./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c -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 b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 04:56:26,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:56:26,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:56:26,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:56:26,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:56:26,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:56:26,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:56:26,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:56:26,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:56:26,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:56:26,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:56:26,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:56:26,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:56:26,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:56:26,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:56:26,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:56:26,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:56:26,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:56:26,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:56:26,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:56:26,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:56:26,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:56:26,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:56:26,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:56:26,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:56:26,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:56:26,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:56:26,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:56:26,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:56:26,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:56:26,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:56:26,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:56:26,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:56:26,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:56:26,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:56:26,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:56:26,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:56:26,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:56:26,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:56:26,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:56:26,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:56:26,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 04:56:26,393 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:56:26,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:56:26,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:56:26,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:56:26,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:56:26,396 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:56:26,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:56:26,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:56:26,397 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:56:26,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:56:26,398 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:56:26,398 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:56:26,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:56:26,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:56:26,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:56:26,399 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:56:26,399 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:56:26,399 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:56:26,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:56:26,399 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:56:26,399 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:56:26,400 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:56:26,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:56:26,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:56:26,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:56:26,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:56:26,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:56:26,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:56:26,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 04:56:26,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 04:56:26,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:56:26,402 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:56:26,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:56:26,402 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:56:26,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:56:26,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:56:26,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:56:26,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:56:26,742 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:56:26,743 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:56:26,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-08-30 04:56:28,028 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:56:28,225 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:56:28,225 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-08-30 04:56:28,231 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89bac0e2a/ead2388b9518405b9d48d319274d38a4/FLAGd7d89d38c [2023-08-30 04:56:28,246 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89bac0e2a/ead2388b9518405b9d48d319274d38a4 [2023-08-30 04:56:28,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:56:28,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:56:28,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:56:28,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:56:28,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:56:28,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:56:28" (1/1) ... [2023-08-30 04:56:28,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d443f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:28, skipping insertion in model container [2023-08-30 04:56:28,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:56:28" (1/1) ... [2023-08-30 04:56:28,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:56:28,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:56:28,428 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2023-08-30 04:56:28,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:56:28,446 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-30 04:56:28,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@319850f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:28, skipping insertion in model container [2023-08-30 04:56:28,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:56:28,447 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 04:56:28,449 INFO L158 Benchmark]: Toolchain (without parser) took 199.36ms. Allocated memory is still 79.7MB. Free memory was 57.7MB in the beginning and 47.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 04:56:28,449 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 65.0MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 04:56:28,450 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.55ms. Allocated memory is still 79.7MB. Free memory was 57.5MB in the beginning and 47.6MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 04:56:28,451 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 65.0MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.55ms. Allocated memory is still 79.7MB. Free memory was 57.5MB in the beginning and 47.6MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 119]: 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/weaver/chl-chromosome-subst.wvr.c -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 b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 04:56:30,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:56:30,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:56:30,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:56:30,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:56:30,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:56:30,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:56:30,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:56:30,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:56:30,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:56:30,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:56:30,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:56:30,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:56:30,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:56:30,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:56:30,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:56:30,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:56:30,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:56:30,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:56:30,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:56:30,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:56:30,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:56:30,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:56:30,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:56:30,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:56:30,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:56:30,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:56:30,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:56:30,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:56:30,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:56:30,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:56:30,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:56:30,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:56:30,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:56:30,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:56:30,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:56:30,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:56:30,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:56:30,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:56:30,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:56:30,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:56:30,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 04:56:30,306 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:56:30,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:56:30,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:56:30,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:56:30,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:56:30,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:56:30,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:56:30,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:56:30,309 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:56:30,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:56:30,310 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:56:30,311 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:56:30,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:56:30,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:56:30,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:56:30,311 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:56:30,312 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:56:30,312 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:56:30,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:56:30,312 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:56:30,312 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 04:56:30,313 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 04:56:30,313 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:56:30,313 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:56:30,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:56:30,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:56:30,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:56:30,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:56:30,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:56:30,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:56:30,314 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 04:56:30,315 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 04:56:30,315 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:56:30,315 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:56:30,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:56:30,315 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 04:56:30,316 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:56:30,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:56:30,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:56:30,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:56:30,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:56:30,639 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:56:30,639 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:56:30,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-08-30 04:56:31,673 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:56:31,894 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:56:31,895 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-08-30 04:56:31,902 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba4feac0e/315fb5657d34406e8e658493d480ae7d/FLAGd740f7f1c [2023-08-30 04:56:31,914 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba4feac0e/315fb5657d34406e8e658493d480ae7d [2023-08-30 04:56:31,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:56:31,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:56:31,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:56:31,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:56:31,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:56:31,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:56:31" (1/1) ... [2023-08-30 04:56:31,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544efa23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:31, skipping insertion in model container [2023-08-30 04:56:31,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:56:31" (1/1) ... [2023-08-30 04:56:31,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:56:31,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:56:32,153 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2023-08-30 04:56:32,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:56:32,191 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 04:56:32,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:56:32,228 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2023-08-30 04:56:32,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:56:32,242 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 04:56:32,274 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2023-08-30 04:56:32,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:56:32,300 INFO L208 MainTranslator]: Completed translation [2023-08-30 04:56:32,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:32 WrapperNode [2023-08-30 04:56:32,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:56:32,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 04:56:32,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 04:56:32,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 04:56:32,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:32" (1/1) ... [2023-08-30 04:56:32,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:32" (1/1) ... [2023-08-30 04:56:32,374 INFO L138 Inliner]: procedures = 28, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 275 [2023-08-30 04:56:32,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 04:56:32,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 04:56:32,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 04:56:32,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 04:56:32,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:32" (1/1) ... [2023-08-30 04:56:32,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:32" (1/1) ... [2023-08-30 04:56:32,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:32" (1/1) ... [2023-08-30 04:56:32,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:32" (1/1) ... [2023-08-30 04:56:32,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:32" (1/1) ... [2023-08-30 04:56:32,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:32" (1/1) ... [2023-08-30 04:56:32,442 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:32" (1/1) ... [2023-08-30 04:56:32,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:32" (1/1) ... [2023-08-30 04:56:32,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 04:56:32,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 04:56:32,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 04:56:32,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 04:56:32,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:32" (1/1) ... [2023-08-30 04:56:32,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:56:32,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:56:32,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 04:56:32,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 04:56:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 04:56:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 04:56:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 04:56:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 04:56:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 04:56:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 04:56:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 04:56:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 04:56:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 04:56:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 04:56:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 04:56:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 04:56:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 04:56:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 04:56:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 04:56:32,549 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 04:56:32,709 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 04:56:32,711 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 04:56:33,339 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 04:56:33,349 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 04:56:33,349 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 04:56:33,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:56:33 BoogieIcfgContainer [2023-08-30 04:56:33,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 04:56:33,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 04:56:33,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 04:56:33,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 04:56:33,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:56:31" (1/3) ... [2023-08-30 04:56:33,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4648b942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:56:33, skipping insertion in model container [2023-08-30 04:56:33,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:32" (2/3) ... [2023-08-30 04:56:33,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4648b942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:56:33, skipping insertion in model container [2023-08-30 04:56:33,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:56:33" (3/3) ... [2023-08-30 04:56:33,374 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2023-08-30 04:56:33,389 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 04:56:33,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-30 04:56:33,390 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 04:56:33,568 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 04:56:33,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 352 transitions, 728 flow [2023-08-30 04:56:33,751 INFO L130 PetriNetUnfolder]: 29/349 cut-off events. [2023-08-30 04:56:33,751 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 04:56:33,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 349 events. 