./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:48:11,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:48:11,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:48:11,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:48:11,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:48:11,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:48:11,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:48:11,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:48:11,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:48:11,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:48:11,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:48:11,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:48:11,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:48:11,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:48:11,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:48:11,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:48:11,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:48:11,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:48:11,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:48:11,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:48:11,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:48:11,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:48:11,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:48:11,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:48:11,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:48:11,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:48:11,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:48:11,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:48:11,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:48:11,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:48:11,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:48:11,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:48:11,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:48:11,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:48:11,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:48:11,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:48:11,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:48:11,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:48:11,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:48:11,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:48:11,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:48:11,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:48:11,416 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:48:11,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:48:11,418 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:48:11,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:48:11,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:48:11,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:48:11,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:48:11,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:48:11,420 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:48:11,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:48:11,421 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:48:11,421 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:48:11,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:48:11,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:48:11,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:48:11,422 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:48:11,422 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:48:11,423 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:48:11,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:48:11,423 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:48:11,423 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:48:11,423 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:48:11,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:48:11,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:48:11,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:48:11,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:48:11,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:48:11,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:48:11,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:48:11,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:48:11,425 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:48:11,426 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:48:11,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:48:11,426 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:48:11,426 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:48:11,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:48:11,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:48:11,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:48:11,774 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:48:11,775 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:48:11,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-08-31 23:48:13,052 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:48:13,342 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:48:13,343 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-08-31 23:48:13,359 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27825addc/5c3e60db2b0645548e497616d4dc4197/FLAG411209fa8 [2023-08-31 23:48:13,379 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27825addc/5c3e60db2b0645548e497616d4dc4197 [2023-08-31 23:48:13,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:48:13,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:48:13,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:48:13,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:48:13,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:48:13,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:48:13" (1/1) ... [2023-08-31 23:48:13,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7382e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:13, skipping insertion in model container [2023-08-31 23:48:13,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:48:13" (1/1) ... [2023-08-31 23:48:13,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:48:13,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:48:14,115 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-08-31 23:48:14,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:48:14,181 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-31 23:48:14,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@66630c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:14, skipping insertion in model container [2023-08-31 23:48:14,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:48:14,184 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-31 23:48:14,186 INFO L158 Benchmark]: Toolchain (without parser) took 802.08ms. Allocated memory was 67.1MB in the beginning and 92.3MB in the end (delta: 25.2MB). Free memory was 37.7MB in the beginning and 64.9MB in the end (delta: -27.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-31 23:48:14,186 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:48:14,187 INFO L158 Benchmark]: CACSL2BoogieTranslator took 798.32ms. Allocated memory was 67.1MB in the beginning and 92.3MB in the end (delta: 25.2MB). Free memory was 37.5MB in the beginning and 65.3MB in the end (delta: -27.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-31 23:48:14,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 798.32ms. Allocated memory was 67.1MB in the beginning and 92.3MB in the end (delta: 25.2MB). Free memory was 37.5MB in the beginning and 65.3MB in the end (delta: -27.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1709]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:48:15,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:48:15,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:48:15,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:48:15,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:48:15,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:48:15,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:48:16,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:48:16,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:48:16,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:48:16,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:48:16,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:48:16,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:48:16,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:48:16,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:48:16,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:48:16,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:48:16,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:48:16,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:48:16,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:48:16,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:48:16,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:48:16,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:48:16,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:48:16,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:48:16,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:48:16,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:48:16,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:48:16,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:48:16,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:48:16,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:48:16,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:48:16,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:48:16,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:48:16,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:48:16,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:48:16,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:48:16,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:48:16,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:48:16,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:48:16,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:48:16,055 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-31 23:48:16,104 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:48:16,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:48:16,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:48:16,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:48:16,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:48:16,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:48:16,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:48:16,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:48:16,108 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:48:16,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:48:16,109 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:48:16,109 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:48:16,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:48:16,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:48:16,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:48:16,110 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:48:16,110 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:48:16,110 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:48:16,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:48:16,110 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:48:16,111 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-31 23:48:16,111 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-31 23:48:16,111 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:48:16,111 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:48:16,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:48:16,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:48:16,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:48:16,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:48:16,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:48:16,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:48:16,113 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-31 23:48:16,113 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-31 23:48:16,113 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:48:16,113 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:48:16,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:48:16,114 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-31 23:48:16,114 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:48:16,114 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:48:16,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:48:16,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:48:16,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:48:16,449 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:48:16,450 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:48:16,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-08-31 23:48:17,711 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:48:18,059 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:48:18,060 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-08-31 23:48:18,083 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/861f74283/758e4bbd809646fba3da04129b3640d8/FLAG022da1685 [2023-08-31 23:48:18,100 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/861f74283/758e4bbd809646fba3da04129b3640d8 [2023-08-31 23:48:18,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:48:18,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:48:18,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:48:18,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:48:18,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:48:18,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:48:18" (1/1) ... [2023-08-31 23:48:18,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b57c94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:18, skipping insertion in model container [2023-08-31 23:48:18,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:48:18" (1/1) ... [2023-08-31 23:48:18,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:48:18,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:48:18,749 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-08-31 23:48:18,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:48:18,819 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-31 23:48:18,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:48:18,871 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-08-31 23:48:18,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:48:18,894 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:48:18,939 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-08-31 23:48:18,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:48:19,107 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:48:19,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:19 WrapperNode [2023-08-31 23:48:19,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:48:19,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:48:19,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:48:19,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:48:19,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:19" (1/1) ... [2023-08-31 23:48:19,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:19" (1/1) ... [2023-08-31 23:48:19,199 INFO L138 Inliner]: procedures = 486, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2023-08-31 23:48:19,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:48:19,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:48:19,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:48:19,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:48:19,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:19" (1/1) ... [2023-08-31 23:48:19,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:19" (1/1) ... [2023-08-31 23:48:19,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:19" (1/1) ... [2023-08-31 23:48:19,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:19" (1/1) ... [2023-08-31 23:48:19,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:19" (1/1) ... [2023-08-31 23:48:19,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:19" (1/1) ... [2023-08-31 23:48:19,248 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:19" (1/1) ... [2023-08-31 23:48:19,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:19" (1/1) ... [2023-08-31 23:48:19,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:48:19,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:48:19,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:48:19,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:48:19,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:19" (1/1) ... [2023-08-31 23:48:19,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:48:19,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:48:19,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 23:48:19,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 23:48:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:48:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-31 23:48:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-31 23:48:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 23:48:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:48:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 23:48:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:48:19,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:48:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-31 23:48:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-31 23:48:19,331 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-31 23:48:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:48:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-31 23:48:19,332 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:48:19,722 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:48:19,724 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:48:20,131 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:48:20,138 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:48:20,139 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:48:20,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:48:20 BoogieIcfgContainer [2023-08-31 23:48:20,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:48:20,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:48:20,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:48:20,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:48:20,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:48:18" (1/3) ... [2023-08-31 23:48:20,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a872e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:48:20, skipping insertion in model container [2023-08-31 23:48:20,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:48:19" (2/3) ... [2023-08-31 23:48:20,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a872e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:48:20, skipping insertion in model container [2023-08-31 23:48:20,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:48:20" (3/3) ... [2023-08-31 23:48:20,149 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2023-08-31 23:48:20,164 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:48:20,164 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-08-31 23:48:20,164 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:48:20,271 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 23:48:20,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 220 transitions, 456 flow [2023-08-31 23:48:20,434 INFO L130 PetriNetUnfolder]: 10/270 cut-off events. [2023-08-31 23:48:20,434 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:48:20,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 270 events. 10/270 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 676 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 155. Up to 4 conditions per place. [2023-08-31 23:48:20,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 220 transitions, 456 flow [2023-08-31 23:48:20,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 218 transitions, 448 flow [2023-08-31 23:48:20,457 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:48:20,475 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 216 places, 218 transitions, 448 flow [2023-08-31 23:48:20,478 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 216 places, 218 transitions, 448 flow [2023-08-31 23:48:20,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 218 transitions, 448 flow [2023-08-31 23:48:20,548 INFO L130 PetriNetUnfolder]: 10/270 cut-off events. [2023-08-31 23:48:20,549 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:48:20,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 270 events. 10/270 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 677 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 155. Up to 4 conditions per place. [2023-08-31 23:48:20,555 INFO L119 LiptonReduction]: Number of co-enabled transitions 5548 [2023-08-31 23:49:34,087 WARN L222 SmtUtils]: Spent 23.07s on a formula simplification. DAG size of input: 232 DAG size of output: 224 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:49:46,397 WARN L222 SmtUtils]: Spent 12.31s on a formula simplification that was a NOOP. DAG size: 220 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:50:07,473 WARN L222 SmtUtils]: Spent 21.07s on a formula simplification. DAG size of input: 235 DAG size of output: 227 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:50:17,612 WARN L222 SmtUtils]: Spent 10.14s on a formula simplification that was a NOOP. DAG size: 223 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:52:28,159 WARN L222 SmtUtils]: Spent 2.17m on a formula simplification. DAG size of input: 276 DAG size of output: 269 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:53:29,436 WARN L222 SmtUtils]: Spent 1.02m on a formula simplification that was a NOOP. DAG size: 256 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:55:41,430 WARN L222 SmtUtils]: Spent 2.20m on a formula simplification. DAG size of input: 285 DAG size of output: 276 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:56:56,940 WARN L222 SmtUtils]: Spent 1.26m on a formula simplification that was a NOOP. DAG size: 262 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:57:07,722 WARN L222 SmtUtils]: Spent 10.78s on a formula simplification that was a NOOP. DAG size: 227 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:57:18,621 WARN L222 SmtUtils]: Spent 10.90s 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) [2023-08-31 23:57:36,635 WARN L222 SmtUtils]: Spent 18.01s on a formula simplification. DAG size of input: 236 DAG size of output: 234 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:57:44,832 WARN L222 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 231 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:57:45,083 INFO L134 LiptonReduction]: Checked pairs total: 24110 [2023-08-31 23:57:45,083 INFO L136 LiptonReduction]: Total number of compositions: 243 [2023-08-31 23:57:45,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:57:45,098 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;@3e408a62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:57:45,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-08-31 23:57:45,100 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-31 23:57:45,101 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:57:45,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:57:45,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:57:45,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:57:45,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:57:45,106 INFO L85 PathProgramCache]: Analyzing trace with hash 755, now seen corresponding path program 1 times [2023-08-31 23:57:45,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:57:45,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852032982] [2023-08-31 23:57:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:57:45,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:57:45,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:57:45,125 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:57:45,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-31 23:57:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:57:45,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-31 23:57:45,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:57:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:57:45,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:57:45,250 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:57:45,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852032982] [2023-08-31 23:57:45,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852032982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:57:45,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:57:45,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:57:45,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099699070] [2023-08-31 23:57:45,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:57:45,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:57:45,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:57:45,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:57:45,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:57:45,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 463 [2023-08-31 23:57:45,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 204.5) internal successors, (409), 2 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:45,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:57:45,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 463 [2023-08-31 23:57:45,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:57:46,304 INFO L130 PetriNetUnfolder]: 778/2034 cut-off events. [2023-08-31 23:57:46,304 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-31 23:57:46,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3384 conditions, 2034 events. 