475 looper letters, 201 selfloop transitions, 33 changer transitions 0/236 dead transitions. [2023-08-29 21:03:33,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 236 transitions, 3147 flow [2023-08-29 21:03:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-29 21:03:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-29 21:03:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2493 transitions. [2023-08-29 21:03:33,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34989473684210526 [2023-08-29 21:03:33,811 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2493 transitions. [2023-08-29 21:03:33,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2493 transitions. [2023-08-29 21:03:33,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:03:33,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2493 transitions. [2023-08-29 21:03:33,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 166.2) internal successors, (2493), 15 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:33,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 475.0) internal successors, (7600), 16 states have internal predecessors, (7600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:33,817 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 475.0) internal successors, (7600), 16 states have internal predecessors, (7600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:33,817 INFO L175 Difference]: Start difference. First operand has 173 places, 195 transitions, 2312 flow. Second operand 15 states and 2493 transitions. [2023-08-29 21:03:33,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 236 transitions, 3147 flow [2023-08-29 21:03:33,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 236 transitions, 3032 flow, removed 37 selfloop flow, removed 7 redundant places. [2023-08-29 21:03:33,841 INFO L231 Difference]: Finished difference. Result has 187 places, 208 transitions, 2489 flow [2023-08-29 21:03:33,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2489, PETRI_PLACES=187, PETRI_TRANSITIONS=208} [2023-08-29 21:03:33,842 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 101 predicate places. [2023-08-29 21:03:33,842 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 208 transitions, 2489 flow [2023-08-29 21:03:33,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:33,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:03:33,843 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] [2023-08-29 21:03:33,857 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 (37)] Forceful destruction successful, exit code 0 [2023-08-29 21:03:34,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:03:34,046 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:03:34,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:03:34,046 INFO L85 PathProgramCache]: Analyzing trace with hash -354902209, now seen corresponding path program 13 times [2023-08-29 21:03:34,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:03:34,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626352093] [2023-08-29 21:03:34,047 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 21:03:34,047 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 [2023-08-29 21:03:34,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:03:34,048 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2023-08-29 21:03:34,048 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 (38)] Waiting until timeout for monitored process [2023-08-29 21:03:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:03:34,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-29 21:03:34,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:03:34,627 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 [2023-08-29 21:03:34,639 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:03:34,640 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 [2023-08-29 21:03:34,691 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:03:34,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:03:34,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:34,916 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 [2023-08-29 21:03:35,119 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 [2023-08-29 21:03:35,416 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:03:35,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:03:35,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:35,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:35,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:35,505 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:03:35,505 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:03:35,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 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 [2023-08-29 21:03:35,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2023-08-29 21:03:35,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:03:35,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:03:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:03:36,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:03:36,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:03:36,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626352093] [2023-08-29 21:03:36,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626352093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:03:36,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:03:36,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:03:36,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167903775] [2023-08-29 21:03:36,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:03:36,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:03:36,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:03:36,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:03:36,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:03:43,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-29 21:03:43,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 208 transitions, 2489 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:43,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:03:43,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-29 21:03:43,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:03:50,661 INFO L130 PetriNetUnfolder]: 351/1016 cut-off events. [2023-08-29 21:03:50,661 INFO L131 PetriNetUnfolder]: For 7765/7765 co-relation queries the response was YES. [2023-08-29 21:03:50,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5337 conditions, 1016 events. 351/1016 cut-off events. For 7765/7765 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7290 event pairs, 170 based on Foata normal form. 0/1009 useless extension candidates. Maximal degree in co-relation 5268. Up to 878 conditions per place. [2023-08-29 21:03:50,667 INFO L137 encePairwiseOnDemand]: 460/475 looper letters, 211 selfloop transitions, 32 changer transitions 0/245 dead transitions. [2023-08-29 21:03:50,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 245 transitions, 3314 flow [2023-08-29 21:03:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-29 21:03:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-29 21:03:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2332 transitions. [2023-08-29 21:03:50,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506766917293233 [2023-08-29 21:03:50,670 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2332 transitions. [2023-08-29 21:03:50,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2332 transitions. [2023-08-29 21:03:50,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:03:50,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2332 transitions. [2023-08-29 21:03:50,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 166.57142857142858) internal successors, (2332), 14 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:50,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:50,675 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:50,675 INFO L175 Difference]: Start difference. First operand has 187 places, 208 transitions, 2489 flow. Second operand 14 states and 2332 transitions. [2023-08-29 21:03:50,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 245 transitions, 3314 flow [2023-08-29 21:03:50,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 245 transitions, 3204 flow, removed 37 selfloop flow, removed 6 redundant places. [2023-08-29 21:03:50,706 INFO L231 Difference]: Finished difference. Result has 199 places, 216 transitions, 2613 flow [2023-08-29 21:03:50,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2613, PETRI_PLACES=199, PETRI_TRANSITIONS=216} [2023-08-29 21:03:50,707 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 113 predicate places. [2023-08-29 21:03:50,707 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 216 transitions, 2613 flow [2023-08-29 21:03:50,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:50,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:03:50,707 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] [2023-08-29 21:03:50,723 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 (38)] Forceful destruction successful, exit code 0 [2023-08-29 21:03:50,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:03:50,909 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:03:50,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:03:50,909 INFO L85 PathProgramCache]: Analyzing trace with hash -29564971, now seen corresponding path program 14 times [2023-08-29 21:03:50,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:03:50,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745355112] [2023-08-29 21:03:50,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:03:50,910 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 [2023-08-29 21:03:50,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:03:50,911 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2023-08-29 21:03:50,912 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 (39)] Waiting until timeout for monitored process [2023-08-29 21:03:51,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:03:51,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:03:51,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-29 21:03:51,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:03:51,421 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 [2023-08-29 21:03:51,433 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:03:51,433 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 [2023-08-29 21:03:51,479 