29/349 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 661 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 260. Up to 2 conditions per place. [2023-08-30 04:56:33,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 352 transitions, 728 flow [2023-08-30 04:56:33,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 326 places, 345 transitions, 708 flow [2023-08-30 04:56:33,785 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:56:33,798 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 326 places, 345 transitions, 708 flow [2023-08-30 04:56:33,802 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 326 places, 345 transitions, 708 flow [2023-08-30 04:56:33,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 345 transitions, 708 flow [2023-08-30 04:56:33,887 INFO L130 PetriNetUnfolder]: 29/345 cut-off events. [2023-08-30 04:56:33,887 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 04:56:33,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 345 events. 29/345 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 658 event pairs, 0 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 260. Up to 2 conditions per place. [2023-08-30 04:56:33,902 INFO L119 LiptonReduction]: Number of co-enabled transitions 19008 [2023-08-30 04:56:57,670 INFO L134 LiptonReduction]: Checked pairs total: 20570 [2023-08-30 04:56:57,671 INFO L136 LiptonReduction]: Total number of compositions: 406 [2023-08-30 04:56:57,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:56:57,696 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;@712d56d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:56:57,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2023-08-30 04:56:57,699 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 04:56:57,700 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:56:57,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:56:57,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 04:56:57,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:56:57,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:56:57,707 INFO L85 PathProgramCache]: Analyzing trace with hash 45090, now seen corresponding path program 1 times [2023-08-30 04:56:57,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:56:57,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060896557] [2023-08-30 04:56:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:56:57,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:56:57,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:56:57,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:56:57,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-30 04:56:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:56:57,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 04:56:57,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:56:58,046 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 04:56:58,047 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 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 04:56:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:56:58,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:56:58,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:56:58,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060896557] [2023-08-30 04:56:58,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060896557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:56:58,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:56:58,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:56:58,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718559315] [2023-08-30 04:56:58,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:56:58,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:56:58,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:56:58,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:56:58,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:56:58,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 758 [2023-08-30 04:56:58,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:56:58,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:56:58,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 758 [2023-08-30 04:56:58,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:00,621 INFO L130 PetriNetUnfolder]: 11903/16592 cut-off events. [2023-08-30 04:57:00,621 INFO L131 PetriNetUnfolder]: For 398/398 co-relation queries the response was YES. [2023-08-30 04:57:00,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33609 conditions, 16592 events. 11903/16592 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 92150 event pairs, 10226 based on Foata normal form. 0/5881 useless extension candidates. Maximal degree in co-relation 15248. Up to 8299 conditions per place. [2023-08-30 04:57:00,718 INFO L137 encePairwiseOnDemand]: 748/758 looper letters, 110 selfloop transitions, 6 changer transitions 0/116 dead transitions. [2023-08-30 04:57:00,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 116 transitions, 500 flow [2023-08-30 04:57:00,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:57:00,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:57:00,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1033 transitions. [2023-08-30 04:57:00,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542656112576957 [2023-08-30 04:57:00,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1033 transitions. [2023-08-30 04:57:00,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1033 transitions. [2023-08-30 04:57:00,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:00,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1033 transitions. [2023-08-30 04:57:00,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.3333333333333) internal successors, (1033), 3 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:00,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:00,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:00,759 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 140 flow. Second operand 3 states and 1033 transitions. [2023-08-30 04:57:00,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 116 transitions, 500 flow [2023-08-30 04:57:00,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 116 transitions, 476 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 04:57:00,778 INFO L231 Difference]: Finished difference. Result has 62 places, 65 transitions, 176 flow [2023-08-30 04:57:00,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=62, PETRI_TRANSITIONS=65} [2023-08-30 04:57:00,783 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2023-08-30 04:57:00,784 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 176 flow [2023-08-30 04:57:00,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:00,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:00,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 04:57:00,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:00,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:00,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:00,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:01,000 INFO L85 PathProgramCache]: Analyzing trace with hash 45091, now seen corresponding path program 1 times [2023-08-30 04:57:01,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:01,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749700370] [2023-08-30 04:57:01,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:01,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:01,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:01,002 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:01,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-30 04:57:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:01,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 04:57:01,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:01,133 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 04:57:01,133 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 04:57:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:57:01,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:57:01,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:01,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749700370] [2023-08-30 04:57:01,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749700370] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:57:01,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:57:01,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:57:01,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79397306] [2023-08-30 04:57:01,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:57:01,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:57:01,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:01,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:57:01,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:57:01,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 758 [2023-08-30 04:57:01,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 65 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:01,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:01,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 758 [2023-08-30 04:57:01,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:03,194 INFO L130 PetriNetUnfolder]: 11903/16586 cut-off events. [2023-08-30 04:57:03,195 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 04:57:03,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33342 conditions, 16586 events. 11903/16586 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 92052 event pairs, 10226 based on Foata normal form. 4/5891 useless extension candidates. Maximal degree in co-relation 16651. Up to 16586 conditions per place. [2023-08-30 04:57:03,271 INFO L137 encePairwiseOnDemand]: 754/758 looper letters, 61 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 04:57:03,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 294 flow [2023-08-30 04:57:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:57:03,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:57:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2023-08-30 04:57:03,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4313984168865435 [2023-08-30 04:57:03,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2023-08-30 04:57:03,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2023-08-30 04:57:03,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:03,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2023-08-30 04:57:03,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:03,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:03,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:03,285 INFO L175 Difference]: Start difference. First operand has 62 places, 65 transitions, 176 flow. Second operand 3 states and 981 transitions. [2023-08-30 04:57:03,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 294 flow [2023-08-30 04:57:03,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:57:03,287 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 160 flow [2023-08-30 04:57:03,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-08-30 04:57:03,288 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -6 predicate places. [2023-08-30 04:57:03,289 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 160 flow [2023-08-30 04:57:03,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:03,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:03,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 04:57:03,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:03,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:03,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:03,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:03,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1402859, now seen corresponding path program 1 times [2023-08-30 04:57:03,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:03,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705454006] [2023-08-30 04:57:03,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:03,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:03,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:03,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:03,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-30 04:57:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:03,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 04:57:03,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:03,650 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 04:57:03,651 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 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 04:57:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:57:03,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:57:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:57:03,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:03,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705454006] [2023-08-30 04:57:03,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705454006] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:57:03,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:57:03,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 04:57:03,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457893707] [2023-08-30 04:57:03,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:57:03,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:57:03,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:03,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:57:03,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:57:04,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 758 [2023-08-30 04:57:04,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:04,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:04,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 758 [2023-08-30 04:57:04,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:10,207 INFO L130 PetriNetUnfolder]: 29756/41459 cut-off events. [2023-08-30 04:57:10,207 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-08-30 04:57:10,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83317 conditions, 41459 events. 29756/41459 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 2429. Compared 256637 event pairs, 25565 based on Foata normal form. 0/14706 useless extension candidates. Maximal degree in co-relation 83309. Up to 8297 conditions per place. [2023-08-30 04:57:10,429 INFO L137 encePairwiseOnDemand]: 749/758 looper letters, 248 selfloop transitions, 21 changer transitions 0/269 dead transitions. [2023-08-30 04:57:10,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 269 transitions, 1166 flow [2023-08-30 04:57:10,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 04:57:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 04:57:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2066 transitions. [2023-08-30 04:57:10,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542656112576957 [2023-08-30 04:57:10,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2066 transitions. [2023-08-30 04:57:10,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2066 transitions. [2023-08-30 04:57:10,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:10,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2066 transitions. [2023-08-30 04:57:10,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 344.3333333333333) internal successors, (2066), 6 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:10,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:10,452 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:10,452 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 160 flow. Second operand 6 states and 2066 transitions. [2023-08-30 04:57:10,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 269 transitions, 1166 flow [2023-08-30 04:57:10,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 269 transitions, 1165 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:57:10,459 INFO L231 Difference]: Finished difference. Result has 66 places, 77 transitions, 309 flow [2023-08-30 04:57:10,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=66, PETRI_TRANSITIONS=77} [2023-08-30 04:57:10,463 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 1 predicate places. [2023-08-30 04:57:10,463 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 77 transitions, 309 flow [2023-08-30 04:57:10,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:10,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:10,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 04:57:10,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:10,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:10,674 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:10,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:10,675 INFO L85 PathProgramCache]: Analyzing trace with hash 43552649, now seen corresponding path program 1 times [2023-08-30 04:57:10,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:10,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155329103] [2023-08-30 04:57:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:10,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:10,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:10,677 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:10,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-30 04:57:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:10,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 04:57:10,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:57:10,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:57:10,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:10,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155329103] [2023-08-30 04:57:10,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155329103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:57:10,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:57:10,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 04:57:10,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597056847] [2023-08-30 04:57:10,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:57:10,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:57:10,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:10,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:57:10,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:57:10,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 758 [2023-08-30 04:57:10,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 77 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:10,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:10,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 758 [2023-08-30 04:57:10,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:13,582 INFO L130 PetriNetUnfolder]: 23805/33171 cut-off events. [2023-08-30 04:57:13,582 INFO L131 PetriNetUnfolder]: For 163/163 co-relation queries the response was YES. [2023-08-30 04:57:13,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66717 conditions, 33171 events. 