778/2034 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17144 event pairs, 777 based on Foata normal form. 0/1186 useless extension candidates. Maximal degree in co-relation 3238. Up to 1326 conditions per place. [2023-08-31 23:57:46,323 INFO L137 encePairwiseOnDemand]: 445/463 looper letters, 44 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2023-08-31 23:57:46,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 232 flow [2023-08-31 23:57:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:57:46,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:57:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 470 transitions. [2023-08-31 23:57:46,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075593952483801 [2023-08-31 23:57:46,348 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 470 transitions. [2023-08-31 23:57:46,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 470 transitions. [2023-08-31 23:57:46,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:57:46,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 470 transitions. [2023-08-31 23:57:46,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 235.0) internal successors, (470), 2 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:46,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 463.0) internal successors, (1389), 3 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:46,365 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 463.0) internal successors, (1389), 3 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:46,367 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 180 flow. Second operand 2 states and 470 transitions. [2023-08-31 23:57:46,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 232 flow [2023-08-31 23:57:46,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:57:46,378 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 136 flow [2023-08-31 23:57:46,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=136, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2023-08-31 23:57:46,383 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2023-08-31 23:57:46,384 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 136 flow [2023-08-31 23:57:46,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 204.5) internal successors, (409), 2 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:46,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:57:46,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-31 23:57:46,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-08-31 23:57:46,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:57:46,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:57:46,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:57:46,595 INFO L85 PathProgramCache]: Analyzing trace with hash 24474, now seen corresponding path program 1 times [2023-08-31 23:57:46,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:57:46,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084648585] [2023-08-31 23:57:46,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:57:46,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:57:46,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:57:46,598 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:57:46,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-31 23:57:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:57:46,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 23:57:46,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:57:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:57:46,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:57:46,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:57:46,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084648585] [2023-08-31 23:57:46,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084648585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:57:46,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:57:46,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:57:46,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169179594] [2023-08-31 23:57:46,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:57:46,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:57:46,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:57:46,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:57:46,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:57:46,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 463 [2023-08-31 23:57:46,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:46,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:57:46,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 463 [2023-08-31 23:57:46,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:57:48,018 INFO L130 PetriNetUnfolder]: 777/1572 cut-off events. [2023-08-31 23:57:48,019 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 23:57:48,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 1572 events. 777/1572 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9972 event pairs, 777 based on Foata normal form. 0/1010 useless extension candidates. Maximal degree in co-relation 2913. Up to 1321 conditions per place. [2023-08-31 23:57:48,027 INFO L137 encePairwiseOnDemand]: 459/463 looper letters, 54 selfloop transitions, 1 changer transitions 1/78 dead transitions. [2023-08-31 23:57:48,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 272 flow [2023-08-31 23:57:48,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:57:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:57:48,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-31 23:57:48,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744420446364291 [2023-08-31 23:57:48,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-31 23:57:48,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-31 23:57:48,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:57:48,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-31 23:57:48,033 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) [2023-08-31 23:57:48,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:48,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:48,037 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 136 flow. Second operand 3 states and 659 transitions. [2023-08-31 23:57:48,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 272 flow [2023-08-31 23:57:48,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:57:48,039 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 145 flow [2023-08-31 23:57:48,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2023-08-31 23:57:48,040 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2023-08-31 23:57:48,040 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 145 flow [2023-08-31 23:57:48,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:48,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:57:48,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 23:57:48,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-31 23:57:48,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:57:48,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:57:48,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:57:48,254 INFO L85 PathProgramCache]: Analyzing trace with hash 752065, now seen corresponding path program 1 times [2023-08-31 23:57:48,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:57:48,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330059814] [2023-08-31 23:57:48,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:57:48,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:57:48,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:57:48,256 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:57:48,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-31 23:57:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:57:48,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 23:57:48,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:57:48,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:48,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-31 23:57:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:57:48,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:57:48,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:57:48,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330059814] [2023-08-31 23:57:48,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330059814] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:57:48,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:57:48,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:57:48,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592269974] [2023-08-31 23:57:48,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:57:48,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:57:48,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:57:48,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:57:48,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:57:48,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 463 [2023-08-31 23:57:48,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:48,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:57:48,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 463 [2023-08-31 23:57:48,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:57:50,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 23:57:50,606 INFO L130 PetriNetUnfolder]: 768/1888 cut-off events. [2023-08-31 23:57:50,606 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-31 23:57:50,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3299 conditions, 1888 events. 768/1888 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 14823 event pairs, 768 based on Foata normal form. 0/1154 useless extension candidates. Maximal degree in co-relation 3294. Up to 1313 conditions per place. [2023-08-31 23:57:50,615 INFO L137 encePairwiseOnDemand]: 459/463 looper letters, 40 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-31 23:57:50,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 64 transitions, 225 flow [2023-08-31 23:57:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:57:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:57:50,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-08-31 23:57:50,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658027357811375 [2023-08-31 23:57:50,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-08-31 23:57:50,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-08-31 23:57:50,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:57:50,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-08-31 23:57:50,622 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) [2023-08-31 23:57:50,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:50,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:50,625 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 145 flow. Second operand 3 states and 647 transitions. [2023-08-31 23:57:50,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 64 transitions, 225 flow [2023-08-31 23:57:50,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:57:50,628 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 144 flow [2023-08-31 23:57:50,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-08-31 23:57:50,629 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-31 23:57:50,629 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 144 flow [2023-08-31 23:57:50,630 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) [2023-08-31 23:57:50,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:57:50,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 23:57:50,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-31 23:57:50,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:57:50,843 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:57:50,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:57:50,843 INFO L85 PathProgramCache]: Analyzing trace with hash 752066, now seen corresponding path program 1 times [2023-08-31 23:57:50,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:57:50,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880449241] [2023-08-31 23:57:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:57:50,845 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 [2023-08-31 23:57:50,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:57:50,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:57:50,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-31 23:57:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:57:51,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 23:57:51,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:57:51,058 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 23:57:51,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-31 23:57:51,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:57:51,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:57:51,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:57:51,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880449241] [2023-08-31 23:57:51,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880449241] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:57:51,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:57:51,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:57:51,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363594405] [2023-08-31 23:57:51,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:57:51,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:57:51,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:57:51,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:57:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:57:51,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 463 [2023-08-31 23:57:51,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:51,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:57:51,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 463 [2023-08-31 23:57:51,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:57:52,376 INFO L130 PetriNetUnfolder]: 759/1870 cut-off events. [2023-08-31 23:57:52,376 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-31 23:57:52,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3263 conditions, 1870 events. 759/1870 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14707 event pairs, 669 based on Foata normal form. 0/1150 useless extension candidates. Maximal degree in co-relation 3258. Up to 1128 conditions per place. [2023-08-31 23:57:52,385 INFO L137 encePairwiseOnDemand]: 452/463 looper letters, 50 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2023-08-31 23:57:52,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 81 transitions, 296 flow [2023-08-31 23:57:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:57:52,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:57:52,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2023-08-31 23:57:52,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47588192944564434 [2023-08-31 23:57:52,388 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2023-08-31 23:57:52,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2023-08-31 23:57:52,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:57:52,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2023-08-31 23:57:52,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:52,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:52,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:52,397 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 144 flow. Second operand 3 states and 661 transitions. [2023-08-31 23:57:52,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 81 transitions, 296 flow [2023-08-31 23:57:52,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 81 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:57:52,399 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 169 flow [2023-08-31 23:57:52,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-08-31 23:57:52,400 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-31 23:57:52,400 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 169 flow [2023-08-31 23:57:52,401 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) [2023-08-31 23:57:52,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:57:52,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 23:57:52,411 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 [2023-08-31 23:57:52,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:57:52,605 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:57:52,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:57:52,605 INFO L85 PathProgramCache]: Analyzing trace with hash 755639, now seen corresponding path program 1 times [2023-08-31 23:57:52,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:57:52,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831399874] [2023-08-31 23:57:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:57:52,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:57:52,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:57:52,607 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:57:52,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-31 23:57:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:57:52,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 23:57:52,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:57:52,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-31 23:57:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:57:52,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:57:52,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:57:52,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831399874] [2023-08-31 23:57:52,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831399874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:57:52,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:57:52,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:57:52,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264719021] [2023-08-31 23:57:52,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:57:52,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:57:52,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:57:52,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:57:52,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:57:53,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 463 [2023-08-31 23:57:53,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:53,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:57:53,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 463 [2023-08-31 23:57:53,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:57:53,896 INFO L130 PetriNetUnfolder]: 759/1854 cut-off events. [2023-08-31 23:57:53,896 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-31 23:57:53,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3321 conditions, 1854 events. 759/1854 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 14353 event pairs, 669 based on Foata normal form. 0/1142 useless extension candidates. Maximal degree in co-relation 3315. Up to 1141 conditions per place. [2023-08-31 23:57:53,905 INFO L137 encePairwiseOnDemand]: 456/463 looper letters, 44 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2023-08-31 23:57:53,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 283 flow [2023-08-31 23:57:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:57:53,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:57:53,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2023-08-31 23:57:53,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4406047516198704 [2023-08-31 23:57:53,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2023-08-31 23:57:53,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2023-08-31 23:57:53,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:57:53,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2023-08-31 23:57:53,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:53,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:53,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:53,915 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 169 flow. Second operand 3 states and 612 transitions. [2023-08-31 23:57:53,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 283 flow [2023-08-31 23:57:53,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:57:53,917 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 168 flow [2023-08-31 23:57:53,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2023-08-31 23:57:53,918 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -17 predicate places. [2023-08-31 23:57:53,919 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 168 flow [2023-08-31 23:57:53,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:53,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:57:53,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 23:57:53,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-08-31 23:57:54,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:57:54,130 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:57:54,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:57:54,130 INFO L85 PathProgramCache]: Analyzing trace with hash 755700, now seen corresponding path program 1 times [2023-08-31 23:57:54,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:57:54,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834398843] [2023-08-31 23:57:54,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:57:54,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:57:54,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:57:54,133 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:57:54,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-31 23:57:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:57:54,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-31 23:57:54,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:57:54,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 23:57:54,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:57:54,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:57:54,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:57:54,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834398843] [2023-08-31 23:57:54,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834398843] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:57:54,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:57:54,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:57:54,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808434293] [2023-08-31 23:57:54,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:57:54,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:57:54,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:57:54,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:57:54,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:57:54,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 463 [2023-08-31 23:57:54,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:54,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:57:54,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 463 [2023-08-31 23:57:54,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:57:55,836 INFO L130 PetriNetUnfolder]: 579/1376 cut-off events. [2023-08-31 23:57:55,837 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 23:57:55,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2546 conditions, 1376 events. 579/1376 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9787 event pairs, 345 based on Foata normal form. 29/945 useless extension candidates. Maximal degree in co-relation 2540. Up to 591 conditions per place. [2023-08-31 23:57:55,844 INFO L137 encePairwiseOnDemand]: 453/463 looper letters, 49 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-08-31 23:57:55,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 306 flow [2023-08-31 23:57:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:57:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:57:55,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-31 23:57:55,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4614830813534917 [2023-08-31 23:57:55,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-31 23:57:55,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-31 23:57:55,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:57:55,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-31 23:57:55,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:55,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:55,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:55,853 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 168 flow. Second operand 3 states and 641 transitions. [2023-08-31 23:57:55,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 306 flow [2023-08-31 23:57:55,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:57:55,857 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 182 flow [2023-08-31 23:57:55,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2023-08-31 23:57:55,857 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-31 23:57:55,858 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 182 flow [2023-08-31 23:57:55,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:55,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:57:55,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 23:57:55,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-31 23:57:56,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:57:56,070 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)] === [2023-08-31 23:57:56,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:57:56,070 INFO L85 PathProgramCache]: Analyzing trace with hash 23314436, now seen corresponding path program 1 times [2023-08-31 23:57:56,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:57:56,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572174291] [2023-08-31 23:57:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:57:56,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:57:56,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:57:56,072 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:57:56,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-31 23:57:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:57:56,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-31 23:57:56,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:57:56,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 23:57:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:57:56,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:57:56,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:57:56,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572174291] [2023-08-31 23:57:56,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572174291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:57:56,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:57:56,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:57:56,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912278621] [2023-08-31 23:57:56,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:57:56,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:57:56,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:57:56,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:57:56,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:57:56,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 463 [2023-08-31 23:57:56,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:56,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:57:56,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 463 [2023-08-31 23:57:56,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:57:59,091 INFO L130 PetriNetUnfolder]: 517/1034 cut-off events. [2023-08-31 23:57:59,091 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2023-08-31 23:57:59,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2273 conditions, 1034 events. 