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:03:51,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:03:51,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:51,700 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 [2023-08-29 21:03:51,912 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 [2023-08-29 21:03:52,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:52,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:52,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:03:52,198 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:03:52,198 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:03:52,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:03:52,277 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:03:52,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:03:52,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2023-08-29 21:03:52,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:03:52,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:03:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:03:52,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:03:52,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:03:52,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745355112] [2023-08-29 21:03:52,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745355112] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:03:52,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:03:52,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:03:52,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446900387] [2023-08-29 21:03:52,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:03:52,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:03:52,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:03:52,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:03:52,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:03:58,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-29 21:03:58,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 216 transitions, 2613 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:03:58,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:03:58,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-29 21:03:58,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:05,782 INFO L130 PetriNetUnfolder]: 361/1053 cut-off events. [2023-08-29 21:04:05,782 INFO L131 PetriNetUnfolder]: For 8746/8746 co-relation queries the response was YES. [2023-08-29 21:04:05,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5575 conditions, 1053 events. 361/1053 cut-off events. For 8746/8746 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7650 event pairs, 184 based on Foata normal form. 0/1046 useless extension candidates. Maximal degree in co-relation 5501. Up to 888 conditions per place. [2023-08-29 21:04:05,788 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 219 selfloop transitions, 39 changer transitions 0/260 dead transitions. [2023-08-29 21:04:05,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 260 transitions, 3556 flow [2023-08-29 21:04:05,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-29 21:04:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-29 21:04:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2339 transitions. [2023-08-29 21:04:05,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35172932330827067 [2023-08-29 21:04:05,790 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2339 transitions. [2023-08-29 21:04:05,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2339 transitions. [2023-08-29 21:04:05,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:05,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2339 transitions. [2023-08-29 21:04:05,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 167.07142857142858) internal successors, (2339), 14 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:05,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:05,796 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:05,796 INFO L175 Difference]: Start difference. First operand has 199 places, 216 transitions, 2613 flow. Second operand 14 states and 2339 transitions. [2023-08-29 21:04:05,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 260 transitions, 3556 flow [2023-08-29 21:04:05,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 260 transitions, 3433 flow, removed 37 selfloop flow, removed 8 redundant places. [2023-08-29 21:04:05,828 INFO L231 Difference]: Finished difference. Result has 209 places, 229 transitions, 2840 flow [2023-08-29 21:04:05,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2840, PETRI_PLACES=209, PETRI_TRANSITIONS=229} [2023-08-29 21:04:05,828 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 123 predicate places. [2023-08-29 21:04:05,828 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 229 transitions, 2840 flow [2023-08-29 21:04:05,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:05,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:05,829 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] [2023-08-29 21:04:05,845 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 (39)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:06,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:06,029 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:06,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:06,029 INFO L85 PathProgramCache]: Analyzing trace with hash -848882735, now seen corresponding path program 15 times [2023-08-29 21:04:06,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:06,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146402485] [2023-08-29 21:04:06,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 21:04:06,030 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 [2023-08-29 21:04:06,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:06,031 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2023-08-29 21:04:06,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-08-29 21:04:06,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 21:04:06,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:04:06,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-29 21:04:06,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:06,574 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:04:06,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:04:06,593 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 [2023-08-29 21:04:06,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:06,597 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 [2023-08-29 21:04:06,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:06,789 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 [2023-08-29 21:04:07,182 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:04:07,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:04:07,283 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 [2023-08-29 21:04:07,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:07,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:07,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:07,475 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:04:07,476 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:04:07,476 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 [2023-08-29 21:04:07,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2023-08-29 21:04:07,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:04:07,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:04:07,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:07,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:07,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:07,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146402485] [2023-08-29 21:04:07,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146402485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:07,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:07,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:04:07,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922952733] [2023-08-29 21:04:07,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:07,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:04:07,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:07,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:04:07,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:04:13,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-29 21:04:13,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 229 transitions, 2840 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:13,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:13,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-29 21:04:13,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:21,185 INFO L130 PetriNetUnfolder]: 379/1112 cut-off events. [2023-08-29 21:04:21,185 INFO L131 PetriNetUnfolder]: For 10236/10236 co-relation queries the response was YES. [2023-08-29 21:04:21,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6009 conditions, 1112 events. 379/1112 cut-off events. For 10236/10236 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8227 event pairs, 217 based on Foata normal form. 0/1105 useless extension candidates. Maximal degree in co-relation 5930. Up to 996 conditions per place. [2023-08-29 21:04:21,192 INFO L137 encePairwiseOnDemand]: 461/475 looper letters, 238 selfloop transitions, 22 changer transitions 0/262 dead transitions. [2023-08-29 21:04:21,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 262 transitions, 3709 flow [2023-08-29 21:04:21,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:04:21,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:04:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2158 transitions. [2023-08-29 21:04:21,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494736842105263 [2023-08-29 21:04:21,194 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2158 transitions. [2023-08-29 21:04:21,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2158 transitions. [2023-08-29 21:04:21,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:21,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2158 transitions. [2023-08-29 21:04:21,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:21,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:21,199 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:21,199 INFO L175 Difference]: Start difference. First operand has 209 places, 229 transitions, 2840 flow. Second operand 13 states and 2158 transitions. [2023-08-29 21:04:21,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 262 transitions, 3709 flow [2023-08-29 