23805/33171 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 2210. Compared 200914 event pairs, 20452 based on Foata normal form. 3/11778 useless extension candidates. Maximal degree in co-relation 66705. Up to 33163 conditions per place. [2023-08-30 04:57:13,762 INFO L137 encePairwiseOnDemand]: 749/758 looper letters, 63 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2023-08-30 04:57:13,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 451 flow [2023-08-30 04:57:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:57:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:57:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 995 transitions. [2023-08-30 04:57:13,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43755496921723835 [2023-08-30 04:57:13,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 995 transitions. [2023-08-30 04:57:13,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 995 transitions. [2023-08-30 04:57:13,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:13,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 995 transitions. [2023-08-30 04:57:13,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:13,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:13,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:13,775 INFO L175 Difference]: Start difference. First operand has 66 places, 77 transitions, 309 flow. Second operand 3 states and 995 transitions. [2023-08-30 04:57:13,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 451 flow [2023-08-30 04:57:13,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 421 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 04:57:13,780 INFO L231 Difference]: Finished difference. Result has 68 places, 75 transitions, 313 flow [2023-08-30 04:57:13,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=68, PETRI_TRANSITIONS=75} [2023-08-30 04:57:13,781 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 3 predicate places. [2023-08-30 04:57:13,782 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 75 transitions, 313 flow [2023-08-30 04:57:13,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:13,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:13,783 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 04:57:13,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:13,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:13,992 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:13,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:13,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1152066974, now seen corresponding path program 2 times [2023-08-30 04:57:13,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:13,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473920341] [2023-08-30 04:57:13,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 04:57:13,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:13,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:13,994 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:13,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-30 04:57:14,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 04:57:14,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:57:14,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 04:57:14,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:14,170 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 04:57:14,170 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 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 04:57:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:57:14,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:57:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:57:14,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:14,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473920341] [2023-08-30 04:57:14,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473920341] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:57:14,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:57:14,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 04:57:14,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347561271] [2023-08-30 04:57:14,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:57:14,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 04:57:14,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:14,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 04:57:14,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-30 04:57:18,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 758 [2023-08-30 04:57:18,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 75 transitions, 313 flow. Second operand has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:18,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:18,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 758 [2023-08-30 04:57:18,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:22,854 INFO L130 PetriNetUnfolder]: 29756/41462 cut-off events. [2023-08-30 04:57:22,855 INFO L131 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2023-08-30 04:57:22,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83396 conditions, 41462 events. 29756/41462 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 1940. Compared 251523 event pairs, 25565 based on Foata normal form. 3/14725 useless extension candidates. Maximal degree in co-relation 83382. Up to 8296 conditions per place. [2023-08-30 04:57:23,090 INFO L137 encePairwiseOnDemand]: 749/758 looper letters, 246 selfloop transitions, 26 changer transitions 0/272 dead transitions. [2023-08-30 04:57:23,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 272 transitions, 1323 flow [2023-08-30 04:57:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 04:57:23,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 04:57:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2361 transitions. [2023-08-30 04:57:23,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44496796079909534 [2023-08-30 04:57:23,099 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2361 transitions. [2023-08-30 04:57:23,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2361 transitions. [2023-08-30 04:57:23,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:23,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2361 transitions. [2023-08-30 04:57:23,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 337.2857142857143) internal successors, (2361), 7 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:23,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 758.0) internal successors, (6064), 8 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:23,114 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 758.0) internal successors, (6064), 8 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:23,114 INFO L175 Difference]: Start difference. First operand has 68 places, 75 transitions, 313 flow. Second operand 7 states and 2361 transitions. [2023-08-30 04:57:23,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 272 transitions, 1323 flow [2023-08-30 04:57:23,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 272 transitions, 1295 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:57:23,121 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 391 flow [2023-08-30 04:57:23,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=391, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2023-08-30 04:57:23,122 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2023-08-30 04:57:23,123 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 391 flow [2023-08-30 04:57:23,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:23,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:23,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:57:23,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:23,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:23,333 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:23,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:23,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1300315920, now seen corresponding path program 1 times [2023-08-30 04:57:23,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:23,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651652986] [2023-08-30 04:57:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:23,334 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 [2023-08-30 04:57:23,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:23,335 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:23,336 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 (7)] Waiting until timeout for monitored process [2023-08-30 04:57:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:23,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 04:57:23,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:57:23,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:57:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 04:57:23,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:23,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651652986] [2023-08-30 04:57:23,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651652986] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:57:23,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:57:23,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-30 04:57:23,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740735977] [2023-08-30 04:57:23,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:57:23,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:57:23,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:23,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:57:23,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:57:23,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 758 [2023-08-30 04:57:23,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 391 flow. Second operand has 6 states, 6 states have (on average 305.6666666666667) internal successors, (1834), 6 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:23,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:23,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 758 [2023-08-30 04:57:23,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:25,531 INFO L130 PetriNetUnfolder]: 11903/16598 cut-off events. [2023-08-30 04:57:25,531 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2023-08-30 04:57:25,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33446 conditions, 16598 events. 11903/16598 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 92109 event pairs, 10226 based on Foata normal form. 9/5911 useless extension candidates. Maximal degree in co-relation 33431. Up to 16582 conditions per place. [2023-08-30 04:57:25,582 INFO L137 encePairwiseOnDemand]: 746/758 looper letters, 54 selfloop transitions, 20 changer transitions 0/74 dead transitions. [2023-08-30 04:57:25,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 485 flow [2023-08-30 04:57:25,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 04:57:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 04:57:25,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1908 transitions. [2023-08-30 04:57:25,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41952506596306066 [2023-08-30 04:57:25,588 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1908 transitions. [2023-08-30 04:57:25,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1908 transitions. [2023-08-30 04:57:25,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:25,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1908 transitions. [2023-08-30 04:57:25,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:25,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:25,600 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:25,600 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 391 flow. Second operand 6 states and 1908 transitions. [2023-08-30 04:57:25,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 485 flow [2023-08-30 04:57:25,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 74 transitions, 447 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 04:57:25,602 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 378 flow [2023-08-30 04:57:25,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-08-30 04:57:25,603 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2023-08-30 04:57:25,603 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 378 flow [2023-08-30 04:57:25,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.6666666666667) internal successors, (1834), 6 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:25,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:25,604 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1] [2023-08-30 04:57:25,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:25,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:25,814 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:25,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:25,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1354332757, now seen corresponding path program 3 times [2023-08-30 04:57:25,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:25,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568302817] [2023-08-30 04:57:25,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 04:57:25,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:25,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:25,816 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:25,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-30 04:57:25,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 04:57:25,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:57:25,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 04:57:25,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:57:26,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:57:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:57:26,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:26,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568302817] [2023-08-30 04:57:26,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568302817] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:57:26,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:57:26,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-08-30 04:57:26,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354363824] [2023-08-30 04:57:26,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:57:26,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 04:57:26,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:26,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 04:57:26,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-30 04:57:27,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 758 [2023-08-30 04:57:27,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 378 flow. Second operand has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:27,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:27,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 758 [2023-08-30 04:57:27,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:28,477 INFO L130 PetriNetUnfolder]: 5949/8304 cut-off events. [2023-08-30 04:57:28,477 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2023-08-30 04:57:28,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16771 conditions, 8304 events. 