517/1034 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6070 event pairs, 215 based on Foata normal form. 42/853 useless extension candidates. Maximal degree in co-relation 2266. Up to 550 conditions per place. [2023-08-31 23:57:59,096 INFO L137 encePairwiseOnDemand]: 455/463 looper letters, 66 selfloop transitions, 8 changer transitions 1/94 dead transitions. [2023-08-31 23:57:59,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 424 flow [2023-08-31 23:57:59,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:57:59,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:57:59,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 861 transitions. [2023-08-31 23:57:59,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46490280777537796 [2023-08-31 23:57:59,100 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 861 transitions. [2023-08-31 23:57:59,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 861 transitions. [2023-08-31 23:57:59,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:57:59,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 861 transitions. [2023-08-31 23:57:59,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 215.25) internal successors, (861), 4 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:59,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:59,115 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:59,115 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 182 flow. Second operand 4 states and 861 transitions. [2023-08-31 23:57:59,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 424 flow [2023-08-31 23:57:59,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:57:59,119 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 220 flow [2023-08-31 23:57:59,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-08-31 23:57:59,120 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -13 predicate places. [2023-08-31 23:57:59,120 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 220 flow [2023-08-31 23:57:59,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:59,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:57:59,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 23:57:59,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-31 23:57:59,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:57:59,332 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)] === [2023-08-31 23:57:59,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:57:59,333 INFO L85 PathProgramCache]: Analyzing trace with hash 23314435, now seen corresponding path program 1 times [2023-08-31 23:57:59,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:57:59,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799417090] [2023-08-31 23:57:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:57:59,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:57:59,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:57:59,334 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:57:59,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-31 23:57:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:57:59,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 23:57:59,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:57:59,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-31 23:57:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:57:59,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:57:59,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:57:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799417090] [2023-08-31 23:57:59,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799417090] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:57:59,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:57:59,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:57:59,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752110660] [2023-08-31 23:57:59,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:57:59,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:57:59,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:57:59,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:57:59,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:57:59,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 463 [2023-08-31 23:57:59,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:57:59,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:57:59,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 463 [2023-08-31 23:57:59,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:01,375 INFO L130 PetriNetUnfolder]: 561/1093 cut-off events. [2023-08-31 23:58:01,375 INFO L131 PetriNetUnfolder]: For 276/276 co-relation queries the response was YES. [2023-08-31 23:58:01,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2588 conditions, 1093 events. 561/1093 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6502 event pairs, 90 based on Foata normal form. 0/937 useless extension candidates. Maximal degree in co-relation 2579. Up to 648 conditions per place. [2023-08-31 23:58:01,381 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 68 selfloop transitions, 14 changer transitions 0/100 dead transitions. [2023-08-31 23:58:01,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 100 transitions, 465 flow [2023-08-31 23:58:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:58:01,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:58:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1045 transitions. [2023-08-31 23:58:01,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4514038876889849 [2023-08-31 23:58:01,387 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1045 transitions. [2023-08-31 23:58:01,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1045 transitions. [2023-08-31 23:58:01,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:01,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1045 transitions. [2023-08-31 23:58:01,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:01,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 463.0) internal successors, (2778), 6 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:01,394 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 463.0) internal successors, (2778), 6 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:01,394 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 220 flow. Second operand 5 states and 1045 transitions. [2023-08-31 23:58:01,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 100 transitions, 465 flow [2023-08-31 23:58:01,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 100 transitions, 445 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-31 23:58:01,401 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 298 flow [2023-08-31 23:58:01,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2023-08-31 23:58:01,404 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -7 predicate places. [2023-08-31 23:58:01,404 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 298 flow [2023-08-31 23:58:01,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:01,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:01,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 23:58:01,419 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 (9)] Ended with exit code 0 [2023-08-31 23:58:01,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:01,617 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)] === [2023-08-31 23:58:01,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:01,617 INFO L85 PathProgramCache]: Analyzing trace with hash 726180173, now seen corresponding path program 1 times [2023-08-31 23:58:01,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:01,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308870562] [2023-08-31 23:58:01,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:01,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:01,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:01,619 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:01,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-31 23:58:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:01,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 23:58:01,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:01,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 45 [2023-08-31 23:58:01,883 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 23:58:01,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 93 [2023-08-31 23:58:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:01,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:01,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:01,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308870562] [2023-08-31 23:58:01,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308870562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:01,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:01,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:58:01,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467647431] [2023-08-31 23:58:01,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:01,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:58:01,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:01,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:58:01,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:58:02,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-08-31 23:58:02,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:02,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:02,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-08-31 23:58:02,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:04,904 INFO L130 PetriNetUnfolder]: 713/1567 cut-off events. [2023-08-31 23:58:04,904 INFO L131 PetriNetUnfolder]: For 1159/1244 co-relation queries the response was YES. [2023-08-31 23:58:04,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3782 conditions, 1567 events. 713/1567 cut-off events. For 1159/1244 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10689 event pairs, 426 based on Foata normal form. 7/1284 useless extension candidates. Maximal degree in co-relation 3771. Up to 1022 conditions per place. [2023-08-31 23:58:04,911 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 52 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-08-31 23:58:04,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 476 flow [2023-08-31 23:58:04,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:58:04,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:58:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2023-08-31 23:58:04,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44852411807055437 [2023-08-31 23:58:04,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2023-08-31 23:58:04,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2023-08-31 23:58:04,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:04,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2023-08-31 23:58:04,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:04,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:04,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:04,920 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 298 flow. Second operand 3 states and 623 transitions. [2023-08-31 23:58:04,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 476 flow [2023-08-31 23:58:04,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 476 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:58:04,924 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 390 flow [2023-08-31 23:58:04,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=390, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2023-08-31 23:58:04,924 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2023-08-31 23:58:04,925 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 390 flow [2023-08-31 23:58:04,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:04,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:04,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:58:04,939 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 [2023-08-31 23:58:05,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:05,137 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)] === [2023-08-31 23:58:05,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:05,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1036749589, now seen corresponding path program 1 times [2023-08-31 23:58:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:05,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104770890] [2023-08-31 23:58:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:05,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:05,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:05,139 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:05,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-31 23:58:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:05,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 23:58:05,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:05,334 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:58:05,335 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:58:05,335 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:58:05,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-08-31 23:58:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:05,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:05,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:05,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104770890] [2023-08-31 23:58:05,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104770890] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:05,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:05,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:58:05,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70005229] [2023-08-31 23:58:05,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:05,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:58:05,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:05,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:58:05,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:58:05,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-08-31 23:58:05,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 390 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:05,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:05,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-08-31 23:58:05,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:08,381 INFO L130 PetriNetUnfolder]: 910/1868 cut-off events. [2023-08-31 23:58:08,381 INFO L131 PetriNetUnfolder]: For 2608/2729 co-relation queries the response was YES. [2023-08-31 23:58:08,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5521 conditions, 1868 events. 910/1868 cut-off events. For 2608/2729 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12418 event pairs, 501 based on Foata normal form. 7/1607 useless extension candidates. Maximal degree in co-relation 5508. Up to 1261 conditions per place. [2023-08-31 23:58:08,401 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 58 selfloop transitions, 17 changer transitions 0/95 dead transitions. [2023-08-31 23:58:08,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 95 transitions, 638 flow [2023-08-31 23:58:08,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:58:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:58:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-31 23:58:08,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44924406047516197 [2023-08-31 23:58:08,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-31 23:58:08,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-31 23:58:08,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:08,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-31 23:58:08,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:08,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:08,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:08,409 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 390 flow. Second operand 3 states and 624 transitions. [2023-08-31 23:58:08,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 95 transitions, 638 flow [2023-08-31 23:58:08,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 95 transitions, 606 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:58:08,415 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 524 flow [2023-08-31 23:58:08,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2023-08-31 23:58:08,416 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2023-08-31 23:58:08,416 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 524 flow [2023-08-31 23:58:08,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:08,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:08,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:58:08,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-31 23:58:08,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:08,629 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:08,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:08,629 INFO L85 PathProgramCache]: Analyzing trace with hash 930484587, now seen corresponding path program 1 times [2023-08-31 23:58:08,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:08,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423269109] [2023-08-31 23:58:08,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:08,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:08,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:08,631 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:08,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-31 23:58:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:08,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 23:58:08,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:08,838 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 23:58:08,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-31 23:58:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:08,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:08,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:08,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423269109] [2023-08-31 23:58:08,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423269109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:08,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:08,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:58:08,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039914434] [2023-08-31 23:58:08,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:08,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:58:08,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:08,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:58:08,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:58:09,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 463 [2023-08-31 23:58:09,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:09,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:09,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 463 [2023-08-31 23:58:09,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:10,088 INFO L130 PetriNetUnfolder]: 772/1665 cut-off events. [2023-08-31 23:58:10,088 INFO L131 PetriNetUnfolder]: For 3259/3396 co-relation queries the response was YES. [2023-08-31 23:58:10,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5442 conditions, 1665 events. 772/1665 cut-off events. For 3259/3396 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11272 event pairs, 414 based on Foata normal form. 0/1404 useless extension candidates. Maximal degree in co-relation 5428. Up to 984 conditions per place. [2023-08-31 23:58:10,097 INFO L137 encePairwiseOnDemand]: 453/463 looper letters, 55 selfloop transitions, 15 changer transitions 0/95 dead transitions. [2023-08-31 23:58:10,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 95 transitions, 684 flow [2023-08-31 23:58:10,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:58:10,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:58:10,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-08-31 23:58:10,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679625629949604 [2023-08-31 23:58:10,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-08-31 23:58:10,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-08-31 23:58:10,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:10,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-08-31 23:58:10,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:10,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:10,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:10,107 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 524 flow. Second operand 3 states and 650 transitions. [2023-08-31 23:58:10,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 95 transitions, 684 flow [2023-08-31 23:58:10,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 650 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:58:10,113 INFO L231 Difference]: Finished difference. Result has 84 places, 87 transitions, 508 flow [2023-08-31 23:58:10,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=84, PETRI_TRANSITIONS=87} [2023-08-31 23:58:10,114 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -2 predicate places. [2023-08-31 23:58:10,114 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 508 flow [2023-08-31 23:58:10,115 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) [2023-08-31 23:58:10,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:10,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:58:10,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-31 23:58:10,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:10,327 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:10,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:10,328 INFO L85 PathProgramCache]: Analyzing trace with hash 930484588, now seen corresponding path program 1 times [2023-08-31 23:58:10,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:10,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010596593] [2023-08-31 23:58:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:10,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:10,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:10,329 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:10,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-31 23:58:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:10,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 23:58:10,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:10,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:10,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-31 23:58:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:10,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:10,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:10,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010596593] [2023-08-31 23:58:10,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010596593] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:10,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:10,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:58:10,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406286113] [2023-08-31 23:58:10,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:10,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:58:10,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:10,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:58:10,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:58:10,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 463 [2023-08-31 23:58:10,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:10,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:10,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 463 [2023-08-31 23:58:10,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:11,487 INFO L130 PetriNetUnfolder]: 734/1575 cut-off events. [2023-08-31 23:58:11,487 INFO L131 PetriNetUnfolder]: For 3078/3214 co-relation queries the response was YES. [2023-08-31 23:58:11,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5027 conditions, 1575 events. 734/1575 cut-off events. For 3078/3214 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10488 event pairs, 448 based on Foata normal form. 4/1304 useless extension candidates. Maximal degree in co-relation 5013. Up to 1191 conditions per place. [2023-08-31 23:58:11,495 INFO L137 encePairwiseOnDemand]: 460/463 looper letters, 58 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-31 23:58:11,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 616 flow [2023-08-31 23:58:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:58:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:58:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-31 23:58:11,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4614830813534917 [2023-08-31 23:58:11,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-31 23:58:11,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-31 23:58:11,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:11,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-31 23:58:11,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:11,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:11,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:11,504 INFO L175 Difference]: Start difference. First operand has 84 places, 87 transitions, 508 flow. Second operand 3 states and 641 transitions. [2023-08-31 23:58:11,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 616 flow [2023-08-31 23:58:11,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 586 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:58:11,510 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 470 flow [2023-08-31 23:58:11,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2023-08-31 23:58:11,511 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2023-08-31 23:58:11,511 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 470 flow [2023-08-31 23:58:11,512 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) [2023-08-31 23:58:11,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:11,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:58:11,527 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 (13)] Ended with exit code 0 [2023-08-31 23:58:11,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:11,724 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:11,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:11,725 INFO L85 PathProgramCache]: Analyzing trace with hash 930485032, now seen corresponding path program 1 times [2023-08-31 23:58:11,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:11,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896973954] [2023-08-31 23:58:11,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:11,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:11,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:11,727 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:11,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-08-31 23:58:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:11,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-31 23:58:11,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:11,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 23:58:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:11,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:11,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:11,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896973954] [2023-08-31 23:58:11,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896973954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:11,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:11,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:58:11,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744698238] [2023-08-31 23:58:11,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:11,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:58:11,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:11,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:58:11,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:58:12,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 463 [2023-08-31 23:58:12,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 470 flow. Second operand has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:12,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:12,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 463 [2023-08-31 23:58:12,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:14,668 INFO L130 PetriNetUnfolder]: 764/1676 cut-off events. [2023-08-31 23:58:14,668 INFO L131 PetriNetUnfolder]: For 2801/2916 co-relation queries the response was YES. [2023-08-31 23:58:14,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5130 conditions, 1676 events. 