21:04:21,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 262 transitions, 3548 flow, removed 51 selfloop flow, removed 8 redundant places. [2023-08-29 21:04:21,237 INFO L231 Difference]: Finished difference. Result has 221 places, 240 transitions, 2944 flow [2023-08-29 21:04:21,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2944, PETRI_PLACES=221, PETRI_TRANSITIONS=240} [2023-08-29 21:04:21,237 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 135 predicate places. [2023-08-29 21:04:21,237 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 240 transitions, 2944 flow [2023-08-29 21:04:21,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:21,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:21,238 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] [2023-08-29 21:04:21,250 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 (40)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:21,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:21,438 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:21,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:21,439 INFO L85 PathProgramCache]: Analyzing trace with hash -863025157, now seen corresponding path program 16 times [2023-08-29 21:04:21,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:21,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906310049] [2023-08-29 21:04:21,439 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 21:04:21,439 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 [2023-08-29 21:04:21,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:21,440 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2023-08-29 21:04:21,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-08-29 21:04:21,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 21:04:21,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:04:21,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-29 21:04:21,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:22,016 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:04:22,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:04:22,029 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 [2023-08-29 21:04:22,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:22,034 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 [2023-08-29 21:04:22,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:22,231 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 [2023-08-29 21:04:22,600 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 [2023-08-29 21:04:22,770 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:04:22,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:04:22,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:22,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:22,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:22,865 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:04:22,865 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:04:22,866 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 [2023-08-29 21:04:23,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:04:23,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:04:23,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-29 21:04:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:23,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:23,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:23,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906310049] [2023-08-29 21:04:23,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906310049] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:23,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:23,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:04:23,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107670863] [2023-08-29 21:04:23,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:23,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:04:23,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:23,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:04:23,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:04:30,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-29 21:04:30,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 240 transitions, 2944 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:30,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:30,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-29 21:04:30,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:37,682 INFO L130 PetriNetUnfolder]: 380/1125 cut-off events. [2023-08-29 21:04:37,682 INFO L131 PetriNetUnfolder]: For 10490/10490 co-relation queries the response was YES. [2023-08-29 21:04:37,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6032 conditions, 1125 events. 380/1125 cut-off events. For 10490/10490 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8377 event pairs, 226 based on Foata normal form. 0/1118 useless extension candidates. Maximal degree in co-relation 5945. Up to 1039 conditions per place. [2023-08-29 21:04:37,689 INFO L137 encePairwiseOnDemand]: 460/475 looper letters, 238 selfloop transitions, 23 changer transitions 0/263 dead transitions. [2023-08-29 21:04:37,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 263 transitions, 3709 flow [2023-08-29 21:04:37,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:04:37,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:04:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2153 transitions. [2023-08-29 21:04:37,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34866396761133606 [2023-08-29 21:04:37,691 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2153 transitions. [2023-08-29 21:04:37,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2153 transitions. [2023-08-29 21:04:37,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:37,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2153 transitions. [2023-08-29 21:04:37,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.6153846153846) internal successors, (2153), 13 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:37,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:37,696 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:37,696 INFO L175 Difference]: Start difference. First operand has 221 places, 240 transitions, 2944 flow. Second operand 13 states and 2153 transitions. [2023-08-29 21:04:37,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 263 transitions, 3709 flow [2023-08-29 21:04:37,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 263 transitions, 3601 flow, removed 48 selfloop flow, removed 2 redundant places. [2023-08-29 21:04:37,756 INFO L231 Difference]: Finished difference. Result has 238 places, 251 transitions, 3114 flow [2023-08-29 21:04:37,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2836, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3114, PETRI_PLACES=238, PETRI_TRANSITIONS=251} [2023-08-29 21:04:37,757 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 152 predicate places. [2023-08-29 21:04:37,757 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 251 transitions, 3114 flow [2023-08-29 21:04:37,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:37,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:37,757 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] [2023-08-29 21:04:37,769 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 (41)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:37,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:37,958 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:37,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:37,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1830679711, now seen corresponding path program 17 times [2023-08-29 21:04:37,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:37,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945971018] [2023-08-29 21:04:37,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 21:04:37,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:37,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:37,959 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2023-08-29 21:04:37,961 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 (42)] Waiting until timeout for monitored process [2023-08-29 21:04:38,433 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:04:38,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:04:38,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-29 21:04:38,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:38,498 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:04:38,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:04:38,516 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 [2023-08-29 21:04:38,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:38,521 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 [2023-08-29 21:04:38,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:38,722 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 [2023-08-29 21:04:39,125 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 [2023-08-29 21:04:39,226 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:04:39,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:04:39,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:39,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:39,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:39,402 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:04:39,402 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:04:39,403 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 [2023-08-29 21:04:39,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:04:39,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:04:39,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-29 21:04:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:39,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:39,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:39,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945971018] [2023-08-29 21:04:39,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945971018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:39,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:39,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:04:39,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439866582] [2023-08-29 21:04:39,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:39,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:04:39,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:39,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:04:39,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:04:45,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-29 21:04:45,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 251 transitions, 3114 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:45,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:45,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-29 21:04:45,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:04:51,599 INFO L130 PetriNetUnfolder]: 381/1139 cut-off events. [2023-08-29 21:04:51,599 INFO L131 PetriNetUnfolder]: For 10064/10064 co-relation queries the response was YES. [2023-08-29 21:04:51,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6047 conditions, 1139 events. 