5949/8304 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 41414 event pairs, 5113 based on Foata normal form. 9/2965 useless extension candidates. Maximal degree in co-relation 16752. Up to 8289 conditions per place. [2023-08-30 04:57:28,513 INFO L137 encePairwiseOnDemand]: 746/758 looper letters, 48 selfloop transitions, 18 changer transitions 0/66 dead transitions. [2023-08-30 04:57:28,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 66 transitions, 421 flow [2023-08-30 04:57:28,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 04:57:28,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 04:57:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2509 transitions. [2023-08-30 04:57:28,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4137532981530343 [2023-08-30 04:57:28,519 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2509 transitions. [2023-08-30 04:57:28,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2509 transitions. [2023-08-30 04:57:28,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:28,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2509 transitions. [2023-08-30 04:57:28,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 313.625) internal successors, (2509), 8 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:28,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:28,533 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:28,533 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 378 flow. Second operand 8 states and 2509 transitions. [2023-08-30 04:57:28,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 66 transitions, 421 flow [2023-08-30 04:57:28,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 66 transitions, 355 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-30 04:57:28,536 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 271 flow [2023-08-30 04:57:28,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=271, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2023-08-30 04:57:28,536 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 6 predicate places. [2023-08-30 04:57:28,537 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 271 flow [2023-08-30 04:57:28,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:28,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:28,538 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1] [2023-08-30 04:57:28,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:28,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:28,748 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:28,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:28,748 INFO L85 PathProgramCache]: Analyzing trace with hash 488945264, now seen corresponding path program 2 times [2023-08-30 04:57:28,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:28,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889877395] [2023-08-30 04:57:28,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 04:57:28,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:28,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:28,750 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:28,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-30 04:57:28,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 04:57:28,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:57:28,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 04:57:28,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:28,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:28,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:28,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:28,958 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-30 04:57:28,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-08-30 04:57:28,996 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-30 04:57:28,997 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 44 treesize of output 45 [2023-08-30 04:57:29,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:29,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:57:29,232 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 04:57:29,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-08-30 04:57:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:57:29,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:57:29,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:29,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889877395] [2023-08-30 04:57:29,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889877395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:57:29,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:57:29,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:57:29,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495523103] [2023-08-30 04:57:29,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:57:29,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:57:29,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:29,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:57:29,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:57:29,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 758 [2023-08-30 04:57:29,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 313.4) internal successors, (1567), 5 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:29,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:29,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 758 [2023-08-30 04:57:29,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:30,702 INFO L130 PetriNetUnfolder]: 4605/6511 cut-off events. [2023-08-30 04:57:30,702 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 04:57:30,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13166 conditions, 6511 events. 4605/6511 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 31737 event pairs, 3945 based on Foata normal form. 0/2492 useless extension candidates. Maximal degree in co-relation 13152. Up to 6511 conditions per place. [2023-08-30 04:57:30,721 INFO L137 encePairwiseOnDemand]: 755/758 looper letters, 63 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-30 04:57:30,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 64 transitions, 385 flow [2023-08-30 04:57:30,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:57:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:57:30,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 990 transitions. [2023-08-30 04:57:30,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43535620052770446 [2023-08-30 04:57:30,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 990 transitions. [2023-08-30 04:57:30,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 990 transitions. [2023-08-30 04:57:30,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:30,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 990 transitions. [2023-08-30 04:57:30,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:30,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:30,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:30,729 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 271 flow. Second operand 3 states and 990 transitions. [2023-08-30 04:57:30,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 64 transitions, 385 flow [2023-08-30 04:57:30,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 348 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 04:57:30,730 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 222 flow [2023-08-30 04:57:30,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2023-08-30 04:57:30,731 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2023-08-30 04:57:30,731 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 222 flow [2023-08-30 04:57:30,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 313.4) internal successors, (1567), 5 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:30,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:30,732 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1] [2023-08-30 04:57:30,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:30,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:30,942 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:30,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:30,942 INFO L85 PathProgramCache]: Analyzing trace with hash 488945265, now seen corresponding path program 1 times [2023-08-30 04:57:30,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:30,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455516540] [2023-08-30 04:57:30,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:30,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:30,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:30,944 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:30,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-30 04:57:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:31,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 04:57:31,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:31,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:31,358 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2023-08-30 04:57:31,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2023-08-30 04:57:31,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:31,463 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 14 treesize of output 20 [2023-08-30 04:57:31,545 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-30 04:57:31,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-08-30 04:57:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:57:31,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:57:31,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:31,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455516540] [2023-08-30 04:57:31,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455516540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:57:31,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:57:31,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 04:57:31,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913085850] [2023-08-30 04:57:31,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:57:31,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:57:31,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:31,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:57:31,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:57:31,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 758 [2023-08-30 04:57:31,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 315.75) internal successors, (1263), 4 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:31,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:31,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 758 [2023-08-30 04:57:31,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:32,281 INFO L130 PetriNetUnfolder]: 3261/4718 cut-off events. [2023-08-30 04:57:32,281 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 04:57:32,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9557 conditions, 4718 events. 3261/4718 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 22496 event pairs, 2777 based on Foata normal form. 0/2028 useless extension candidates. Maximal degree in co-relation 9544. Up to 4718 conditions per place. [2023-08-30 04:57:32,295 INFO L137 encePairwiseOnDemand]: 755/758 looper letters, 61 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 04:57:32,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 332 flow [2023-08-30 04:57:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:57:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:57:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 994 transitions. [2023-08-30 04:57:32,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371152154793316 [2023-08-30 04:57:32,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 994 transitions. [2023-08-30 04:57:32,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 994 transitions. [2023-08-30 04:57:32,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:32,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 994 transitions. [2023-08-30 04:57:32,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:32,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:32,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:32,302 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 222 flow. Second operand 3 states and 994 transitions. [2023-08-30 04:57:32,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 332 flow [2023-08-30 04:57:32,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 62 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:57:32,304 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 209 flow [2023-08-30 04:57:32,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2023-08-30 04:57:32,305 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -2 predicate places. [2023-08-30 04:57:32,305 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 209 flow [2023-08-30 04:57:32,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.75) internal successors, (1263), 4 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:32,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:32,306 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-08-30 04:57:32,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:32,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:32,517 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:32,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:32,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1724996868, now seen corresponding path program 1 times [2023-08-30 04:57:32,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:32,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806367602] [2023-08-30 04:57:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:32,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:32,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:32,519 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:32,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-30 04:57:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:32,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 04:57:32,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:32,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:32,909 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2023-08-30 04:57:32,910 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 4 case distinctions, treesize of input 29 treesize of output 48 [2023-08-30 04:57:33,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:33,021 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 14 treesize of output 20 [2023-08-30 04:57:33,101 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-30 04:57:33,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-08-30 04:57:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:57:33,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:57:33,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:33,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806367602] [2023-08-30 04:57:33,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806367602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:57:33,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:57:33,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 04:57:33,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374240061] [2023-08-30 04:57:33,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:57:33,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:57:33,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:33,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:57:33,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:57:33,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 758 [2023-08-30 04:57:33,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 316.25) internal successors, (1265), 4 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:33,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:33,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 758 [2023-08-30 04:57:33,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:34,003 INFO L130 PetriNetUnfolder]: 3141/4534 cut-off events. [2023-08-30 04:57:34,003 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 04:57:34,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9190 conditions, 4534 events. 3141/4534 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 21473 event pairs, 2673 based on Foata normal form. 0/1988 useless extension candidates. Maximal degree in co-relation 9176. Up to 4534 conditions per place. [2023-08-30 04:57:34,027 INFO L137 encePairwiseOnDemand]: 755/758 looper letters, 59 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-08-30 04:57:34,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 325 flow [2023-08-30 04:57:34,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:57:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:57:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 992 transitions. [2023-08-30 04:57:34,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436235708003518 [2023-08-30 04:57:34,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 992 transitions. [2023-08-30 04:57:34,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 992 transitions. [2023-08-30 04:57:34,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:34,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 992 transitions. [2023-08-30 04:57:34,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:34,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:34,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:34,036 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 209 flow. Second operand 3 states and 992 transitions. [2023-08-30 04:57:34,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 325 flow [2023-08-30 04:57:34,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:57:34,039 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 206 flow [2023-08-30 04:57:34,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-08-30 04:57:34,042 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2023-08-30 04:57:34,042 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 206 flow [2023-08-30 04:57:34,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.25) internal successors, (1265), 4 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:34,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:34,043 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-08-30 04:57:34,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:34,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:34,252 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:34,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:34,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1724996870, now seen corresponding path program 1 times [2023-08-30 04:57:34,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:34,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774623292] [2023-08-30 04:57:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:34,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:34,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:34,253 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:34,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-30 04:57:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:34,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 04:57:34,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:34,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:34,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:34,639 INFO L321 Elim1Store]: treesize reduction 49, result has 33.8 percent of original size [2023-08-30 04:57:34,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 35 [2023-08-30 04:57:34,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2023-08-30 04:57:34,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:34,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:57:34,952 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 04:57:34,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-08-30 04:57:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:57:35,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:57:35,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:35,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774623292] [2023-08-30 04:57:35,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774623292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:57:35,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:57:35,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:57:35,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074927483] [2023-08-30 04:57:35,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:57:35,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:57:35,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:35,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:57:35,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:57:35,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 758 [2023-08-30 04:57:35,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:35,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:35,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 758 [2023-08-30 04:57:35,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:36,153 INFO L130 PetriNetUnfolder]: 3021/4350 cut-off events. [2023-08-30 04:57:36,153 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 04:57:36,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8823 conditions, 4350 events. 