764/1676 cut-off events. For 2801/2916 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11601 event pairs, 91 based on Foata normal form. 285/1789 useless extension candidates. Maximal degree in co-relation 5116. Up to 905 conditions per place. [2023-08-31 23:58:14,676 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 96 selfloop transitions, 6 changer transitions 1/125 dead transitions. [2023-08-31 23:58:14,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 125 transitions, 910 flow [2023-08-31 23:58:14,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:58:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:58:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 855 transitions. [2023-08-31 23:58:14,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46166306695464365 [2023-08-31 23:58:14,681 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 855 transitions. [2023-08-31 23:58:14,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 855 transitions. [2023-08-31 23:58:14,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:14,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 855 transitions. [2023-08-31 23:58:14,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:14,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:14,687 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:14,687 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 470 flow. Second operand 4 states and 855 transitions. [2023-08-31 23:58:14,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 125 transitions, 910 flow [2023-08-31 23:58:14,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 125 transitions, 908 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:58:14,693 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 509 flow [2023-08-31 23:58:14,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=509, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2023-08-31 23:58:14,694 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 1 predicate places. [2023-08-31 23:58:14,694 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 509 flow [2023-08-31 23:58:14,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:14,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:14,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:58:14,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-31 23:58:14,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:14,906 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:14,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:14,907 INFO L85 PathProgramCache]: Analyzing trace with hash 930485031, now seen corresponding path program 1 times [2023-08-31 23:58:14,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:14,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267990603] [2023-08-31 23:58:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:14,908 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:14,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:14,909 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:14,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-08-31 23:58:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:15,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 23:58:15,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:15,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-31 23:58:15,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:15,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:15,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:15,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267990603] [2023-08-31 23:58:15,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267990603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:15,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:15,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:58:15,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064899860] [2023-08-31 23:58:15,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:15,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:58:15,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:15,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:58:15,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:58:15,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 463 [2023-08-31 23:58:15,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 509 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:15,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:15,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 463 [2023-08-31 23:58:15,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:17,621 INFO L130 PetriNetUnfolder]: 1131/2072 cut-off events. [2023-08-31 23:58:17,621 INFO L131 PetriNetUnfolder]: For 3890/4040 co-relation queries the response was YES. [2023-08-31 23:58:17,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7116 conditions, 2072 events. 1131/2072 cut-off events. For 3890/4040 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12259 event pairs, 231 based on Foata normal form. 190/2104 useless extension candidates. Maximal degree in co-relation 7100. Up to 1117 conditions per place. [2023-08-31 23:58:17,631 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 97 selfloop transitions, 22 changer transitions 0/136 dead transitions. [2023-08-31 23:58:17,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 136 transitions, 1010 flow [2023-08-31 23:58:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:58:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:58:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1047 transitions. [2023-08-31 23:58:17,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45226781857451404 [2023-08-31 23:58:17,639 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1047 transitions. [2023-08-31 23:58:17,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1047 transitions. [2023-08-31 23:58:17,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:17,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1047 transitions. [2023-08-31 23:58:17,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.4) internal successors, (1047), 5 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:17,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 463.0) internal successors, (2778), 6 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:17,646 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 463.0) internal successors, (2778), 6 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:17,646 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 509 flow. Second operand 5 states and 1047 transitions. [2023-08-31 23:58:17,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 136 transitions, 1010 flow [2023-08-31 23:58:17,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 136 transitions, 1005 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:58:17,654 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 682 flow [2023-08-31 23:58:17,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=682, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2023-08-31 23:58:17,655 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2023-08-31 23:58:17,655 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 682 flow [2023-08-31 23:58:17,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:17,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:17,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:58:17,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-08-31 23:58:17,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:17,866 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:17,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:17,866 INFO L85 PathProgramCache]: Analyzing trace with hash -116036107, now seen corresponding path program 1 times [2023-08-31 23:58:17,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:17,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309195576] [2023-08-31 23:58:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:17,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:17,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:17,868 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:17,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-31 23:58:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:18,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 23:58:18,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:18,172 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_187| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_187| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_187|)))) is different from true [2023-08-31 23:58:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:18,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:18,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:18,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309195576] [2023-08-31 23:58:18,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309195576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:18,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:18,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:58:18,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855315351] [2023-08-31 23:58:18,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:18,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:58:18,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:18,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:58:18,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-08-31 23:58:18,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 463 [2023-08-31 23:58:18,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 682 flow. Second operand has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:18,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:18,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 463 [2023-08-31 23:58:18,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:19,462 INFO L130 PetriNetUnfolder]: 1848/3148 cut-off events. [2023-08-31 23:58:19,462 INFO L131 PetriNetUnfolder]: For 7934/7934 co-relation queries the response was YES. [2023-08-31 23:58:19,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11584 conditions, 3148 events. 1848/3148 cut-off events. For 7934/7934 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 17848 event pairs, 757 based on Foata normal form. 0/2855 useless extension candidates. Maximal degree in co-relation 11565. Up to 1526 conditions per place. [2023-08-31 23:58:19,477 INFO L137 encePairwiseOnDemand]: 441/463 looper letters, 84 selfloop transitions, 32 changer transitions 2/125 dead transitions. [2023-08-31 23:58:19,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 125 transitions, 1076 flow [2023-08-31 23:58:19,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:58:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:58:19,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 632 transitions. [2023-08-31 23:58:19,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3412526997840173 [2023-08-31 23:58:19,481 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 632 transitions. [2023-08-31 23:58:19,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 632 transitions. [2023-08-31 23:58:19,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:19,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 632 transitions. [2023-08-31 23:58:19,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:19,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:19,486 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:19,486 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 682 flow. Second operand 4 states and 632 transitions. [2023-08-31 23:58:19,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 125 transitions, 1076 flow [2023-08-31 23:58:19,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 125 transitions, 1076 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:58:19,495 INFO L231 Difference]: Finished difference. Result has 98 places, 111 transitions, 888 flow [2023-08-31 23:58:19,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=888, PETRI_PLACES=98, PETRI_TRANSITIONS=111} [2023-08-31 23:58:19,495 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2023-08-31 23:58:19,496 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 111 transitions, 888 flow [2023-08-31 23:58:19,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:19,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:19,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:58:19,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-08-31 23:58:19,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:19,713 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)] === [2023-08-31 23:58:19,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:19,713 INFO L85 PathProgramCache]: Analyzing trace with hash 985146853, now seen corresponding path program 1 times [2023-08-31 23:58:19,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:19,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418719170] [2023-08-31 23:58:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:19,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:19,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:19,715 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:19,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-31 23:58:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:20,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-31 23:58:20,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:20,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 23:58:20,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-31 23:58:20,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:20,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-31 23:58:20,094 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-31 23:58:20,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-31 23:58:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:20,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:20,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:20,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418719170] [2023-08-31 23:58:20,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418719170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:20,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:20,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:58:20,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075227005] [2023-08-31 23:58:20,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:20,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:58:20,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:58:20,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:58:20,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 463 [2023-08-31 23:58:20,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 111 transitions, 888 flow. Second operand has 5 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:20,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:20,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 463 [2023-08-31 23:58:20,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:22,630 INFO L130 PetriNetUnfolder]: 1651/2976 cut-off events. [2023-08-31 23:58:22,630 INFO L131 PetriNetUnfolder]: For 9526/9633 co-relation queries the response was YES. [2023-08-31 23:58:22,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12123 conditions, 2976 events. 1651/2976 cut-off events. For 9526/9633 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18633 event pairs, 470 based on Foata normal form. 28/2808 useless extension candidates. Maximal degree in co-relation 12102. Up to 1585 conditions per place. [2023-08-31 23:58:22,642 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 103 selfloop transitions, 25 changer transitions 0/154 dead transitions. [2023-08-31 23:58:22,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 154 transitions, 1401 flow [2023-08-31 23:58:22,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:58:22,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:58:22,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1211 transitions. [2023-08-31 23:58:22,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4359251259899208 [2023-08-31 23:58:22,645 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1211 transitions. [2023-08-31 23:58:22,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1211 transitions. [2023-08-31 23:58:22,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:22,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1211 transitions. [2023-08-31 23:58:22,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.83333333333334) internal successors, (1211), 6 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:22,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:22,652 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:22,652 INFO L175 Difference]: Start difference. First operand has 98 places, 111 transitions, 888 flow. Second operand 6 states and 1211 transitions. [2023-08-31 23:58:22,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 154 transitions, 1401 flow [2023-08-31 23:58:22,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 1317 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-08-31 23:58:22,668 INFO L231 Difference]: Finished difference. Result has 97 places, 109 transitions, 880 flow [2023-08-31 23:58:22,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=880, PETRI_PLACES=97, PETRI_TRANSITIONS=109} [2023-08-31 23:58:22,669 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 11 predicate places. [2023-08-31 23:58:22,669 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 109 transitions, 880 flow [2023-08-31 23:58:22,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:22,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:22,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:58:22,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-08-31 23:58:22,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:22,883 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:22,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:22,883 INFO L85 PathProgramCache]: Analyzing trace with hash 842498780, now seen corresponding path program 1 times [2023-08-31 23:58:22,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:22,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123041310] [2023-08-31 23:58:22,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:22,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:22,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:22,885 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:22,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-31 23:58:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:23,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-31 23:58:23,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:23,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 23:58:23,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-31 23:58:23,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:23,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-31 23:58:23,162 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-31 23:58:23,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-31 23:58:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:23,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:23,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:23,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123041310] [2023-08-31 23:58:23,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123041310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:23,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:23,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:58:23,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158667914] [2023-08-31 23:58:23,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:23,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:58:23,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:23,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:58:23,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:58:24,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 463 [2023-08-31 23:58:24,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 109 transitions, 880 flow. Second operand has 5 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:24,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:24,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 463 [2023-08-31 23:58:24,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:25,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 23:58:26,318 INFO L130 PetriNetUnfolder]: 2036/3646 cut-off events. [2023-08-31 23:58:26,318 INFO L131 PetriNetUnfolder]: For 11967/12125 co-relation queries the response was YES. [2023-08-31 23:58:26,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15215 conditions, 3646 events. 2036/3646 cut-off events. For 11967/12125 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 23645 event pairs, 667 based on Foata normal form. 33/3521 useless extension candidates. Maximal degree in co-relation 15194. Up to 2080 conditions per place. [2023-08-31 23:58:26,333 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 124 selfloop transitions, 25 changer transitions 0/164 dead transitions. [2023-08-31 23:58:26,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 164 transitions, 1531 flow [2023-08-31 23:58:26,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:58:26,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:58:26,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1220 transitions. [2023-08-31 23:58:26,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43916486681065514 [2023-08-31 23:58:26,337 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1220 transitions. [2023-08-31 23:58:26,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1220 transitions. [2023-08-31 23:58:26,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:26,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1220 transitions. [2023-08-31 23:58:26,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:26,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:26,344 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:26,344 INFO L175 Difference]: Start difference. First operand has 97 places, 109 transitions, 880 flow. Second operand 6 states and 1220 transitions. [2023-08-31 23:58:26,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 164 transitions, 1531 flow [2023-08-31 23:58:26,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 164 transitions, 1496 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:58:26,365 INFO L231 Difference]: Finished difference. Result has 96 places, 107 transitions, 919 flow [2023-08-31 23:58:26,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=919, PETRI_PLACES=96, PETRI_TRANSITIONS=107} [2023-08-31 23:58:26,365 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 10 predicate places. [2023-08-31 23:58:26,366 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 107 transitions, 919 flow [2023-08-31 23:58:26,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:26,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:26,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:58:26,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-08-31 23:58:26,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:26,579 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:26,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash 930438315, now seen corresponding path program 1 times [2023-08-31 23:58:26,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:26,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054952625] [2023-08-31 23:58:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:26,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:26,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:26,581 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:26,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-08-31 23:58:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:26,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 23:58:26,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:26,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:26,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:26,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054952625] [2023-08-31 23:58:26,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054952625] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:26,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:26,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:58:26,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711916951] [2023-08-31 23:58:26,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:26,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:58:26,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:26,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:58:26,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:58:26,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 463 [2023-08-31 23:58:26,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 107 transitions, 919 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:26,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:26,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 463 [2023-08-31 23:58:26,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:28,276 INFO L130 PetriNetUnfolder]: 107/263 cut-off events. [2023-08-31 23:58:28,276 INFO L131 PetriNetUnfolder]: For 677/719 co-relation queries the response was YES. [2023-08-31 23:58:28,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 263 events. 