381/1139 cut-off events. For 10064/10064 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8572 event pairs, 227 based on Foata normal form. 0/1132 useless extension candidates. Maximal degree in co-relation 5953. Up to 1047 conditions per place. [2023-08-29 21:04:51,607 INFO L137 encePairwiseOnDemand]: 460/475 looper letters, 241 selfloop transitions, 26 changer transitions 0/269 dead transitions. [2023-08-29 21:04:51,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 269 transitions, 3828 flow [2023-08-29 21:04:51,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-29 21:04:51,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-29 21:04:51,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2315 transitions. [2023-08-29 21:04:51,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3481203007518797 [2023-08-29 21:04:51,609 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2315 transitions. [2023-08-29 21:04:51,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2315 transitions. [2023-08-29 21:04:51,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:04:51,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2315 transitions. [2023-08-29 21:04:51,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 165.35714285714286) internal successors, (2315), 14 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) [2023-08-29 21:04:51,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:51,614 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:51,614 INFO L175 Difference]: Start difference. First operand has 238 places, 251 transitions, 3114 flow. Second operand 14 states and 2315 transitions. [2023-08-29 21:04:51,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 269 transitions, 3828 flow [2023-08-29 21:04:51,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 269 transitions, 3652 flow, removed 85 selfloop flow, removed 2 redundant places. [2023-08-29 21:04:51,658 INFO L231 Difference]: Finished difference. Result has 255 places, 259 transitions, 3163 flow [2023-08-29 21:04:51,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2984, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3163, PETRI_PLACES=255, PETRI_TRANSITIONS=259} [2023-08-29 21:04:51,658 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 169 predicate places. [2023-08-29 21:04:51,659 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 259 transitions, 3163 flow [2023-08-29 21:04:51,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:51,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:04:51,659 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] [2023-08-29 21:04:51,672 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 (42)] Forceful destruction successful, exit code 0 [2023-08-29 21:04:51,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:04:51,860 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:04:51,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:04:51,860 INFO L85 PathProgramCache]: Analyzing trace with hash 496824357, now seen corresponding path program 18 times [2023-08-29 21:04:51,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:04:51,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351169812] [2023-08-29 21:04:51,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 21:04:51,861 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 [2023-08-29 21:04:51,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:04:51,862 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2023-08-29 21:04:51,862 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 (43)] Waiting until timeout for monitored process [2023-08-29 21:04:52,346 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-29 21:04:52,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:04:52,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-29 21:04:52,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:04:52,412 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:04:52,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:04:52,429 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 [2023-08-29 21:04:52,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:52,433 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 [2023-08-29 21:04:52,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:52,628 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 [2023-08-29 21:04:53,004 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 [2023-08-29 21:04:53,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:53,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:53,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:04:53,178 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:04:53,179 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:04:53,179 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 [2023-08-29 21:04:53,269 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:04:53,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:04:53,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2023-08-29 21:04:53,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:04:53,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:04:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:04:53,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:04:53,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:04:53,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351169812] [2023-08-29 21:04:53,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351169812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:04:53,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:04:53,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:04:53,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429983067] [2023-08-29 21:04:53,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:04:53,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:04:53,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:04:53,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:04:53,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:04:59,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-29 21:04:59,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 259 transitions, 3163 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:04:59,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:04:59,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-29 21:04:59,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:05:08,825 INFO L130 PetriNetUnfolder]: 400/1195 cut-off events. [2023-08-29 21:05:08,826 INFO L131 PetriNetUnfolder]: For 10987/10987 co-relation queries the response was YES. [2023-08-29 21:05:08,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6400 conditions, 1195 events. 400/1195 cut-off events. For 10987/10987 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9128 event pairs, 216 based on Foata normal form. 0/1188 useless extension candidates. Maximal degree in co-relation 6299. Up to 1041 conditions per place. [2023-08-29 21:05:08,834 INFO L137 encePairwiseOnDemand]: 460/475 looper letters, 269 selfloop transitions, 30 changer transitions 0/301 dead transitions. [2023-08-29 21:05:08,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 301 transitions, 4245 flow [2023-08-29 21:05:08,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:05:08,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:05:08,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2169 transitions. [2023-08-29 21:05:08,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125506072874496 [2023-08-29 21:05:08,836 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2169 transitions. [2023-08-29 21:05:08,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2169 transitions. [2023-08-29 21:05:08,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:05:08,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2169 transitions. [2023-08-29 21:05:08,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.84615384615384) internal successors, (2169), 13 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:08,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:08,841 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:08,841 INFO L175 Difference]: Start difference. First operand has 255 places, 259 transitions, 3163 flow. Second operand 13 states and 2169 transitions. [2023-08-29 21:05:08,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 301 transitions, 4245 flow [2023-08-29 21:05:08,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 301 transitions, 4172 flow, removed 22 selfloop flow, removed 5 redundant places. [2023-08-29 21:05:08,891 INFO L231 Difference]: Finished difference. Result has 269 places, 271 transitions, 3446 flow [2023-08-29 21:05:08,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=3090, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3446, PETRI_PLACES=269, PETRI_TRANSITIONS=271} [2023-08-29 21:05:08,891 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 183 predicate places. [2023-08-29 21:05:08,892 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 271 transitions, 3446 flow [2023-08-29 21:05:08,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:08,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:05:08,892 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] [2023-08-29 21:05:08,906 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 (43)] Forceful destruction successful, exit code 0 [2023-08-29 21:05:09,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:09,092 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:05:09,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:05:09,093 INFO L85 PathProgramCache]: Analyzing trace with hash -424554893, now seen corresponding path program 19 times [2023-08-29 21:05:09,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:05:09,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229710517] [2023-08-29 21:05:09,094 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 