3021/4350 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 20468 event pairs, 2569 based on Foata normal form. 0/1948 useless extension candidates. Maximal degree in co-relation 8808. Up to 4350 conditions per place. [2023-08-30 04:57:36,167 INFO L137 encePairwiseOnDemand]: 755/758 looper letters, 57 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-30 04:57:36,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 318 flow [2023-08-30 04:57:36,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:57:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:57:36,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 984 transitions. [2023-08-30 04:57:36,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43271767810026385 [2023-08-30 04:57:36,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 984 transitions. [2023-08-30 04:57:36,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 984 transitions. [2023-08-30 04:57:36,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:36,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 984 transitions. [2023-08-30 04:57:36,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:36,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:36,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:36,174 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 206 flow. Second operand 3 states and 984 transitions. [2023-08-30 04:57:36,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 318 flow [2023-08-30 04:57:36,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:57:36,176 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 203 flow [2023-08-30 04:57:36,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-08-30 04:57:36,176 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-08-30 04:57:36,176 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 203 flow [2023-08-30 04:57:36,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:36,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:36,177 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:57:36,193 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 (12)] Ended with exit code 0 [2023-08-30 04:57:36,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:36,391 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:36,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:36,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1935297847, now seen corresponding path program 1 times [2023-08-30 04:57:36,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:36,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032046678] [2023-08-30 04:57:36,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:36,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:36,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:36,393 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:36,393 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 (13)] Waiting until timeout for monitored process [2023-08-30 04:57:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:36,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 04:57:36,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:36,808 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 04:57:36,808 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 04:57:36,846 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 04:57:36,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-30 04:57:36,878 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-30 04:57:36,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-08-30 04:57:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:57:36,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:57:36,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:36,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032046678] [2023-08-30 04:57:36,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032046678] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:57:36,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:57:36,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:57:36,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566096558] [2023-08-30 04:57:36,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:57:36,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:57:36,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:36,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:57:36,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:57:37,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 758 [2023-08-30 04:57:37,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 303.0) internal successors, (1515), 5 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:37,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:37,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 758 [2023-08-30 04:57:37,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:37,600 INFO L130 PetriNetUnfolder]: 2346/3389 cut-off events. [2023-08-30 04:57:37,600 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-30 04:57:37,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6886 conditions, 3389 events. 2346/3389 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 15216 event pairs, 1962 based on Foata normal form. 0/1625 useless extension candidates. Maximal degree in co-relation 6870. Up to 3383 conditions per place. [2023-08-30 04:57:37,615 INFO L137 encePairwiseOnDemand]: 754/758 looper letters, 54 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-30 04:57:37,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 311 flow [2023-08-30 04:57:37,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:57:37,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:57:37,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1250 transitions. [2023-08-30 04:57:37,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41226912928759896 [2023-08-30 04:57:37,620 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1250 transitions. [2023-08-30 04:57:37,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1250 transitions. [2023-08-30 04:57:37,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:37,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1250 transitions. [2023-08-30 04:57:37,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.5) internal successors, (1250), 4 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:37,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:37,624 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:37,625 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 203 flow. Second operand 4 states and 1250 transitions. [2023-08-30 04:57:37,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 311 flow [2023-08-30 04:57:37,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:57:37,626 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 202 flow [2023-08-30 04:57:37,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-08-30 04:57:37,627 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-08-30 04:57:37,627 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 202 flow [2023-08-30 04:57:37,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 303.0) internal successors, (1515), 5 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:37,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:37,628 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:57:37,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:37,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:37,843 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:37,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:37,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1935297910, now seen corresponding path program 1 times [2023-08-30 04:57:37,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:37,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329920118] [2023-08-30 04:57:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:37,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:37,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:37,844 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:37,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-08-30 04:57:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:38,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 04:57:38,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:38,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 04:57:38,201 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 04:57:38,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-30 04:57:38,223 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:57:38,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:57:38,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:38,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329920118] [2023-08-30 04:57:38,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329920118] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:57:38,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:57:38,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:57:38,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690592668] [2023-08-30 04:57:38,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:57:38,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:57:38,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:38,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:57:38,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:57:38,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 758 [2023-08-30 04:57:38,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 303.5) internal successors, (1214), 4 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:38,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:38,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 758 [2023-08-30 04:57:38,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:38,719 INFO L130 PetriNetUnfolder]: 1801/2614 cut-off events. [2023-08-30 04:57:38,719 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-30 04:57:38,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5330 conditions, 2614 events. 1801/2614 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 11152 event pairs, 1477 based on Foata normal form. 0/1336 useless extension candidates. Maximal degree in co-relation 5313. Up to 2602 conditions per place. [2023-08-30 04:57:38,727 INFO L137 encePairwiseOnDemand]: 754/758 looper letters, 52 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-30 04:57:38,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 306 flow [2023-08-30 04:57:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:57:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:57:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1248 transitions. [2023-08-30 04:57:38,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41160949868073876 [2023-08-30 04:57:38,730 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1248 transitions. [2023-08-30 04:57:38,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1248 transitions. [2023-08-30 04:57:38,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:38,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1248 transitions. [2023-08-30 04:57:38,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:38,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:38,735 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:38,735 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 202 flow. Second operand 4 states and 1248 transitions. [2023-08-30 04:57:38,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 306 flow [2023-08-30 04:57:38,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:57:38,737 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 199 flow [2023-08-30 04:57:38,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-08-30 04:57:38,737 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -5 predicate places. [2023-08-30 04:57:38,738 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 199 flow [2023-08-30 04:57:38,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 303.5) internal successors, (1214), 4 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:38,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:38,738 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:57:38,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:38,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:38,951 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:38,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1935297911, now seen corresponding path program 1 times [2023-08-30 04:57:38,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:38,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658705321] [2023-08-30 04:57:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:38,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:38,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:38,953 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:38,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-08-30 04:57:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:39,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 04:57:39,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:39,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 04:57:39,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 04:57:39,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:39,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:57:39,359 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 04:57:39,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 04:57:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:57:39,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:57:39,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:39,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658705321] [2023-08-30 04:57:39,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658705321] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:57:39,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:57:39,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 04:57:39,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756337440] [2023-08-30 04:57:39,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:57:39,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:57:39,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:57:39,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:57:39,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 758 [2023-08-30 04:57:39,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:39,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:39,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 758 [2023-08-30 04:57:39,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:40,453 INFO L130 PetriNetUnfolder]: 3065/4444 cut-off events. [2023-08-30 04:57:40,454 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-30 04:57:40,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9023 conditions, 4444 events. 3065/4444 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 22208 event pairs, 1477 based on Foata normal form. 0/2270 useless extension candidates. Maximal degree in co-relation 9006. Up to 2602 conditions per place. [2023-08-30 04:57:40,469 INFO L137 encePairwiseOnDemand]: 753/758 looper letters, 82 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-08-30 04:57:40,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 440 flow [2023-08-30 04:57:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:57:40,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:57:40,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1570 transitions. [2023-08-30 04:57:40,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41424802110817943 [2023-08-30 04:57:40,472 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1570 transitions. [2023-08-30 04:57:40,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1570 transitions. [2023-08-30 04:57:40,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:40,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1570 transitions. [2023-08-30 04:57:40,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:40,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:40,479 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:40,479 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 199 flow. Second operand 5 states and 1570 transitions. [2023-08-30 04:57:40,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 440 flow [2023-08-30 04:57:40,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 86 transitions, 437 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:57:40,481 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 212 flow [2023-08-30 04:57:40,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2023-08-30 04:57:40,482 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -2 predicate places. [2023-08-30 04:57:40,482 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 212 flow [2023-08-30 04:57:40,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:40,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:40,483 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:57:40,496 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 (15)] Ended with exit code 0 [2023-08-30 04:57:40,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:40,696 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:40,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:40,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1935297848, now seen corresponding path program 1 times [2023-08-30 04:57:40,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:40,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455359206] [2023-08-30 04:57:40,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:40,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:40,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:40,698 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:40,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-30 04:57:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:41,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 04:57:41,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:41,117 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 04:57:41,118 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 04:57:41,186 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 04:57:41,187 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 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 04:57:41,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:41,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:57:41,278 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 04:57:41,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 04:57:41,319 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 04:57:41,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:57:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:57:41,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:57:41,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:41,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455359206] [2023-08-30 04:57:41,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455359206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:57:41,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:57:41,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 04:57:41,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828749350] [2023-08-30 04:57:41,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:57:41,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:57:41,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:41,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:57:41,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:57:41,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 758 [2023-08-30 04:57:41,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 300.6666666666667) internal successors, (1804), 6 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:41,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:41,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 758 [2023-08-30 04:57:41,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:42,446 INFO L130 PetriNetUnfolder]: 2797/4062 cut-off events. [2023-08-30 04:57:42,446 INFO L131 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2023-08-30 04:57:42,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8823 conditions, 4062 events. 