107/263 cut-off events. For 677/719 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1078 event pairs, 25 based on Foata normal form. 23/266 useless extension candidates. Maximal degree in co-relation 959. Up to 161 conditions per place. [2023-08-31 23:58:28,277 INFO L137 encePairwiseOnDemand]: 461/463 looper letters, 41 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2023-08-31 23:58:28,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 54 transitions, 451 flow [2023-08-31 23:58:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:58:28,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:58:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-31 23:58:28,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45788336933045354 [2023-08-31 23:58:28,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-31 23:58:28,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-31 23:58:28,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:28,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-31 23:58:28,280 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) [2023-08-31 23:58:28,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:28,282 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:28,282 INFO L175 Difference]: Start difference. First operand has 96 places, 107 transitions, 919 flow. Second operand 3 states and 636 transitions. [2023-08-31 23:58:28,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 54 transitions, 451 flow [2023-08-31 23:58:28,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 54 transitions, 269 flow, removed 25 selfloop flow, removed 23 redundant places. [2023-08-31 23:58:28,284 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 153 flow [2023-08-31 23:58:28,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-31 23:58:28,285 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -24 predicate places. [2023-08-31 23:58:28,285 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 153 flow [2023-08-31 23:58:28,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:28,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:28,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:58:28,298 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 (19)] Ended with exit code 0 [2023-08-31 23:58:28,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:28,497 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:28,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:28,497 INFO L85 PathProgramCache]: Analyzing trace with hash -487331399, now seen corresponding path program 1 times [2023-08-31 23:58:28,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:28,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334221869] [2023-08-31 23:58:28,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:28,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:28,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:28,499 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:28,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-08-31 23:58:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:28,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-31 23:58:28,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:28,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 23:58:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:28,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:28,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:28,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334221869] [2023-08-31 23:58:28,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334221869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:28,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:28,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:58:28,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663823690] [2023-08-31 23:58:28,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:28,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:58:28,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:28,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:58:28,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:58:29,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 463 [2023-08-31 23:58:29,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:29,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:29,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 463 [2023-08-31 23:58:29,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:30,291 INFO L130 PetriNetUnfolder]: 102/254 cut-off events. [2023-08-31 23:58:30,291 INFO L131 PetriNetUnfolder]: For 154/158 co-relation queries the response was YES. [2023-08-31 23:58:30,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 254 events. 102/254 cut-off events. For 154/158 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 988 event pairs, 55 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 663. Up to 120 conditions per place. [2023-08-31 23:58:30,292 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 30 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2023-08-31 23:58:30,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 249 flow [2023-08-31 23:58:30,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:58:30,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:58:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 633 transitions. [2023-08-31 23:58:30,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557235421166307 [2023-08-31 23:58:30,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 633 transitions. [2023-08-31 23:58:30,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 633 transitions. [2023-08-31 23:58:30,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:30,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 633 transitions. [2023-08-31 23:58:30,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:30,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:30,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:30,297 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 153 flow. Second operand 3 states and 633 transitions. [2023-08-31 23:58:30,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 249 flow [2023-08-31 23:58:30,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:58:30,299 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 168 flow [2023-08-31 23:58:30,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-08-31 23:58:30,300 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -26 predicate places. [2023-08-31 23:58:30,300 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 168 flow [2023-08-31 23:58:30,300 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) [2023-08-31 23:58:30,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:30,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:58:30,312 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 [2023-08-31 23:58:30,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:30,512 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:30,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:30,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1341240180, now seen corresponding path program 1 times [2023-08-31 23:58:30,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:30,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750198742] [2023-08-31 23:58:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:30,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:30,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:30,514 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:30,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-31 23:58:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:30,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 23:58:30,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:30,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-31 23:58:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:30,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:30,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:30,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750198742] [2023-08-31 23:58:30,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750198742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:30,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:30,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:58:30,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951718438] [2023-08-31 23:58:30,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:30,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:58:30,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:30,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:58:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:58:30,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 463 [2023-08-31 23:58:30,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:30,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:30,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 463 [2023-08-31 23:58:30,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:32,373 INFO L130 PetriNetUnfolder]: 102/248 cut-off events. [2023-08-31 23:58:32,373 INFO L131 PetriNetUnfolder]: For 188/192 co-relation queries the response was YES. [2023-08-31 23:58:32,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 248 events. 102/248 cut-off events. For 188/192 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 956 event pairs, 55 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 683. Up to 120 conditions per place. [2023-08-31 23:58:32,375 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 30 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2023-08-31 23:58:32,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 47 transitions, 264 flow [2023-08-31 23:58:32,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:58:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:58:32,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-31 23:58:32,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44924406047516197 [2023-08-31 23:58:32,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-31 23:58:32,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-31 23:58:32,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:32,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-31 23:58:32,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:32,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:32,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:32,380 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 168 flow. Second operand 3 states and 624 transitions. [2023-08-31 23:58:32,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 47 transitions, 264 flow [2023-08-31 23:58:32,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 47 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:58:32,381 INFO L231 Difference]: Finished difference. Result has 58 places, 42 transitions, 164 flow [2023-08-31 23:58:32,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2023-08-31 23:58:32,382 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -28 predicate places. [2023-08-31 23:58:32,382 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 164 flow [2023-08-31 23:58:32,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:32,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:32,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:58:32,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-08-31 23:58:32,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:32,595 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:32,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2072499635, now seen corresponding path program 1 times [2023-08-31 23:58:32,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:32,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292635698] [2023-08-31 23:58:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:32,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:32,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:32,597 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:32,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-31 23:58:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:32,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-31 23:58:32,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:32,901 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 [2023-08-31 23:58:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:32,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:32,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:32,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292635698] [2023-08-31 23:58:32,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292635698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:32,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:32,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:58:32,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916502778] [2023-08-31 23:58:32,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:32,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:58:32,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:32,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:58:32,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:58:32,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 463 [2023-08-31 23:58:32,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:32,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:32,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 463 [2023-08-31 23:58:32,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:34,118 INFO L130 PetriNetUnfolder]: 46/153 cut-off events. [2023-08-31 23:58:34,119 INFO L131 PetriNetUnfolder]: For 117/120 co-relation queries the response was YES. [2023-08-31 23:58:34,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 153 events. 46/153 cut-off events. For 117/120 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 503 event pairs, 17 based on Foata normal form. 15/160 useless extension candidates. Maximal degree in co-relation 417. Up to 74 conditions per place. [2023-08-31 23:58:34,120 INFO L137 encePairwiseOnDemand]: 458/463 looper letters, 37 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-08-31 23:58:34,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 287 flow [2023-08-31 23:58:34,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:58:34,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:58:34,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 835 transitions. [2023-08-31 23:58:34,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4508639308855292 [2023-08-31 23:58:34,122 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 835 transitions. [2023-08-31 23:58:34,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 835 transitions. [2023-08-31 23:58:34,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:34,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 835 transitions. [2023-08-31 23:58:34,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:34,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:34,125 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:34,125 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 164 flow. Second operand 4 states and 835 transitions. [2023-08-31 23:58:34,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 287 flow [2023-08-31 23:58:34,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 246 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-31 23:58:34,126 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 143 flow [2023-08-31 23:58:34,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-08-31 23:58:34,126 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -29 predicate places. [2023-08-31 23:58:34,126 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 143 flow [2023-08-31 23:58:34,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:34,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:34,126 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] [2023-08-31 23:58:34,137 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 [2023-08-31 23:58:34,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:34,333 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:34,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:34,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1978086337, now seen corresponding path program 2 times [2023-08-31 23:58:34,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:34,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496182350] [2023-08-31 23:58:34,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 23:58:34,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:34,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:34,335 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:34,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-08-31 23:58:34,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 23:58:34,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:58:34,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-31 23:58:34,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:34,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:34,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:34,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:34,917 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:58:34,918 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:58:34,919 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 [2023-08-31 23:58:34,990 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 23:58:34,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 73 [2023-08-31 23:58:35,085 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-31 23:58:35,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2023-08-31 23:58:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:35,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:35,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:35,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496182350] [2023-08-31 23:58:35,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496182350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:35,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:35,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 23:58:35,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513260486] [2023-08-31 23:58:35,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:35,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 23:58:35,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:35,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 23:58:35,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 23:58:36,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 463 [2023-08-31 23:58:36,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 185.71428571428572) internal successors, (1300), 7 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:36,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:36,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 463 [2023-08-31 23:58:36,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:38,222 INFO L130 PetriNetUnfolder]: 62/187 cut-off events. [2023-08-31 23:58:38,222 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 23:58:38,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 187 events. 62/187 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 614 event pairs, 17 based on Foata normal form. 1/172 useless extension candidates. Maximal degree in co-relation 484. Up to 62 conditions per place. [2023-08-31 23:58:38,223 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 47 selfloop transitions, 18 changer transitions 0/71 dead transitions. [2023-08-31 23:58:38,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 71 transitions, 375 flow [2023-08-31 23:58:38,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:58:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:58:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1160 transitions. [2023-08-31 23:58:38,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175665946724262 [2023-08-31 23:58:38,226 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1160 transitions. [2023-08-31 23:58:38,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1160 transitions. [2023-08-31 23:58:38,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:38,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1160 transitions. [2023-08-31 23:58:38,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 193.33333333333334) internal successors, (1160), 6 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:38,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:38,230 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:38,230 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 143 flow. Second operand 6 states and 1160 transitions. [2023-08-31 23:58:38,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 71 transitions, 375 flow [2023-08-31 23:58:38,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 71 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:58:38,232 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 246 flow [2023-08-31 23:58:38,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2023-08-31 23:58:38,232 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -25 predicate places. [2023-08-31 23:58:38,232 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 246 flow [2023-08-31 23:58:38,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 185.71428571428572) internal successors, (1300), 7 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:38,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:38,233 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] [2023-08-31 23:58:38,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-08-31 23:58:38,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:38,448 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:38,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:38,448 INFO L85 PathProgramCache]: Analyzing trace with hash -936881934, now seen corresponding path program 1 times [2023-08-31 23:58:38,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:38,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969737525] [2023-08-31 23:58:38,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:38,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:38,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:38,450 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:58:38,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-31 23:58:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:38,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-31 23:58:38,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:38,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-31 23:58:38,924 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 23:58:38,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-31 23:58:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:38,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:38,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:38,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969737525] [2023-08-31 23:58:38,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969737525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:38,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:38,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:58:38,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088732914] [2023-08-31 23:58:38,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:38,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:58:38,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:38,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:58:38,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:58:39,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 463 [2023-08-31 23:58:39,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:39,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:39,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 463 [2023-08-31 23:58:39,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:40,989 INFO L130 PetriNetUnfolder]: 54/179 cut-off events. [2023-08-31 23:58:40,989 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2023-08-31 23:58:40,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 179 events. 54/179 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 607 event pairs, 24 based on Foata normal form. 1/171 useless extension candidates. Maximal degree in co-relation 491. Up to 82 conditions per place. [2023-08-31 23:58:40,990 INFO L137 encePairwiseOnDemand]: 454/463 looper letters, 31 selfloop transitions, 18 changer transitions 0/55 dead transitions. [2023-08-31 23:58:40,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 343 flow [2023-08-31 23:58:40,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:58:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:58:40,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 757 transitions. [2023-08-31 23:58:40,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4087473002159827 [2023-08-31 23:58:40,991 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 757 transitions. [2023-08-31 23:58:40,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 757 transitions. [2023-08-31 23:58:40,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:40,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 757 transitions. [2023-08-31 23:58:40,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:40,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:40,994 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:40,994 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 246 flow. Second operand 4 states and 757 transitions. [2023-08-31 23:58:40,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 343 flow [2023-08-31 23:58:40,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:58:40,996 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 257 flow [2023-08-31 23:58:40,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2023-08-31 23:58:40,996 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -25 predicate places. [2023-08-31 23:58:40,996 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 257 flow [2023-08-31 23:58:40,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.6) internal successors, (918), 5 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:58:40,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:40,997 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] [2023-08-31 23:58:41,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-08-31 23:58:41,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:41,201 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:41,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1017490362, now seen corresponding path program 1 times [2023-08-31 23:58:41,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:41,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919061691] [2023-08-31 23:58:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:58:41,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:58:41,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:41,203 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) [2023-08-31 23:58:41,203 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 [2023-08-31 23:58:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:58:41,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-31 23:58:41,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:41,673 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 [2023-08-31 23:58:41,689 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-31 23:58:41,689 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 [2023-08-31 23:58:41,750 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-31 23:58:41,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-31 23:58:41,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:41,906 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 [2023-08-31 23:58:42,137 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 [2023-08-31 23:58:42,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:42,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:42,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:42,291 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:58:42,292 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:58:42,293 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 [2023-08-31 23:58:42,580 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-31 23:58:42,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2023-08-31 23:58:42,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 110 [2023-08-31 23:58:42,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 118 [2023-08-31 23:58:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:46,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:46,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:46,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919061691] [2023-08-31 23:58:46,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919061691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:46,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:46,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 23:58:46,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624552718] [2023-08-31 23:58:46,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:46,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 23:58:46,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:46,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 23:58:46,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-31 23:58:55,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 23:58:58,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 23:59:03,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-31 23:59:03,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 257 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:03,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:59:03,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-31 23:59:03,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:59:10,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 23:59:11,775 INFO L130 PetriNetUnfolder]: 114/308 cut-off events. [2023-08-31 23:59:11,775 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2023-08-31 23:59:11,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 308 events. 