21:05:09,094 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 [2023-08-29 21:05:09,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:05:09,094 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2023-08-29 21:05:09,098 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 (44)] Waiting until timeout for monitored process [2023-08-29 21:05:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:05:09,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-29 21:05:09,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:05:09,714 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:05:09,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:05:09,731 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 [2023-08-29 21:05:09,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:09,735 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 [2023-08-29 21:05:09,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:09,931 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 [2023-08-29 21:05:10,307 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 [2023-08-29 21:05:10,404 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:05:10,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:05:10,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:10,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:10,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:10,566 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:10,567 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:10,567 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 [2023-08-29 21:05:10,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:05:10,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:05:11,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-29 21:05:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:05:11,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:05:11,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:05:11,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229710517] [2023-08-29 21:05:11,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229710517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:05:11,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:05:11,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:05:11,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331689135] [2023-08-29 21:05:11,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:05:11,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:05:11,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:05:11,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:05:11,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:05:17,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-29 21:05:17,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 271 transitions, 3446 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:17,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:05:17,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-29 21:05:17,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:05:25,309 INFO L130 PetriNetUnfolder]: 418/1252 cut-off events. [2023-08-29 21:05:25,309 INFO L131 PetriNetUnfolder]: For 14003/14003 co-relation queries the response was YES. [2023-08-29 21:05:25,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7003 conditions, 1252 events. 418/1252 cut-off events. For 14003/14003 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9739 event pairs, 225 based on Foata normal form. 0/1245 useless extension candidates. Maximal degree in co-relation 6895. Up to 1070 conditions per place. [2023-08-29 21:05:25,318 INFO L137 encePairwiseOnDemand]: 461/475 looper letters, 267 selfloop transitions, 32 changer transitions 0/301 dead transitions. [2023-08-29 21:05:25,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 301 transitions, 4395 flow [2023-08-29 21:05:25,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-29 21:05:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-29 21:05:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2324 transitions. [2023-08-29 21:05:25,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494736842105263 [2023-08-29 21:05:25,321 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2324 transitions. [2023-08-29 21:05:25,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2324 transitions. [2023-08-29 21:05:25,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:05:25,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2324 transitions. [2023-08-29 21:05:25,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:25,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:25,326 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:25,326 INFO L175 Difference]: Start difference. First operand has 269 places, 271 transitions, 3446 flow. Second operand 14 states and 2324 transitions. [2023-08-29 21:05:25,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 301 transitions, 4395 flow [2023-08-29 21:05:25,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 301 transitions, 4191 flow, removed 84 selfloop flow, removed 5 redundant places. [2023-08-29 21:05:25,396 INFO L231 Difference]: Finished difference. Result has 283 places, 280 transitions, 3574 flow [2023-08-29 21:05:25,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=3259, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3574, PETRI_PLACES=283, PETRI_TRANSITIONS=280} [2023-08-29 21:05:25,397 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 197 predicate places. [2023-08-29 21:05:25,397 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 280 transitions, 3574 flow [2023-08-29 21:05:25,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:25,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:05:25,397 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] [2023-08-29 21:05:25,410 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 (44)] Forceful destruction successful, exit code 0 [2023-08-29 21:05:25,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:25,601 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:05:25,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:05:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash 746081471, now seen corresponding path program 20 times [2023-08-29 21:05:25,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:05:25,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772012002] [2023-08-29 21:05:25,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:05:25,602 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 [2023-08-29 21:05:25,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:05:25,603 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2023-08-29 21:05:25,605 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 (45)] Waiting until timeout for monitored process [2023-08-29 21:05:26,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:05:26,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:05:26,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-29 21:05:26,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:05:26,189 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:05:26,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:05:26,205 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 [2023-08-29 21:05:26,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:26,209 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 [2023-08-29 21:05:26,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:26,400 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 [2023-08-29 21:05:26,775 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 [2023-08-29 21:05:26,952 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:05:26,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:05:27,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:27,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:27,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:27,046 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:27,047 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:27,047 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 [2023-08-29 21:05:27,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2023-08-29 21:05:27,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:05:27,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:05:27,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:05:27,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:05:27,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:05:27,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772012002] [2023-08-29 21:05:27,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772012002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:05:27,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:05:27,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:05:27,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451658866] [2023-08-29 21:05:27,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:05:27,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:05:27,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:05:27,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:05:27,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:05:32,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-29 21:05:32,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 280 transitions, 3574 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:32,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:05:32,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-29 21:05:32,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:05:40,979 INFO L130 PetriNetUnfolder]: 436/1305 cut-off events. [2023-08-29 21:05:40,979 INFO L131 PetriNetUnfolder]: For 15344/15344 co-relation queries the response was YES. [2023-08-29 21:05:40,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7303 conditions, 1305 events. 