2797/4062 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 19865 event pairs, 1477 based on Foata normal form. 0/2250 useless extension candidates. Maximal degree in co-relation 8805. Up to 2608 conditions per place. [2023-08-30 04:57:42,468 INFO L137 encePairwiseOnDemand]: 753/758 looper letters, 81 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-08-30 04:57:42,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 85 transitions, 447 flow [2023-08-30 04:57:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:57:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:57:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1569 transitions. [2023-08-30 04:57:42,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4139841688654354 [2023-08-30 04:57:42,473 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1569 transitions. [2023-08-30 04:57:42,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1569 transitions. [2023-08-30 04:57:42,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:42,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1569 transitions. [2023-08-30 04:57:42,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:42,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:42,480 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:42,480 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 212 flow. Second operand 5 states and 1569 transitions. [2023-08-30 04:57:42,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 85 transitions, 447 flow [2023-08-30 04:57:42,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 85 transitions, 441 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 04:57:42,483 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 218 flow [2023-08-30 04:57:42,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2023-08-30 04:57:42,483 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 0 predicate places. [2023-08-30 04:57:42,483 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 218 flow [2023-08-30 04:57:42,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 300.6666666666667) internal successors, (1804), 6 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:42,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:42,484 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:57:42,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:42,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:42,699 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:42,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:42,699 INFO L85 PathProgramCache]: Analyzing trace with hash -135353714, now seen corresponding path program 1 times [2023-08-30 04:57:42,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:42,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715922810] [2023-08-30 04:57:42,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:42,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:42,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:42,701 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:42,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-30 04:57:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:43,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 04:57:43,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:43,099 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2023-08-30 04:57:43,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2023-08-30 04:57:43,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:43,154 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 14 treesize of output 20 [2023-08-30 04:57:43,225 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-30 04:57:43,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-08-30 04:57:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:57:43,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:57:43,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:43,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715922810] [2023-08-30 04:57:43,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715922810] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:57:43,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:57:43,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 04:57:43,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412723716] [2023-08-30 04:57:43,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:57:43,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:57:43,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:43,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:57:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:57:43,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 758 [2023-08-30 04:57:43,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 312.75) internal successors, (1251), 4 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:43,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:43,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 758 [2023-08-30 04:57:43,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:44,079 INFO L130 PetriNetUnfolder]: 2659/3849 cut-off events. [2023-08-30 04:57:44,079 INFO L131 PetriNetUnfolder]: For 1331/1331 co-relation queries the response was YES. [2023-08-30 04:57:44,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8684 conditions, 3849 events. 2659/3849 cut-off events. For 1331/1331 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 17505 event pairs, 2233 based on Foata normal form. 0/2284 useless extension candidates. Maximal degree in co-relation 8665. Up to 3849 conditions per place. [2023-08-30 04:57:44,093 INFO L137 encePairwiseOnDemand]: 755/758 looper letters, 52 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-08-30 04:57:44,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 53 transitions, 320 flow [2023-08-30 04:57:44,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:57:44,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:57:44,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 972 transitions. [2023-08-30 04:57:44,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42744063324538256 [2023-08-30 04:57:44,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 972 transitions. [2023-08-30 04:57:44,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 972 transitions. [2023-08-30 04:57:44,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:44,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 972 transitions. [2023-08-30 04:57:44,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:44,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:44,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:44,101 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 218 flow. Second operand 3 states and 972 transitions. [2023-08-30 04:57:44,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 53 transitions, 320 flow [2023-08-30 04:57:44,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 312 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 04:57:44,103 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 208 flow [2023-08-30 04:57:44,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-08-30 04:57:44,104 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-08-30 04:57:44,104 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 208 flow [2023-08-30 04:57:44,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 312.75) internal successors, (1251), 4 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:44,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:44,104 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:57:44,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:44,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:44,317 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:44,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:44,317 INFO L85 PathProgramCache]: Analyzing trace with hash -135353713, now seen corresponding path program 1 times [2023-08-30 04:57:44,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:44,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617184500] [2023-08-30 04:57:44,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:44,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:44,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:44,319 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:44,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-30 04:57:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:44,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 04:57:44,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:44,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:44,722 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2023-08-30 04:57:44,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2023-08-30 04:57:44,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 84 [2023-08-30 04:57:44,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:44,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:57:44,937 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 04:57:44,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-08-30 04:57:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:57:45,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:57:45,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:45,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617184500] [2023-08-30 04:57:45,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617184500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:57:45,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:57:45,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:57:45,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303293359] [2023-08-30 04:57:45,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:57:45,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:57:45,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:45,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:57:45,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:57:45,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 758 [2023-08-30 04:57:45,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 312.2) internal successors, (1561), 5 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:45,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:45,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 758 [2023-08-30 04:57:45,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:46,358 INFO L130 PetriNetUnfolder]: 2521/3636 cut-off events. [2023-08-30 04:57:46,358 INFO L131 PetriNetUnfolder]: For 749/749 co-relation queries the response was YES. [2023-08-30 04:57:46,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8001 conditions, 3636 events. 2521/3636 cut-off events. For 749/749 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 16365 event pairs, 2113 based on Foata normal form. 0/2204 useless extension candidates. Maximal degree in co-relation 7982. Up to 3636 conditions per place. [2023-08-30 04:57:46,374 INFO L137 encePairwiseOnDemand]: 755/758 looper letters, 50 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-30 04:57:46,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 306 flow [2023-08-30 04:57:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:57:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:57:46,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 970 transitions. [2023-08-30 04:57:46,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42656112576956906 [2023-08-30 04:57:46,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 970 transitions. [2023-08-30 04:57:46,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 970 transitions. [2023-08-30 04:57:46,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:46,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 970 transitions. [2023-08-30 04:57:46,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.3333333333333) internal successors, (970), 3 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:46,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:46,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:46,382 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 208 flow. Second operand 3 states and 970 transitions. [2023-08-30 04:57:46,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 306 flow [2023-08-30 04:57:46,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 51 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:57:46,384 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 205 flow [2023-08-30 04:57:46,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2023-08-30 04:57:46,385 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -5 predicate places. [2023-08-30 04:57:46,385 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 205 flow [2023-08-30 04:57:46,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 312.2) internal successors, (1561), 5 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:46,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:46,386 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:57:46,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:46,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:46,597 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:46,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:46,597 INFO L85 PathProgramCache]: Analyzing trace with hash 100495166, now seen corresponding path program 1 times [2023-08-30 04:57:46,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:46,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980559059] [2023-08-30 04:57:46,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:46,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:46,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:46,599 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:46,600 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 (19)] Waiting until timeout for monitored process [2023-08-30 04:57:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:46,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 04:57:46,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:46,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 04:57:47,035 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 04:57:47,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:57:47,130 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:57:47,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:57:47,482 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:57:47,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:47,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980559059] [2023-08-30 04:57:47,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980559059] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:57:47,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:57:47,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-08-30 04:57:47,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728270986] [2023-08-30 04:57:47,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:57:47,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 04:57:47,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:47,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 04:57:47,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 04:57:50,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 758 [2023-08-30 04:57:50,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 205 flow. Second operand has 10 states, 10 states have (on average 306.2) internal successors, (3062), 10 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:50,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:57:50,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 758 [2023-08-30 04:57:50,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:57:51,804 INFO L130 PetriNetUnfolder]: 5941/8550 cut-off events. [2023-08-30 04:57:51,804 INFO L131 PetriNetUnfolder]: For 502/502 co-relation queries the response was YES. [2023-08-30 04:57:51,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18526 conditions, 8550 events. 