114/308 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1242 event pairs, 28 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 917. Up to 178 conditions per place. [2023-08-31 23:59:11,777 INFO L137 encePairwiseOnDemand]: 448/463 looper letters, 86 selfloop transitions, 26 changer transitions 0/115 dead transitions. [2023-08-31 23:59:11,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 115 transitions, 767 flow [2023-08-31 23:59:11,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 23:59:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 23:59:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2193 transitions. [2023-08-31 23:59:11,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39470842332613393 [2023-08-31 23:59:11,780 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2193 transitions. [2023-08-31 23:59:11,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2193 transitions. [2023-08-31 23:59:11,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:59:11,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2193 transitions. [2023-08-31 23:59:11,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 182.75) internal successors, (2193), 12 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:11,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:11,789 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:11,789 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 257 flow. Second operand 12 states and 2193 transitions. [2023-08-31 23:59:11,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 115 transitions, 767 flow [2023-08-31 23:59:11,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 115 transitions, 703 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:59:11,792 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 429 flow [2023-08-31 23:59:11,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=429, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2023-08-31 23:59:11,793 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -12 predicate places. [2023-08-31 23:59:11,793 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 429 flow [2023-08-31 23:59:11,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:11,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:59:11,794 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] [2023-08-31 23:59:11,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-08-31 23:59:12,009 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 [2023-08-31 23:59:12,009 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:59:12,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:59:12,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1768874920, now seen corresponding path program 2 times [2023-08-31 23:59:12,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:59:12,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504064416] [2023-08-31 23:59:12,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 23:59:12,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:59:12,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:59:12,013 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) [2023-08-31 23:59:12,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-08-31 23:59:12,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 23:59:12,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:59:12,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-31 23:59:12,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:59:12,560 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-31 23:59:12,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-31 23:59:12,579 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 [2023-08-31 23:59:12,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:12,585 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 [2023-08-31 23:59:12,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:12,718 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 [2023-08-31 23:59:13,137 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 [2023-08-31 23:59:13,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:13,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:13,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:13,371 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:13,371 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:13,373 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 [2023-08-31 23:59:13,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:59:13,750 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 [2023-08-31 23:59:13,821 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-31 23:59:13,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 215 [2023-08-31 23:59:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:59:13,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:59:13,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:59:13,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504064416] [2023-08-31 23:59:13,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504064416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:59:13,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:59:13,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 23:59:13,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656289770] [2023-08-31 23:59:13,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:59:13,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 23:59:13,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:59:13,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 23:59:13,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-31 23:59:17,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-31 23:59:17,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 429 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:17,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:59:17,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-31 23:59:17,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:59:21,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 23:59:23,901 INFO L130 PetriNetUnfolder]: 118/328 cut-off events. [2023-08-31 23:59:23,902 INFO L131 PetriNetUnfolder]: For 322/322 co-relation queries the response was YES. [2023-08-31 23:59:23,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 328 events. 118/328 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1387 event pairs, 38 based on Foata normal form. 1/319 useless extension candidates. Maximal degree in co-relation 1115. Up to 212 conditions per place. [2023-08-31 23:59:23,903 INFO L137 encePairwiseOnDemand]: 447/463 looper letters, 87 selfloop transitions, 24 changer transitions 0/114 dead transitions. [2023-08-31 23:59:23,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 114 transitions, 826 flow [2023-08-31 23:59:23,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 23:59:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 23:59:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2013 transitions. [2023-08-31 23:59:23,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952483801295896 [2023-08-31 23:59:23,907 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2013 transitions. [2023-08-31 23:59:23,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2013 transitions. [2023-08-31 23:59:23,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:59:23,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2013 transitions. [2023-08-31 23:59:23,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:23,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:23,914 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:23,915 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 429 flow. Second operand 11 states and 2013 transitions. [2023-08-31 23:59:23,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 114 transitions, 826 flow [2023-08-31 23:59:23,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 114 transitions, 822 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-31 23:59:23,918 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 533 flow [2023-08-31 23:59:23,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=533, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2023-08-31 23:59:23,919 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2023-08-31 23:59:23,919 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 533 flow [2023-08-31 23:59:23,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:23,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:59:23,920 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] [2023-08-31 23:59:23,939 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 [2023-08-31 23:59:24,134 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 [2023-08-31 23:59:24,135 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)] === [2023-08-31 23:59:24,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:59:24,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1962004304, now seen corresponding path program 3 times [2023-08-31 23:59:24,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:59:24,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079742421] [2023-08-31 23:59:24,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 23:59:24,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:59:24,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:59:24,137 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) [2023-08-31 23:59:24,138 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 [2023-08-31 23:59:24,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 23:59:24,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:59:24,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-31 23:59:24,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:59:24,658 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-31 23:59:24,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-31 23:59:24,671 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 [2023-08-31 23:59:24,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:24,679 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 [2023-08-31 23:59:24,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:24,829 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 [2023-08-31 23:59:25,116 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 [2023-08-31 23:59:25,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:25,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:25,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:25,256 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:25,257 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:25,258 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 [2023-08-31 23:59:25,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:59:25,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 58 [2023-08-31 23:59:25,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:25,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:25,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:25,554 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:25,555 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:25,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 209 [2023-08-31 23:59:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:59:25,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:59:25,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:59:25,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079742421] [2023-08-31 23:59:25,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079742421] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:59:25,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:59:25,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 23:59:25,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568206301] [2023-08-31 23:59:25,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:59:25,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 23:59:25,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:59:25,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 23:59:25,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-08-31 23:59:28,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 23:59:30,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 463 [2023-08-31 23:59:30,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 533 flow. Second operand has 11 states, 11 states have (on average 179.9090909090909) internal successors, (1979), 11 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:30,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:59:30,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 463 [2023-08-31 23:59:30,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:59:35,979 INFO L130 PetriNetUnfolder]: 119/340 cut-off events. [2023-08-31 23:59:35,979 INFO L131 PetriNetUnfolder]: For 437/437 co-relation queries the response was YES. [2023-08-31 23:59:35,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 340 events. 119/340 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1483 event pairs, 32 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 1228. Up to 223 conditions per place. [2023-08-31 23:59:35,981 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 93 selfloop transitions, 22 changer transitions 0/118 dead transitions. [2023-08-31 23:59:35,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 118 transitions, 937 flow [2023-08-31 23:59:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 23:59:35,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 23:59:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2047 transitions. [2023-08-31 23:59:35,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40192420969958764 [2023-08-31 23:59:35,983 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2047 transitions. [2023-08-31 23:59:35,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2047 transitions. [2023-08-31 23:59:35,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:59:35,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2047 transitions. [2023-08-31 23:59:35,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 186.0909090909091) internal successors, (2047), 11 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:35,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:35,989 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:35,989 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 533 flow. Second operand 11 states and 2047 transitions. [2023-08-31 23:59:35,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 118 transitions, 937 flow [2023-08-31 23:59:35,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 118 transitions, 898 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-31 23:59:35,994 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 553 flow [2023-08-31 23:59:35,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=553, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2023-08-31 23:59:35,994 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2023-08-31 23:59:35,994 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 553 flow [2023-08-31 23:59:35,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 179.9090909090909) internal successors, (1979), 11 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:35,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:59:35,995 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] [2023-08-31 23:59:36,012 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 [2023-08-31 23:59:36,210 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 [2023-08-31 23:59:36,210 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:59:36,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:59:36,210 INFO L85 PathProgramCache]: Analyzing trace with hash -491551967, now seen corresponding path program 1 times [2023-08-31 23:59:36,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:59:36,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949125191] [2023-08-31 23:59:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:59:36,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:59:36,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:59:36,212 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) [2023-08-31 23:59:36,217 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 [2023-08-31 23:59:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:59:36,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-31 23:59:36,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:59:36,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:59:36,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:59:36,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:59:36,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949125191] [2023-08-31 23:59:36,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949125191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:59:36,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:59:36,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:59:36,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527320590] [2023-08-31 23:59:36,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:59:36,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:59:36,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:59:36,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:59:36,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:59:37,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 463 [2023-08-31 23:59:37,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 553 flow. Second operand has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:37,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:59:37,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 463 [2023-08-31 23:59:37,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:59:38,642 INFO L130 PetriNetUnfolder]: 128/425 cut-off events. [2023-08-31 23:59:38,642 INFO L131 PetriNetUnfolder]: For 657/658 co-relation queries the response was YES. [2023-08-31 23:59:38,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 425 events. 128/425 cut-off events. For 657/658 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2299 event pairs, 56 based on Foata normal form. 11/420 useless extension candidates. Maximal degree in co-relation 1518. Up to 213 conditions per place. [2023-08-31 23:59:38,644 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 88 selfloop transitions, 22 changer transitions 0/117 dead transitions. [2023-08-31 23:59:38,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 117 transitions, 1035 flow [2023-08-31 23:59:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:59:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:59:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1168 transitions. [2023-08-31 23:59:38,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42044636429085674 [2023-08-31 23:59:38,646 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1168 transitions. [2023-08-31 23:59:38,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1168 transitions. [2023-08-31 23:59:38,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:59:38,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1168 transitions. [2023-08-31 23:59:38,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 194.66666666666666) internal successors, (1168), 6 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:38,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:38,650 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:38,650 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 553 flow. Second operand 6 states and 1168 transitions. [2023-08-31 23:59:38,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 117 transitions, 1035 flow [2023-08-31 23:59:38,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 981 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-31 23:59:38,653 INFO L231 Difference]: Finished difference. Result has 85 places, 88 transitions, 708 flow [2023-08-31 23:59:38,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=708, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2023-08-31 23:59:38,654 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2023-08-31 23:59:38,654 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 708 flow [2023-08-31 23:59:38,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:38,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:59:38,654 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] [2023-08-31 23:59:38,665 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 [2023-08-31 23:59:38,856 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 [2023-08-31 23:59:38,856 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:59:38,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:59:38,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1236749071, now seen corresponding path program 2 times [2023-08-31 23:59:38,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:59:38,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396802736] [2023-08-31 23:59:38,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 23:59:38,858 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 [2023-08-31 23:59:38,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:59:38,858 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) [2023-08-31 23:59:38,859 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 [2023-08-31 23:59:39,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 23:59:39,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:59:39,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-31 23:59:39,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:59:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:59:39,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:59:39,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:59:39,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396802736] [2023-08-31 23:59:39,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396802736] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:59:39,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:59:39,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:59:39,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183441901] [2023-08-31 23:59:39,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:59:39,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:59:39,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:59:39,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:59:39,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:59:39,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 463 [2023-08-31 23:59:39,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 708 flow. Second operand has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:39,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:59:39,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 463 [2023-08-31 23:59:39,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:59:40,862 INFO L130 PetriNetUnfolder]: 149/491 cut-off events. [2023-08-31 23:59:40,862 INFO L131 PetriNetUnfolder]: For 1081/1082 co-relation queries the response was YES. [2023-08-31 23:59:40,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1810 conditions, 491 events. 