436/1305 cut-off events. For 15344/15344 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10259 event pairs, 264 based on Foata normal form. 0/1298 useless extension candidates. Maximal degree in co-relation 7189. Up to 1175 conditions per place. [2023-08-29 21:05:40,988 INFO L137 encePairwiseOnDemand]: 461/475 looper letters, 279 selfloop transitions, 27 changer transitions 0/308 dead transitions. [2023-08-29 21:05:40,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 308 transitions, 4490 flow [2023-08-29 21:05:40,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:05:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:05:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2162 transitions. [2023-08-29 21:05:40,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35012145748987855 [2023-08-29 21:05:40,990 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2162 transitions. [2023-08-29 21:05:40,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2162 transitions. [2023-08-29 21:05:40,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:05:40,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2162 transitions. [2023-08-29 21:05:40,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.30769230769232) internal successors, (2162), 13 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:40,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:40,995 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:40,995 INFO L175 Difference]: Start difference. First operand has 283 places, 280 transitions, 3574 flow. Second operand 13 states and 2162 transitions. [2023-08-29 21:05:40,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 308 transitions, 4490 flow [2023-08-29 21:05:41,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 308 transitions, 4300 flow, removed 78 selfloop flow, removed 6 redundant places. [2023-08-29 21:05:41,070 INFO L231 Difference]: Finished difference. Result has 294 places, 286 transitions, 3644 flow [2023-08-29 21:05:41,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=3408, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3644, PETRI_PLACES=294, PETRI_TRANSITIONS=286} [2023-08-29 21:05:41,070 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 208 predicate places. [2023-08-29 21:05:41,071 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 286 transitions, 3644 flow [2023-08-29 21:05:41,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:41,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:05:41,071 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] [2023-08-29 21:05:41,085 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 (45)] Forceful destruction successful, exit code 0 [2023-08-29 21:05:41,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:41,272 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:05:41,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:05:41,272 INFO L85 PathProgramCache]: Analyzing trace with hash 982826753, now seen corresponding path program 21 times [2023-08-29 21:05:41,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:05:41,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918609573] [2023-08-29 21:05:41,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 21:05:41,273 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 [2023-08-29 21:05:41,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:05:41,275 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2023-08-29 21:05:41,275 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 (46)] Waiting until timeout for monitored process [2023-08-29 21:05:41,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 21:05:41,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:05:41,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-29 21:05:41,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:05:41,939 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:05:41,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:05:41,955 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 [2023-08-29 21:05:41,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:41,960 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 [2023-08-29 21:05:42,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:42,156 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 [2023-08-29 21:05:42,545 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 [2023-08-29 21:05:42,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:42,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:42,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:42,731 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:42,732 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:42,732 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 [2023-08-29 21:05:42,855 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:05:42,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:05:43,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:05:43,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:05:43,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-29 21:05:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:05:43,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:05:43,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:05:43,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918609573] [2023-08-29 21:05:43,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918609573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:05:43,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:05:43,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:05:43,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417778862] [2023-08-29 21:05:43,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:05:43,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:05:43,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:05:43,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:05:43,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:05:47,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-29 21:05:47,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 286 transitions, 3644 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:47,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:05:47,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-29 21:05:47,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:05:56,032 INFO L130 PetriNetUnfolder]: 437/1318 cut-off events. [2023-08-29 21:05:56,033 INFO L131 PetriNetUnfolder]: For 13720/13720 co-relation queries the response was YES. [2023-08-29 21:05:56,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7174 conditions, 1318 events. 437/1318 cut-off events. For 13720/13720 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10406 event pairs, 283 based on Foata normal form. 0/1311 useless extension candidates. Maximal degree in co-relation 7055. Up to 1203 conditions per place. [2023-08-29 21:05:56,042 INFO L137 encePairwiseOnDemand]: 460/475 looper letters, 273 selfloop transitions, 31 changer transitions 0/306 dead transitions. [2023-08-29 21:05:56,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 306 transitions, 4408 flow [2023-08-29 21:05:56,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:05:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:05:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2156 transitions. [2023-08-29 21:05:56,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3491497975708502 [2023-08-29 21:05:56,045 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2156 transitions. [2023-08-29 21:05:56,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2156 transitions. [2023-08-29 21:05:56,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:05:56,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2156 transitions. [2023-08-29 21:05:56,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.84615384615384) internal successors, (2156), 13 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:56,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:56,049 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:56,049 INFO L175 Difference]: Start difference. First operand has 294 places, 286 transitions, 3644 flow. Second operand 13 states and 2156 transitions. [2023-08-29 21:05:56,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 306 transitions, 4408 flow [2023-08-29 21:05:56,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 306 transitions, 4257 flow, removed 54 selfloop flow, removed 7 redundant places. [2023-08-29 21:05:56,121 INFO L231 Difference]: Finished difference. Result has 304 places, 294 transitions, 3701 flow [2023-08-29 21:05:56,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=3493, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3701, PETRI_PLACES=304, PETRI_TRANSITIONS=294} [2023-08-29 21:05:56,121 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 218 predicate places. [2023-08-29 21:05:56,121 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 294 transitions, 3701 flow [2023-08-29 21:05:56,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:05:56,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:05:56,122 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] [2023-08-29 21:05:56,138 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 (46)] Forceful destruction successful, exit code 0 [2023-08-29 21:05:56,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:05:56,335 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:05:56,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:05:56,335 INFO L85 PathProgramCache]: Analyzing trace with hash 588584279, now seen corresponding path program 22 times [2023-08-29 21:05:56,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:05:56,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535675200] [2023-08-29 21:05:56,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 21:05:56,336 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 [2023-08-29 21:05:56,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:05:56,336 INFO L229 MonitoredProcess]: Starting monitored process 47 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) [2023-08-29 21:05:56,338 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 (47)] Waiting until timeout for monitored process [2023-08-29 21:05:56,902 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 21:05:56,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:05:56,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-29 21:05:56,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:05:56,965 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 [2023-08-29 21:05:56,979 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:05:56,980 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 [2023-08-29 21:05:57,028 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:05:57,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:05:57,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:57,252 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 [2023-08-29 21:05:57,632 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 [2023-08-29 21:05:57,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:57,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:57,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:05:57,806 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:57,806 