5941/8550 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 44651 event pairs, 1325 based on Foata normal form. 300/5438 useless extension candidates. Maximal degree in co-relation 18506. Up to 2326 conditions per place. [2023-08-30 04:57:51,832 INFO L137 encePairwiseOnDemand]: 753/758 looper letters, 154 selfloop transitions, 7 changer transitions 0/161 dead transitions. [2023-08-30 04:57:51,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 161 transitions, 779 flow [2023-08-30 04:57:51,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 04:57:51,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 04:57:51,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2584 transitions. [2023-08-30 04:57:51,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261213720316623 [2023-08-30 04:57:51,837 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2584 transitions. [2023-08-30 04:57:51,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2584 transitions. [2023-08-30 04:57:51,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:57:51,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2584 transitions. [2023-08-30 04:57:51,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:51,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:51,845 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:51,845 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 205 flow. Second operand 8 states and 2584 transitions. [2023-08-30 04:57:51,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 161 transitions, 779 flow [2023-08-30 04:57:51,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 161 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:57:51,847 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 244 flow [2023-08-30 04:57:51,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=244, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2023-08-30 04:57:51,848 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 4 predicate places. [2023-08-30 04:57:51,848 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 244 flow [2023-08-30 04:57:51,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 306.2) internal successors, (3062), 10 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:57:51,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:57:51,849 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:57:51,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-08-30 04:57:52,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:52,052 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:57:52,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:57:52,053 INFO L85 PathProgramCache]: Analyzing trace with hash 100495103, now seen corresponding path program 1 times [2023-08-30 04:57:52,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:57:52,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129728737] [2023-08-30 04:57:52,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:57:52,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:57:52,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:57:52,055 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:57:52,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-08-30 04:57:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:57:52,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 04:57:52,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:57:52,568 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 04:57:52,569 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 04:57:52,641 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 04:57:52,642 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 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 04:57:52,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:57:52,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:57:52,731 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 04:57:52,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 04:57:52,769 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 04:57:52,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:57:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:57:52,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:57:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:57:55,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:57:55,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129728737] [2023-08-30 04:57:55,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129728737] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:57:55,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:57:55,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 04:57:55,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085503204] [2023-08-30 04:57:55,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:57:55,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 04:57:55,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:57:55,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 04:57:55,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-30 04:57:57,413 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 [1] [2023-08-30 04:57:59,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:58:01,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:58:04,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:58:07,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:58:09,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:58:12,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:58:15,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:58:17,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:58:20,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 758 [2023-08-30 04:58:20,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 244 flow. Second operand has 12 states, 12 states have (on average 293.0) internal successors, (3516), 12 states have internal predecessors, (3516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:20,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:58:20,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 758 [2023-08-30 04:58:20,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:58:21,920 INFO L130 PetriNetUnfolder]: 5221/7530 cut-off events. [2023-08-30 04:58:21,920 INFO L131 PetriNetUnfolder]: For 2784/2784 co-relation queries the response was YES. [2023-08-30 04:58:21,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17367 conditions, 7530 events. 5221/7530 cut-off events. For 2784/2784 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 37886 event pairs, 901 based on Foata normal form. 300/4754 useless extension candidates. Maximal degree in co-relation 17343. Up to 1978 conditions per place. [2023-08-30 04:58:21,960 INFO L137 encePairwiseOnDemand]: 751/758 looper letters, 148 selfloop transitions, 10 changer transitions 0/158 dead transitions. [2023-08-30 04:58:21,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 158 transitions, 788 flow [2023-08-30 04:58:21,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 04:58:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 04:58:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2476 transitions. [2023-08-30 04:58:21,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.408311345646438 [2023-08-30 04:58:21,965 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2476 transitions. [2023-08-30 04:58:21,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2476 transitions. [2023-08-30 04:58:21,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:58:21,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2476 transitions. [2023-08-30 04:58:21,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 309.5) internal successors, (2476), 8 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:21,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:21,972 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:21,972 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 244 flow. Second operand 8 states and 2476 transitions. [2023-08-30 04:58:21,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 158 transitions, 788 flow [2023-08-30 04:58:21,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 158 transitions, 777 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 04:58:21,984 INFO L231 Difference]: Finished difference. Result has 77 places, 55 transitions, 278 flow [2023-08-30 04:58:21,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=278, PETRI_PLACES=77, PETRI_TRANSITIONS=55} [2023-08-30 04:58:21,985 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2023-08-30 04:58:21,985 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 55 transitions, 278 flow [2023-08-30 04:58:21,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 293.0) internal successors, (3516), 12 states have internal predecessors, (3516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:21,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:58:21,986 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:58:21,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-08-30 04:58:22,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:22,189 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:58:22,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:58:22,189 INFO L85 PathProgramCache]: Analyzing trace with hash 99005879, now seen corresponding path program 1 times [2023-08-30 04:58:22,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:58:22,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933074109] [2023-08-30 04:58:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:58:22,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:22,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:58:22,191 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:58:22,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-30 04:58:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:58:22,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 04:58:22,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:58:22,692 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 04:58:22,692 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 04:58:22,776 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 04:58:22,777 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 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 04:58:22,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:58:22,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:58:22,879 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 04:58:22,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 04:58:22,925 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 04:58:22,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:58:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:58:23,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:58:23,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:58:23,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933074109] [2023-08-30 04:58:23,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933074109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:58:23,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:58:23,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 04:58:23,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10826260] [2023-08-30 04:58:23,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:58:23,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:58:23,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:58:23,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:58:23,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:58:23,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 758 [2023-08-30 04:58:23,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 55 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 301.0) internal successors, (1806), 6 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:23,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:58:23,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 758 [2023-08-30 04:58:23,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:58:24,866 INFO L130 PetriNetUnfolder]: 8941/12880 cut-off events. [2023-08-30 04:58:24,866 INFO L131 PetriNetUnfolder]: For 11835/11835 co-relation queries the response was YES. [2023-08-30 04:58:24,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32692 conditions, 12880 events. 8941/12880 cut-off events. For 11835/11835 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 72211 event pairs, 4477 based on Foata normal form. 0/8408 useless extension candidates. Maximal degree in co-relation 32664. Up to 7524 conditions per place. [2023-08-30 04:58:24,941 INFO L137 encePairwiseOnDemand]: 753/758 looper letters, 82 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-08-30 04:58:24,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 86 transitions, 588 flow [2023-08-30 04:58:24,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:58:24,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:58:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1560 transitions. [2023-08-30 04:58:24,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41160949868073876 [2023-08-30 04:58:24,944 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1560 transitions. [2023-08-30 04:58:24,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1560 transitions. [2023-08-30 04:58:24,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:58:24,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1560 transitions. [2023-08-30 04:58:24,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:24,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:24,949 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:24,949 INFO L175 Difference]: Start difference. First operand has 77 places, 55 transitions, 278 flow. Second operand 5 states and 1560 transitions. [2023-08-30 04:58:24,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 86 transitions, 588 flow [2023-08-30 04:58:24,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 537 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-08-30 04:58:24,966 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 267 flow [2023-08-30 04:58:24,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2023-08-30 04:58:24,967 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2023-08-30 04:58:24,967 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 267 flow [2023-08-30 04:58:24,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 301.0) internal successors, (1806), 6 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:24,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:58:24,967 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:58:24,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-08-30 04:58:25,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:25,175 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:58:25,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:58:25,175 INFO L85 PathProgramCache]: Analyzing trace with hash 99005947, now seen corresponding path program 1 times [2023-08-30 04:58:25,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:58:25,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431044392] [2023-08-30 04:58:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:58:25,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:25,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:58:25,177 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:58:25,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-30 04:58:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:58:25,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 04:58:25,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:58:25,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 04:58:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:58:25,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:58:25,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:58:25,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431044392] [2023-08-30 04:58:25,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431044392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:58:25,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:58:25,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 04:58:25,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037814019] [2023-08-30 04:58:25,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:58:25,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:58:25,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:58:25,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:58:25,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:58:25,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 758 [2023-08-30 04:58:25,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 307.4) internal successors, (1537), 5 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:25,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:58:25,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 758 [2023-08-30 04:58:25,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:58:27,135 INFO L130 PetriNetUnfolder]: 8209/11836 cut-off events. [2023-08-30 04:58:27,135 INFO L131 PetriNetUnfolder]: For 6351/6351 co-relation queries the response was YES. [2023-08-30 04:58:27,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29726 conditions, 11836 events. 8209/11836 cut-off events. For 6351/6351 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 65158 event pairs, 4477 based on Foata normal form. 0/8016 useless extension candidates. Maximal degree in co-relation 29701. Up to 7512 conditions per place. [2023-08-30 04:58:27,336 INFO L137 encePairwiseOnDemand]: 753/758 looper letters, 81 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-08-30 04:58:27,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 85 transitions, 547 flow [2023-08-30 04:58:27,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:58:27,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:58:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1589 transitions. [2023-08-30 04:58:27,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192612137203166 [2023-08-30 04:58:27,339 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1589 transitions. [2023-08-30 04:58:27,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1589 transitions. [2023-08-30 04:58:27,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:58:27,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1589 transitions. [2023-08-30 04:58:27,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 317.8) internal successors, (1589), 5 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:27,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:27,344 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:27,344 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 267 flow. Second operand 5 states and 1589 transitions. [2023-08-30 04:58:27,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 85 transitions, 547 flow [2023-08-30 04:58:27,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 85 transitions, 541 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 04:58:27,350 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 273 flow [2023-08-30 04:58:27,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=75, PETRI_TRANSITIONS=56} [2023-08-30 04:58:27,350 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2023-08-30 04:58:27,350 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 273 flow [2023-08-30 04:58:27,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 307.4) internal successors, (1537), 5 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:27,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:58:27,351 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:58:27,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-08-30 04:58:27,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:27,551 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:58:27,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:58:27,551 INFO L85 PathProgramCache]: Analyzing trace with hash 99005949, now seen corresponding path program 1 times [2023-08-30 04:58:27,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:58:27,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481671546] [2023-08-30 04:58:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:58:27,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:27,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:58:27,553 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:58:27,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-08-30 04:58:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:58:27,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 04:58:27,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:58:27,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 04:58:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:58:27,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:58:27,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:58:27,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481671546] [2023-08-30 04:58:27,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481671546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:58:27,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:58:27,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:58:27,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113474823] [2023-08-30 04:58:27,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:58:27,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:58:27,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:58:27,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:58:27,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:58:27,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 758 [2023-08-30 04:58:27,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 56 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:27,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:58:27,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 758 [2023-08-30 04:58:27,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:58:28,818 INFO L130 PetriNetUnfolder]: 5735/8304 cut-off events. [2023-08-30 04:58:28,818 INFO L131 PetriNetUnfolder]: For 5527/5527 co-relation queries the response was YES. [2023-08-30 04:58:28,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21953 conditions, 8304 events. 