149/491 cut-off events. For 1081/1082 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2852 event pairs, 20 based on Foata normal form. 12/499 useless extension candidates. Maximal degree in co-relation 1789. Up to 258 conditions per place. [2023-08-31 23:59:40,864 INFO L137 encePairwiseOnDemand]: 453/463 looper letters, 86 selfloop transitions, 24 changer transitions 0/118 dead transitions. [2023-08-31 23:59:40,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 118 transitions, 1112 flow [2023-08-31 23:59:40,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:59:40,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:59:40,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1168 transitions. [2023-08-31 23:59:40,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42044636429085674 [2023-08-31 23:59:40,866 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1168 transitions. [2023-08-31 23:59:40,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1168 transitions. [2023-08-31 23:59:40,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:59:40,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1168 transitions. [2023-08-31 23:59:40,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 194.66666666666666) internal successors, (1168), 6 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:40,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:40,870 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:40,870 INFO L175 Difference]: Start difference. First operand has 85 places, 88 transitions, 708 flow. Second operand 6 states and 1168 transitions. [2023-08-31 23:59:40,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 118 transitions, 1112 flow [2023-08-31 23:59:40,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 118 transitions, 1073 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-31 23:59:40,874 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 850 flow [2023-08-31 23:59:40,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=850, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2023-08-31 23:59:40,874 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 2 predicate places. [2023-08-31 23:59:40,875 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 850 flow [2023-08-31 23:59:40,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:40,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:59:40,875 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] [2023-08-31 23:59:40,887 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 [2023-08-31 23:59:41,080 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 [2023-08-31 23:59:41,081 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)] === [2023-08-31 23:59:41,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:59:41,081 INFO L85 PathProgramCache]: Analyzing trace with hash -579667442, now seen corresponding path program 4 times [2023-08-31 23:59:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:59:41,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776230785] [2023-08-31 23:59:41,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 23:59:41,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:59:41,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:59:41,083 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) [2023-08-31 23:59:41,085 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 [2023-08-31 23:59:41,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 23:59:41,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:59:41,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-31 23:59:41,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:59:41,573 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-31 23:59:41,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-31 23:59:41,595 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 [2023-08-31 23:59:41,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:41,603 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 63 treesize of output 51 [2023-08-31 23:59:41,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:41,748 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 [2023-08-31 23:59:41,974 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 [2023-08-31 23:59:42,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:42,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:42,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:42,173 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:42,174 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:42,175 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 [2023-08-31 23:59:42,305 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-31 23:59:42,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2023-08-31 23:59:42,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 110 [2023-08-31 23:59:42,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 118 [2023-08-31 23:59:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:59:44,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:59:44,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:59:44,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776230785] [2023-08-31 23:59:44,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776230785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:59:44,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:59:44,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 23:59:44,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681068991] [2023-08-31 23:59:44,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:59:44,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 23:59:44,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:59:44,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 23:59:44,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-31 23:59:53,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-31 23:59:53,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 850 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:59:53,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:59:53,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-31 23:59:53,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:00,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:00:01,164 INFO L130 PetriNetUnfolder]: 178/550 cut-off events. [2023-09-01 00:00:01,164 INFO L131 PetriNetUnfolder]: For 1587/1587 co-relation queries the response was YES. [2023-09-01 00:00:01,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2210 conditions, 550 events. 178/550 cut-off events. For 1587/1587 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3195 event pairs, 61 based on Foata normal form. 2/549 useless extension candidates. Maximal degree in co-relation 2188. Up to 319 conditions per place. [2023-09-01 00:00:01,167 INFO L137 encePairwiseOnDemand]: 449/463 looper letters, 104 selfloop transitions, 33 changer transitions 0/139 dead transitions. [2023-09-01 00:00:01,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 139 transitions, 1386 flow [2023-09-01 00:00:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 00:00:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 00:00:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2364 transitions. [2023-09-01 00:00:01,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39275627180594785 [2023-09-01 00:00:01,171 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2364 transitions. [2023-09-01 00:00:01,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2364 transitions. [2023-09-01 00:00:01,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:01,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2364 transitions. [2023-09-01 00:00:01,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 181.84615384615384) internal successors, (2364), 13 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:01,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:01,177 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:01,177 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 850 flow. Second operand 13 states and 2364 transitions. [2023-09-01 00:00:01,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 139 transitions, 1386 flow [2023-09-01 00:00:01,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 139 transitions, 1326 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-09-01 00:00:01,184 INFO L231 Difference]: Finished difference. Result has 100 places, 99 transitions, 939 flow [2023-09-01 00:00:01,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=939, PETRI_PLACES=100, PETRI_TRANSITIONS=99} [2023-09-01 00:00:01,184 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 14 predicate places. [2023-09-01 00:00:01,184 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 99 transitions, 939 flow [2023-09-01 00:00:01,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:01,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:01,185 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] [2023-09-01 00:00:01,198 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 (30)] Ended with exit code 0 [2023-09-01 00:00:01,388 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 [2023-09-01 00:00:01,389 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:01,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1690661023, now seen corresponding path program 3 times [2023-09-01 00:00:01,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:01,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810570300] [2023-09-01 00:00:01,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 00:00:01,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:01,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:01,391 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) [2023-09-01 00:00:01,393 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 [2023-09-01 00:00:01,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 00:00:01,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 00:00:01,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 00:00:01,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:01,814 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 [2023-09-01 00:00:01,819 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 [2023-09-01 00:00:01,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:01,940 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 [2023-09-01 00:00:01,955 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 00:00:01,956 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 [2023-09-01 00:00:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:01,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:01,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:01,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810570300] [2023-09-01 00:00:01,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810570300] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:01,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:01,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:00:01,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259786581] [2023-09-01 00:00:01,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:01,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 00:00:01,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:01,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 00:00:01,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-09-01 00:00:02,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 463 [2023-09-01 00:00:02,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 939 flow. Second operand has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:02,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:02,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 463 [2023-09-01 00:00:02,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:03,056 INFO L130 PetriNetUnfolder]: 137/478 cut-off events. [2023-09-01 00:00:03,057 INFO L131 PetriNetUnfolder]: For 1667/1680 co-relation queries the response was YES. [2023-09-01 00:00:03,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 478 events. 137/478 cut-off events. For 1667/1680 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2834 event pairs, 87 based on Foata normal form. 8/467 useless extension candidates. Maximal degree in co-relation 1945. Up to 410 conditions per place. [2023-09-01 00:00:03,059 INFO L137 encePairwiseOnDemand]: 459/463 looper letters, 77 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-09-01 00:00:03,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 93 transitions, 1022 flow [2023-09-01 00:00:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:00:03,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:00:03,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-09-01 00:00:03,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4038876889848812 [2023-09-01 00:00:03,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-09-01 00:00:03,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-09-01 00:00:03,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:03,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-09-01 00:00:03,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:03,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:03,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:03,062 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 939 flow. Second operand 3 states and 561 transitions. [2023-09-01 00:00:03,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 93 transitions, 1022 flow [2023-09-01 00:00:03,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 93 transitions, 934 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-09-01 00:00:03,067 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 780 flow [2023-09-01 00:00:03,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=780, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2023-09-01 00:00:03,068 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 4 predicate places. [2023-09-01 00:00:03,068 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 780 flow [2023-09-01 00:00:03,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:03,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:03,068 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] [2023-09-01 00:00:03,081 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 [2023-09-01 00:00:03,272 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 [2023-09-01 00:00:03,273 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)] === [2023-09-01 00:00:03,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:03,274 INFO L85 PathProgramCache]: Analyzing trace with hash 91935326, now seen corresponding path program 5 times [2023-09-01 00:00:03,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:03,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852863633] [2023-09-01 00:00:03,274 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 00:00:03,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:00:03,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:03,275 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) [2023-09-01 00:00:03,276 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 [2023-09-01 00:00:03,795 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 00:00:03,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 00:00:03,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 66 conjunts are in the unsatisfiable core [2023-09-01 00:00:03,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:03,853 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 [2023-09-01 00:00:03,868 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:00:03,869 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 [2023-09-01 00:00:03,914 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-09-01 00:00:03,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-09-01 00:00:04,181 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 [2023-09-01 00:00:04,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:04,267 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 [2023-09-01 00:00:04,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:04,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:04,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:04,389 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:00:04,389 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:00:04,390 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 [2023-09-01 00:00:04,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 00:00:04,789 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 [2023-09-01 00:00:04,866 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:00:04,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 215 [2023-09-01 00:00:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:04,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:04,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:04,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852863633] [2023-09-01 00:00:04,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852863633] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:04,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:04,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 00:00:04,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819091608] [2023-09-01 00:00:04,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:04,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 00:00:04,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:04,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 00:00:04,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-09-01 00:00:08,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-09-01 00:00:08,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 780 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:08,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:08,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-09-01 00:00:08,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:15,753 INFO L130 PetriNetUnfolder]: 205/634 cut-off events. [2023-09-01 00:00:15,753 INFO L131 PetriNetUnfolder]: For 1642/1642 co-relation queries the response was YES. [2023-09-01 00:00:15,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2471 conditions, 634 events. 205/634 cut-off events. For 1642/1642 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3902 event pairs, 65 based on Foata normal form. 3/634 useless extension candidates. Maximal degree in co-relation 2448. Up to 356 conditions per place. [2023-09-01 00:00:15,756 INFO L137 encePairwiseOnDemand]: 449/463 looper letters, 99 selfloop transitions, 45 changer transitions 0/146 dead transitions. [2023-09-01 00:00:15,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 146 transitions, 1392 flow [2023-09-01 00:00:15,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 00:00:15,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 00:00:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2005 transitions. [2023-09-01 00:00:15,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936775967013548 [2023-09-01 00:00:15,759 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2005 transitions. [2023-09-01 00:00:15,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2005 transitions. [2023-09-01 00:00:15,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:15,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2005 transitions. [2023-09-01 00:00:15,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 182.27272727272728) internal successors, (2005), 11 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:15,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:15,763 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:15,763 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 780 flow. Second operand 11 states and 2005 transitions. [2023-09-01 00:00:15,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 146 transitions, 1392 flow [2023-09-01 00:00:15,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 146 transitions, 1388 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:00:15,770 INFO L231 Difference]: Finished difference. Result has 105 places, 112 transitions, 1137 flow [2023-09-01 00:00:15,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1137, PETRI_PLACES=105, PETRI_TRANSITIONS=112} [2023-09-01 00:00:15,770 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 19 predicate places. [2023-09-01 00:00:15,770 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 112 transitions, 1137 flow [2023-09-01 00:00:15,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:15,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:15,771 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] [2023-09-01 00:00:15,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-09-01 00:00:15,971 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 [2023-09-01 00:00:15,971 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-09-01 00:00:15,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:15,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1140300478, now seen corresponding path program 6 times [2023-09-01 00:00:15,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:15,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082895880] [2023-09-01 00:00:15,972 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 00:00:15,973 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 [2023-09-01 00:00:15,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:15,973 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) [2023-09-01 00:00:15,975 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 [2023-09-01 00:00:16,454 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 00:00:16,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 00:00:16,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 64 conjunts are in the unsatisfiable core [2023-09-01 00:00:16,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:16,512 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 00:00:16,513 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 [2023-09-01 00:00:16,522 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 [2023-09-01 00:00:16,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:16,529 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 [2023-09-01 00:00:16,715 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 [2023-09-01 00:00:16,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2023-09-01 00:00:16,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:16,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:16,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:16,865 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:00:16,865 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:00:16,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 65 [2023-09-01 00:00:17,054 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:00:17,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2023-09-01 00:00:17,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 110 [2023-09-01 00:00:17,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 118 [2023-09-01 00:00:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:19,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:19,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:19,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082895880] [2023-09-01 00:00:19,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082895880] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:19,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:19,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 00:00:19,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529877068] [2023-09-01 00:00:19,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:19,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 00:00:19,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:19,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 00:00:19,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-09-01 00:00:24,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:00:27,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:00:32,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 463 [2023-09-01 00:00:32,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 112 transitions, 1137 flow. Second operand has 11 states, 11 states have (on average 177.9090909090909) internal successors, (1957), 11 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:32,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:32,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 463 [2023-09-01 00:00:32,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:41,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:00:42,065 INFO L130 PetriNetUnfolder]: 260/791 cut-off events. [2023-09-01 00:00:42,065 INFO L131 PetriNetUnfolder]: For 3058/3058 co-relation queries the response was YES. [2023-09-01 00:00:42,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3449 conditions, 791 events. 260/791 cut-off events. For 3058/3058 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5185 event pairs, 143 based on Foata normal form. 4/792 useless extension candidates. Maximal degree in co-relation 3419. Up to 613 conditions per place. [2023-09-01 00:00:42,070 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 132 selfloop transitions, 29 changer transitions 0/163 dead transitions. [2023-09-01 00:00:42,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 163 transitions, 1857 flow [2023-09-01 00:00:42,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 00:00:42,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 00:00:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2363 transitions. [2023-09-01 00:00:42,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39259013125103837 [2023-09-01 00:00:42,073 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2363 transitions. [2023-09-01 00:00:42,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2363 transitions. [2023-09-01 00:00:42,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:42,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2363 transitions. [2023-09-01 00:00:42,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 181.76923076923077) internal successors, (2363), 13 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:42,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:42,079 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:42,079 INFO L175 Difference]: Start difference. First operand has 105 places, 112 transitions, 1137 flow. Second operand 13 states and 2363 transitions. [2023-09-01 00:00:42,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 163 transitions, 1857 flow [2023-09-01 00:00:42,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 163 transitions, 1795 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-09-01 00:00:42,091 INFO L231 Difference]: Finished difference. Result has 125 places, 135 transitions, 1485 flow [2023-09-01 00:00:42,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1485, PETRI_PLACES=125, PETRI_TRANSITIONS=135} [2023-09-01 00:00:42,091 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 39 predicate places. [2023-09-01 00:00:42,092 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 135 transitions, 1485 flow [2023-09-01 00:00:42,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 177.9090909090909) internal successors, (1957), 11 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:42,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:42,092 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] [2023-09-01 00:00:42,106 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 (33)] Ended with exit code 0 [2023-09-01 00:00:42,292 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 [2023-09-01 00:00:42,293 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)] === [2023-09-01 00:00:42,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:42,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1631537234, now seen corresponding path program 7 times [2023-09-01 00:00:42,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:42,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504462684] [2023-09-01 00:00:42,294 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 00:00:42,294 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 [2023-09-01 00:00:42,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:42,295 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) [2023-09-01 00:00:42,296 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 [2023-09-01 00:00:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:00:42,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 00:00:42,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:42,931 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 [2023-09-01 00:00:42,949 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:00:42,950 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 [2023-09-01 00:00:43,001 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-09-01 00:00:43,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-09-01 00:00:43,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:43,134 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 [2023-09-01 00:00:43,433 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 [2023-09-01 00:00:43,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:43,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:43,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:43,648 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:00:43,648 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:00:43,651 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 [2023-09-01 00:00:43,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 00:00:43,929 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 [2023-09-01 00:00:44,047 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:00:44,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 215 [2023-09-01 00:00:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:44,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:44,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:44,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504462684] [2023-09-01 00:00:44,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504462684] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:44,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:44,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 00:00:44,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495956099] [2023-09-01 00:00:44,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:44,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 00:00:44,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 00:00:44,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-09-01 00:00:47,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-09-01 00:00:47,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 135 transitions, 1485 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:47,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:47,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-09-01 00:00:47,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:00:52,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 00:00:54,967 INFO L130 PetriNetUnfolder]: 257/786 cut-off events. [2023-09-01 00:00:54,967 INFO L131 PetriNetUnfolder]: For 3488/3488 co-relation queries the response was YES. [2023-09-01 00:00:54,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3615 conditions, 786 events. 