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:05:57,807 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 [2023-08-29 21:05:58,009 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:05:58,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:05:58,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:05:58,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:05:58,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-29 21:05:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:05:58,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:05:58,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:05:58,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535675200] [2023-08-29 21:05:58,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535675200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:05:58,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:05:58,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:05:58,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634118655] [2023-08-29 21:05:58,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:05:58,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:05:58,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:05:58,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:05:58,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:06:03,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-29 21:06:03,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 294 transitions, 3701 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:03,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:06:03,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-29 21:06:03,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:06:11,600 INFO L130 PetriNetUnfolder]: 469/1406 cut-off events. [2023-08-29 21:06:11,601 INFO L131 PetriNetUnfolder]: For 15430/15430 co-relation queries the response was YES. [2023-08-29 21:06:11,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7756 conditions, 1406 events. 469/1406 cut-off events. For 15430/15430 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11271 event pairs, 241 based on Foata normal form. 0/1399 useless extension candidates. Maximal degree in co-relation 7632. Up to 1174 conditions per place. [2023-08-29 21:06:11,612 INFO L137 encePairwiseOnDemand]: 460/475 looper letters, 299 selfloop transitions, 45 changer transitions 0/346 dead transitions. [2023-08-29 21:06:11,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 346 transitions, 4999 flow [2023-08-29 21:06:11,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:06:11,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:06:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2131 transitions. [2023-08-29 21:06:11,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3451012145748988 [2023-08-29 21:06:11,616 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2131 transitions. [2023-08-29 21:06:11,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2131 transitions. [2023-08-29 21:06:11,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:06:11,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2131 transitions. [2023-08-29 21:06:11,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 163.92307692307693) internal successors, (2131), 13 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:11,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:11,621 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:11,621 INFO L175 Difference]: Start difference. First operand has 304 places, 294 transitions, 3701 flow. Second operand 13 states and 2131 transitions. [2023-08-29 21:06:11,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 346 transitions, 4999 flow [2023-08-29 21:06:11,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 346 transitions, 4888 flow, removed 32 selfloop flow, removed 8 redundant places. [2023-08-29 21:06:11,728 INFO L231 Difference]: Finished difference. Result has 312 places, 316 transitions, 4157 flow [2023-08-29 21:06:11,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=3590, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4157, PETRI_PLACES=312, PETRI_TRANSITIONS=316} [2023-08-29 21:06:11,728 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 226 predicate places. [2023-08-29 21:06:11,728 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 316 transitions, 4157 flow [2023-08-29 21:06:11,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:11,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:06:11,729 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] [2023-08-29 21:06:11,743 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 (47)] Forceful destruction successful, exit code 0 [2023-08-29 21:06:11,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:06:11,937 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:06:11,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:06:11,938 INFO L85 PathProgramCache]: Analyzing trace with hash -278281359, now seen corresponding path program 23 times [2023-08-29 21:06:11,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:06:11,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211083136] [2023-08-29 21:06:11,938 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 21:06:11,938 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 [2023-08-29 21:06:11,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:06:11,939 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2023-08-29 21:06:11,940 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 (48)] Waiting until timeout for monitored process [2023-08-29 21:06:12,467 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 21:06:12,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:06:12,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-29 21:06:12,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:06:12,532 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:06:12,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:06:12,550 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 [2023-08-29 21:06:12,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:12,554 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 [2023-08-29 21:06:12,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:12,751 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 [2023-08-29 21:06:13,131 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 [2023-08-29 21:06:13,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:13,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:13,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:13,300 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:06:13,300 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:06:13,300 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 [2023-08-29 21:06:13,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 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 [2023-08-29 21:06:13,603 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 [2023-08-29 21:06:13,681 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:06:13,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:06:13,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-29 21:06:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:06:13,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:06:13,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:06:13,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211083136] [2023-08-29 21:06:13,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211083136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:06:13,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:06:13,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:06:13,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639659059] [2023-08-29 21:06:13,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:06:13,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:06:13,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:06:13,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:06:13,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-29 21:06:17,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-29 21:06:17,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 316 transitions, 4157 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:17,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:06:17,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-29 21:06:17,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:06:23,655 INFO L130 PetriNetUnfolder]: 469/1415 cut-off events. [2023-08-29 21:06:23,655 INFO L131 PetriNetUnfolder]: For 17317/17317 co-relation queries the response was YES. [2023-08-29 21:06:23,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8023 conditions, 1415 events. 469/1415 cut-off events. For 17317/17317 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11385 event pairs, 288 based on Foata normal form. 0/1408 useless extension candidates. Maximal degree in co-relation 7896. Up to 1257 conditions per place. [2023-08-29 21:06:23,666 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 303 selfloop transitions, 37 changer transitions 0/342 dead transitions. [2023-08-29 21:06:23,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 342 transitions, 5053 flow [2023-08-29 21:06:23,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 21:06:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 21:06:23,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2124 transitions. [2023-08-29 21:06:23,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3439676113360324 [2023-08-29 21:06:23,668 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2124 transitions. [2023-08-29 21:06:23,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2124 transitions. [2023-08-29 21:06:23,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:06:23,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2124 transitions. [2023-08-29 21:06:23,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 163.3846153846154) internal successors, (2124), 13 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:23,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:23,673 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:23,673 INFO L175 Difference]: Start difference. First operand has 312 places, 316 transitions, 4157 flow. Second operand 13 states and 2124 transitions. [2023-08-29 21:06:23,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 342 transitions, 5053 flow [2023-08-29 21:06:23,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 342 transitions, 4826 flow, removed 98 selfloop flow, removed 6 redundant places. [2023-08-29 21:06:23,763 INFO L231 Difference]: Finished difference. Result has 322 places, 323 transitions, 4158 flow [2023-08-29 21:06:23,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=3930, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4158, PETRI_PLACES=322, PETRI_TRANSITIONS=323} [2023-08-29 21:06:23,763 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 236 predicate places. [2023-08-29 21:06:23,763 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 323 transitions, 4158 flow [2023-08-29 21:06:23,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:23,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:06:23,764 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] [2023-08-29 21:06:23,776 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 (48)] Forceful destruction successful, exit code 0 [2023-08-29 21:06:23,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:06:23,964 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:06:23,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:06:23,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1794104745, now seen corresponding path program 4 times [2023-08-29 21:06:23,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:06:23,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770836779] [2023-08-29 21:06:23,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 21:06:23,965 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 [2023-08-29 21:06:23,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:06:23,966 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2023-08-29 21:06:23,967 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 (49)] Waiting until timeout for monitored process [2023-08-29 21:06:24,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 21:06:24,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:06:24,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-29 21:06:24,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:06:24,539 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 [2023-08-29 21:06:24,690 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 20 treesize of output 29 [2023-08-29 21:06:24,738 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:06:24,739 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 [2023-08-29 21:06:24,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 69 [2023-08-29 21:06:24,880 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 [2023-08-29 21:06:24,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:06:24,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:06:24,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:06:24,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770836779] [2023-08-29 21:06:24,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770836779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:06:24,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:06:24,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 21:06:24,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852120694] [2023-08-29 21:06:24,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:06:24,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 21:06:24,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:06:24,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 21:06:24,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-29 21:06:26,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 475 [2023-08-29 21:06:26,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 323 transitions, 4158 flow. Second operand has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:26,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:06:26,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 475 [2023-08-29 21:06:26,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:06:31,005 INFO L130 PetriNetUnfolder]: 395/1319 cut-off events. [2023-08-29 21:06:31,005 INFO L131 PetriNetUnfolder]: For 13604/13640 co-relation queries the response was YES. [2023-08-29 21:06:31,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7122 conditions, 1319 events. 395/1319 cut-off events. For 13604/13640 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11034 event pairs, 125 based on Foata normal form. 35/1343 useless extension candidates. Maximal degree in co-relation 6990. Up to 812 conditions per place. [2023-08-29 21:06:31,016 INFO L137 encePairwiseOnDemand]: 461/475 looper letters, 201 selfloop transitions, 127 changer transitions 0/354 dead transitions. [2023-08-29 21:06:31,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 354 transitions, 5147 flow [2023-08-29 21:06:31,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 21:06:31,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 21:06:31,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1716 transitions. [2023-08-29 21:06:31,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36126315789473684 [2023-08-29 21:06:31,017 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1716 transitions. [2023-08-29 21:06:31,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1716 transitions. [2023-08-29 21:06:31,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:06:31,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1716 transitions. [2023-08-29 21:06:31,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 171.6) internal successors, (1716), 10 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:31,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 475.0) internal successors, (5225), 11 states have internal predecessors, (5225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:31,021 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 475.0) internal successors, (5225), 11 states have internal predecessors, (5225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:31,021 INFO L175 Difference]: Start difference. First operand has 322 places, 323 transitions, 4158 flow. Second operand 10 states and 1716 transitions. [2023-08-29 21:06:31,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 354 transitions, 5147 flow [2023-08-29 21:06:31,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 354 transitions, 5014 flow, removed 43 selfloop flow, removed 8 redundant places. [2023-08-29 21:06:31,101 INFO L231 Difference]: Finished difference. Result has 325 places, 333 transitions, 4592 flow [2023-08-29 21:06:31,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=4019, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4592, PETRI_PLACES=325, PETRI_TRANSITIONS=333} [2023-08-29 21:06:31,101 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 239 predicate places. [2023-08-29 21:06:31,101 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 333 transitions, 4592 flow [2023-08-29 21:06:31,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 167.0) internal successors, (1670), 10 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:06:31,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:06:31,102 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] [2023-08-29 21:06:31,116 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 (49)] Forceful destruction successful, exit code 0 [2023-08-29 21:06:31,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:06:31,302 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 21:06:31,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:06:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1513823949, now seen corresponding path program 24 times [2023-08-29 21:06:31,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:06:31,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969651012] [2023-08-29 21:06:31,303 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 21:06:31,303 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 [2023-08-29 21:06:31,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:06:31,304 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2023-08-29 21:06:31,304 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 (50)] Waiting until timeout for monitored process [2023-08-29 21:06:31,826 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-29 21:06:31,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:06:31,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-29 21:06:31,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:06:31,895 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-29 21:06:31,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-29 21:06:31,908 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 [2023-08-29 21:06:31,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:31,913 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 [2023-08-29 21:06:32,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:32,118 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 [2023-08-29 21:06:32,512 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 [2023-08-29 21:06:32,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:32,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:32,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:06:32,686 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:06:32,687 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:06:32,687 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 [2023-08-29 21:06:32,875 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-29 21:06:32,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-29 21:06:32,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 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 [2023-08-29 21:06:33,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 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 [2023-08-29 21:06:33,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-29 21:06:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:06:33,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:06:33,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:06:33,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969651012] [2023-08-29 21:06:33,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969651012] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:06:33,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:06:33,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-29 21:06:33,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925358261] [2023-08-29 21:06:33,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:06:33,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 21:06:33,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:06:33,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 21:06:33,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 Killed by 15