257/786 cut-off events. For 3488/3488 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5176 event pairs, 153 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 3574. Up to 663 conditions per place. [2023-09-01 00:00:54,971 INFO L137 encePairwiseOnDemand]: 449/463 looper letters, 138 selfloop transitions, 22 changer transitions 0/162 dead transitions. [2023-09-01 00:00:54,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 162 transitions, 1965 flow [2023-09-01 00:00:54,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 00:00:54,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 00:00:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1989 transitions. [2023-09-01 00:00:54,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3905360298448851 [2023-09-01 00:00:54,974 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1989 transitions. [2023-09-01 00:00:54,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1989 transitions. [2023-09-01 00:00:54,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:00:54,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1989 transitions. [2023-09-01 00:00:54,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 180.8181818181818) internal successors, (1989), 11 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:54,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:54,981 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:54,981 INFO L175 Difference]: Start difference. First operand has 125 places, 135 transitions, 1485 flow. Second operand 11 states and 1989 transitions. [2023-09-01 00:00:54,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 162 transitions, 1965 flow [2023-09-01 00:00:54,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 162 transitions, 1901 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-09-01 00:00:54,995 INFO L231 Difference]: Finished difference. Result has 139 places, 140 transitions, 1551 flow [2023-09-01 00:00:54,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1551, PETRI_PLACES=139, PETRI_TRANSITIONS=140} [2023-09-01 00:00:54,996 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 53 predicate places. [2023-09-01 00:00:54,996 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 140 transitions, 1551 flow [2023-09-01 00:00:54,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:00:54,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:00:54,997 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] [2023-09-01 00:00:55,012 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 [2023-09-01 00:00:55,197 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 [2023-09-01 00:00:55,197 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)] === [2023-09-01 00:00:55,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:00:55,198 INFO L85 PathProgramCache]: Analyzing trace with hash 403770754, now seen corresponding path program 8 times [2023-09-01 00:00:55,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:00:55,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402233457] [2023-09-01 00:00:55,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 00:00:55,199 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 [2023-09-01 00:00:55,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:00:55,200 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) [2023-09-01 00:00:55,204 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 [2023-09-01 00:00:55,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 00:00:55,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 00:00:55,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 00:00:55,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:00:55,878 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 [2023-09-01 00:00:55,896 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:00:55,896 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 [2023-09-01 00:00:55,954 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-09-01 00:00:55,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-09-01 00:00:56,199 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 [2023-09-01 00:00:56,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:56,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:56,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:56,415 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:00:56,416 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:00:56,417 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 [2023-09-01 00:00:56,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:00:56,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 00:00:56,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 00:00:56,999 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 [2023-09-01 00:00:57,100 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:00:57,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 215 [2023-09-01 00:00:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:00:57,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:00:57,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:00:57,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402233457] [2023-09-01 00:00:57,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402233457] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:00:57,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:00:57,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 00:00:57,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097448177] [2023-09-01 00:00:57,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:00:57,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 00:00:57,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:00:57,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 00:00:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-09-01 00:01:01,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-09-01 00:01:01,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 140 transitions, 1551 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:01,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:01:01,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-09-01 00:01:01,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:01:08,287 INFO L130 PetriNetUnfolder]: 257/792 cut-off events. [2023-09-01 00:01:08,287 INFO L131 PetriNetUnfolder]: For 3519/3519 co-relation queries the response was YES. [2023-09-01 00:01:08,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3628 conditions, 792 events. 257/792 cut-off events. For 3519/3519 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5259 event pairs, 71 based on Foata normal form. 2/794 useless extension candidates. Maximal degree in co-relation 3582. Up to 364 conditions per place. [2023-09-01 00:01:08,292 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 101 selfloop transitions, 75 changer transitions 0/178 dead transitions. [2023-09-01 00:01:08,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 178 transitions, 2142 flow [2023-09-01 00:01:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 00:01:08,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 00:01:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2004 transitions. [2023-09-01 00:01:08,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3934812487728254 [2023-09-01 00:01:08,295 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2004 transitions. [2023-09-01 00:01:08,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2004 transitions. [2023-09-01 00:01:08,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:01:08,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2004 transitions. [2023-09-01 00:01:08,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 182.1818181818182) internal successors, (2004), 11 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:08,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:08,301 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 463.0) internal successors, (5556), 12 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:08,302 INFO L175 Difference]: Start difference. First operand has 139 places, 140 transitions, 1551 flow. Second operand 11 states and 2004 transitions. [2023-09-01 00:01:08,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 178 transitions, 2142 flow [2023-09-01 00:01:08,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 178 transitions, 1996 flow, removed 30 selfloop flow, removed 6 redundant places. [2023-09-01 00:01:08,325 INFO L231 Difference]: Finished difference. Result has 148 places, 148 transitions, 1772 flow [2023-09-01 00:01:08,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1772, PETRI_PLACES=148, PETRI_TRANSITIONS=148} [2023-09-01 00:01:08,326 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 62 predicate places. [2023-09-01 00:01:08,326 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 148 transitions, 1772 flow [2023-09-01 00:01:08,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:08,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:01:08,326 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] [2023-09-01 00:01:08,348 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 (35)] Ended with exit code 0 [2023-09-01 00:01:08,542 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 [2023-09-01 00:01:08,543 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)] === [2023-09-01 00:01:08,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:01:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1334699784, now seen corresponding path program 9 times [2023-09-01 00:01:08,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:01:08,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73604649] [2023-09-01 00:01:08,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 00:01:08,544 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 [2023-09-01 00:01:08,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:01:08,545 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) [2023-09-01 00:01:08,546 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 [2023-09-01 00:01:09,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 00:01:09,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 00:01:09,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 66 conjunts are in the unsatisfiable core [2023-09-01 00:01:09,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:01:09,203 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-09-01 00:01:09,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-09-01 00:01:09,220 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 [2023-09-01 00:01:09,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:01:09,229 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 [2023-09-01 00:01:09,599 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 [2023-09-01 00:01:09,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:01:09,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:01:09,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:01:09,784 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:01:09,784 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:01:09,785 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 [2023-09-01 00:01:09,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:01:09,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 00:01:10,136 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:01:10,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2023-09-01 00:01:10,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 110 [2023-09-01 00:01:10,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 118 [2023-09-01 00:01:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:01:13,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:01:13,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:01:13,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73604649] [2023-09-01 00:01:13,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73604649] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:01:13,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:01:13,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 00:01:13,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213967329] [2023-09-01 00:01:13,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:01:13,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 00:01:13,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:01:13,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 00:01:13,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-09-01 00:01:15,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:01:16,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:01:22,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:01:26,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:01:29,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:01:33,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:01:35,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:01:40,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:01:41,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:01:46,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 463 [2023-09-01 00:01:46,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 148 transitions, 1772 flow. Second operand has 12 states, 12 states have (on average 175.75) internal successors, (2109), 12 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:46,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:01:46,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 463 [2023-09-01 00:01:46,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:01:55,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:01:56,943 INFO L130 PetriNetUnfolder]: 269/841 cut-off events. [2023-09-01 00:01:56,944 INFO L131 PetriNetUnfolder]: For 4773/4773 co-relation queries the response was YES. [2023-09-01 00:01:56,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4035 conditions, 841 events. 269/841 cut-off events. For 4773/4773 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5721 event pairs, 56 based on Foata normal form. 4/845 useless extension candidates. Maximal degree in co-relation 3987. Up to 306 conditions per place. [2023-09-01 00:01:56,948 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 107 selfloop transitions, 81 changer transitions 0/190 dead transitions. [2023-09-01 00:01:56,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 190 transitions, 2433 flow [2023-09-01 00:01:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 00:01:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 00:01:56,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2172 transitions. [2023-09-01 00:01:56,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39092872570194387 [2023-09-01 00:01:56,951 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2172 transitions. [2023-09-01 00:01:56,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2172 transitions. [2023-09-01 00:01:56,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:01:56,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2172 transitions. [2023-09-01 00:01:56,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 181.0) internal successors, (2172), 12 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:56,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:56,958 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:56,958 INFO L175 Difference]: Start difference. First operand has 148 places, 148 transitions, 1772 flow. Second operand 12 states and 2172 transitions. [2023-09-01 00:01:56,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 190 transitions, 2433 flow [2023-09-01 00:01:56,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 190 transitions, 2335 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-09-01 00:01:56,985 INFO L231 Difference]: Finished difference. Result has 156 places, 155 transitions, 2010 flow [2023-09-01 00:01:56,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2010, PETRI_PLACES=156, PETRI_TRANSITIONS=155} [2023-09-01 00:01:56,986 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 70 predicate places. [2023-09-01 00:01:56,986 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 155 transitions, 2010 flow [2023-09-01 00:01:56,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 175.75) internal successors, (2109), 12 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:01:56,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:01:56,987 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] [2023-09-01 00:01:57,004 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 (36)] Ended with exit code 0 [2023-09-01 00:01:57,201 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 [2023-09-01 00:01:57,201 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)] === [2023-09-01 00:01:57,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:01:57,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1584952404, now seen corresponding path program 10 times [2023-09-01 00:01:57,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:01:57,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726031850] [2023-09-01 00:01:57,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 00:01:57,202 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 [2023-09-01 00:01:57,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:01:57,203 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) [2023-09-01 00:01:57,204 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 [2023-09-01 00:01:57,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 00:01:57,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 00:01:57,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 67 conjunts are in the unsatisfiable core [2023-09-01 00:01:57,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:01:57,786 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 [2023-09-01 00:01:57,804 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:01:57,804 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 [2023-09-01 00:01:57,868 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-09-01 00:01:57,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-09-01 00:01:58,142 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 [2023-09-01 00:01:58,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:01:58,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:01:58,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:01:58,318 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:01:58,319 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:01:58,320 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 [2023-09-01 00:01:58,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:01:58,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-09-01 00:01:58,657 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:01:58,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2023-09-01 00:01:58,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 110 [2023-09-01 00:01:58,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 118 [2023-09-01 00:02:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:02:01,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:02:01,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:02:01,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726031850] [2023-09-01 00:02:01,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726031850] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:02:01,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:02:01,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 00:02:01,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142359879] [2023-09-01 00:02:01,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:02:01,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 00:02:01,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:02:01,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 00:02:01,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-09-01 00:02:04,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:02:06,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:02:16,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:02:21,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-09-01 00:02:21,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 155 transitions, 2010 flow. Second operand has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:02:21,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:02:21,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-09-01 00:02:21,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:02:30,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 00:02:31,051 INFO L130 PetriNetUnfolder]: 267/841 cut-off events. [2023-09-01 00:02:31,051 INFO L131 PetriNetUnfolder]: For 5594/5594 co-relation queries the response was YES. [2023-09-01 00:02:31,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4242 conditions, 841 events. 267/841 cut-off events. For 5594/5594 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5761 event pairs, 32 based on Foata normal form. 2/843 useless extension candidates. Maximal degree in co-relation 4192. Up to 225 conditions per place. [2023-09-01 00:02:31,055 INFO L137 encePairwiseOnDemand]: 450/463 looper letters, 96 selfloop transitions, 89 changer transitions 0/187 dead transitions. [2023-09-01 00:02:31,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 187 transitions, 2525 flow [2023-09-01 00:02:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 00:02:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 00:02:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2359 transitions. [2023-09-01 00:02:31,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3919255690314006 [2023-09-01 00:02:31,060 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2359 transitions. [2023-09-01 00:02:31,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2359 transitions. [2023-09-01 00:02:31,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:02:31,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2359 transitions. [2023-09-01 00:02:31,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 181.46153846153845) internal successors, (2359), 13 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:02:31,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:02:31,068 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 463.0) internal successors, (6482), 14 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:02:31,068 INFO L175 Difference]: Start difference. First operand has 156 places, 155 transitions, 2010 flow. Second operand 13 states and 2359 transitions. [2023-09-01 00:02:31,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 187 transitions, 2525 flow [2023-09-01 00:02:31,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 187 transitions, 2385 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-09-01 00:02:31,097 INFO L231 Difference]: Finished difference. Result has 161 places, 154 transitions, 2063 flow [2023-09-01 00:02:31,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2063, PETRI_PLACES=161, PETRI_TRANSITIONS=154} [2023-09-01 00:02:31,098 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 75 predicate places. [2023-09-01 00:02:31,099 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 154 transitions, 2063 flow [2023-09-01 00:02:31,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.75) internal successors, (2121), 12 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:02:31,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:02:31,100 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] [2023-09-01 00:02:31,117 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 [2023-09-01 00:02:31,315 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 [2023-09-01 00:02:31,315 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)] === [2023-09-01 00:02:31,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:02:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash -267465394, now seen corresponding path program 11 times [2023-09-01 00:02:31,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:02:31,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833746280] [2023-09-01 00:02:31,316 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 00:02:31,316 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 [2023-09-01 00:02:31,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:02:31,317 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) [2023-09-01 00:02:31,318 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 [2023-09-01 00:02:31,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 00:02:31,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 00:02:31,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 62 conjunts are in the unsatisfiable core [2023-09-01 00:02:31,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:02:32,016 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 [2023-09-01 00:02:32,032 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:02:32,032 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 [2023-09-01 00:02:32,069 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 00:02:32,069 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 [2023-09-01 00:02:32,263 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 [2023-09-01 00:02:32,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2023-09-01 00:02:32,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:02:32,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:02:32,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:02:32,453 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:02:32,453 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 00:02:32,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 65 [2023-09-01 00:02:32,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-09-01 00:02:32,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 58 Killed by 15