5735/8304 cut-off events. For 5527/5527 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 41806 event pairs, 4925 based on Foata normal form. 0/6360 useless extension candidates. Maximal degree in co-relation 21927. Up to 8286 conditions per place. [2023-08-30 04:58:28,866 INFO L137 encePairwiseOnDemand]: 754/758 looper letters, 52 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-30 04:58:28,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 54 transitions, 377 flow [2023-08-30 04:58:28,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:58:28,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:58:28,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1242 transitions. [2023-08-30 04:58:28,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096306068601583 [2023-08-30 04:58:28,869 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1242 transitions. [2023-08-30 04:58:28,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1242 transitions. [2023-08-30 04:58:28,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:58:28,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1242 transitions. [2023-08-30 04:58:28,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 310.5) internal successors, (1242), 4 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:28,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:28,874 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:28,874 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 273 flow. Second operand 4 states and 1242 transitions. [2023-08-30 04:58:28,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 54 transitions, 377 flow [2023-08-30 04:58:28,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 54 transitions, 369 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 04:58:28,882 INFO L231 Difference]: Finished difference. Result has 72 places, 54 transitions, 265 flow [2023-08-30 04:58:28,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=72, PETRI_TRANSITIONS=54} [2023-08-30 04:58:28,883 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2023-08-30 04:58:28,883 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 54 transitions, 265 flow [2023-08-30 04:58:28,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:28,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:58:28,884 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:58:28,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-08-30 04:58:29,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:29,087 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:58:29,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:58:29,088 INFO L85 PathProgramCache]: Analyzing trace with hash 655479316, now seen corresponding path program 1 times [2023-08-30 04:58:29,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:58:29,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015419104] [2023-08-30 04:58:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:58:29,089 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:29,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:58:29,090 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:58:29,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-30 04:58:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:58:29,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 04:58:29,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:58:29,652 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 04:58:29,653 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 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 04:58:29,733 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 04:58:29,733 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 04:58:29,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:58:29,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:58:29,810 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 04:58:29,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 04:58:29,850 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 04:58:29,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:58:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:58:29,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:58:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:58:32,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:58:32,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015419104] [2023-08-30 04:58:32,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015419104] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:58:32,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:58:32,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 04:58:32,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97384499] [2023-08-30 04:58:32,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:58:32,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 04:58:32,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:58:32,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 04:58:32,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-30 04:58:35,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:58:38,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:58:41,015 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 [1] [2023-08-30 04:58:42,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 758 [2023-08-30 04:58:42,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 54 transitions, 265 flow. Second operand has 12 states, 12 states have (on average 297.3333333333333) internal successors, (3568), 12 states have internal predecessors, (3568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:42,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:58:42,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 758 [2023-08-30 04:58:42,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:58:44,660 INFO L130 PetriNetUnfolder]: 12371/17780 cut-off events. [2023-08-30 04:58:44,660 INFO L131 PetriNetUnfolder]: For 11255/11255 co-relation queries the response was YES. [2023-08-30 04:58:44,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45123 conditions, 17780 events. 12371/17780 cut-off events. For 11255/11255 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 98874 event pairs, 2065 based on Foata normal form. 798/14246 useless extension candidates. Maximal degree in co-relation 45097. Up to 4194 conditions per place. [2023-08-30 04:58:44,867 INFO L137 encePairwiseOnDemand]: 751/758 looper letters, 158 selfloop transitions, 9 changer transitions 0/167 dead transitions. [2023-08-30 04:58:44,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 167 transitions, 1043 flow [2023-08-30 04:58:44,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 04:58:44,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 04:58:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2493 transitions. [2023-08-30 04:58:44,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111147757255937 [2023-08-30 04:58:44,870 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2493 transitions. [2023-08-30 04:58:44,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2493 transitions. [2023-08-30 04:58:44,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:58:44,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2493 transitions. [2023-08-30 04:58:44,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 311.625) internal successors, (2493), 8 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:44,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:44,880 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:44,880 INFO L175 Difference]: Start difference. First operand has 72 places, 54 transitions, 265 flow. Second operand 8 states and 2493 transitions. [2023-08-30 04:58:44,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 167 transitions, 1043 flow [2023-08-30 04:58:44,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 167 transitions, 1040 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:58:44,888 INFO L231 Difference]: Finished difference. Result has 81 places, 58 transitions, 317 flow [2023-08-30 04:58:44,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=317, PETRI_PLACES=81, PETRI_TRANSITIONS=58} [2023-08-30 04:58:44,888 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 16 predicate places. [2023-08-30 04:58:44,888 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 58 transitions, 317 flow [2023-08-30 04:58:44,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 297.3333333333333) internal successors, (3568), 12 states have internal predecessors, (3568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:44,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:58:44,889 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:58:44,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-08-30 04:58:45,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:45,090 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:58:45,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:58:45,090 INFO L85 PathProgramCache]: Analyzing trace with hash 652748557, now seen corresponding path program 1 times [2023-08-30 04:58:45,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:58:45,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547260748] [2023-08-30 04:58:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:58:45,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:45,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:58:45,091 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:58:45,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-08-30 04:58:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:58:45,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 04:58:45,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:58:45,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 04:58:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:58:45,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:58:45,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:58:45,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547260748] [2023-08-30 04:58:45,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547260748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:58:45,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:58:45,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 04:58:45,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381311976] [2023-08-30 04:58:45,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:58:45,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:58:45,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:58:45,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:58:45,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:58:45,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 758 [2023-08-30 04:58:45,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 58 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 307.8) internal successors, (1539), 5 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:45,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:58:45,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 758 [2023-08-30 04:58:45,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:58:48,620 INFO L130 PetriNetUnfolder]: 18929/27160 cut-off events. [2023-08-30 04:58:48,621 INFO L131 PetriNetUnfolder]: For 30563/30563 co-relation queries the response was YES. [2023-08-30 04:58:48,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77776 conditions, 27160 events. 18929/27160 cut-off events. For 30563/30563 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 161702 event pairs, 10685 based on Foata normal form. 0/22196 useless extension candidates. Maximal degree in co-relation 77746. Up to 17762 conditions per place. [2023-08-30 04:58:48,962 INFO L137 encePairwiseOnDemand]: 753/758 looper letters, 86 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2023-08-30 04:58:48,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 90 transitions, 666 flow [2023-08-30 04:58:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:58:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:58:48,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1584 transitions. [2023-08-30 04:58:48,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4179419525065963 [2023-08-30 04:58:48,965 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1584 transitions. [2023-08-30 04:58:48,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1584 transitions. [2023-08-30 04:58:48,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:58:48,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1584 transitions. [2023-08-30 04:58:48,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 316.8) internal successors, (1584), 5 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:48,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:48,969 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:48,969 INFO L175 Difference]: Start difference. First operand has 81 places, 58 transitions, 317 flow. Second operand 5 states and 1584 transitions. [2023-08-30 04:58:48,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 90 transitions, 666 flow [2023-08-30 04:58:49,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 643 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-30 04:58:49,034 INFO L231 Difference]: Finished difference. Result has 83 places, 59 transitions, 320 flow [2023-08-30 04:58:49,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=83, PETRI_TRANSITIONS=59} [2023-08-30 04:58:49,035 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 18 predicate places. [2023-08-30 04:58:49,035 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 59 transitions, 320 flow [2023-08-30 04:58:49,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 307.8) internal successors, (1539), 5 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:49,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:58:49,036 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:58:49,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-08-30 04:58:49,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:49,246 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:58:49,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:58:49,246 INFO L85 PathProgramCache]: Analyzing trace with hash 655479384, now seen corresponding path program 1 times [2023-08-30 04:58:49,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:58:49,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334344843] [2023-08-30 04:58:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:58:49,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:49,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:58:49,248 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:58:49,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-08-30 04:58:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:58:49,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 04:58:49,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:58:49,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 04:58:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:58:49,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:58:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:58:49,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:58:49,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334344843] [2023-08-30 04:58:49,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334344843] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:58:49,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:58:49,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-08-30 04:58:49,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324982575] [2023-08-30 04:58:49,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:58:49,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 04:58:49,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:58:49,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 04:58:49,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 04:58:52,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 758 [2023-08-30 04:58:52,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 59 transitions, 320 flow. Second operand has 10 states, 10 states have (on average 306.4) internal successors, (3064), 10 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:52,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:58:52,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 758 [2023-08-30 04:58:52,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:58:55,347 INFO L130 PetriNetUnfolder]: 17573/25400 cut-off events. [2023-08-30 04:58:55,347 INFO L131 PetriNetUnfolder]: For 28098/28098 co-relation queries the response was YES. [2023-08-30 04:58:55,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74508 conditions, 25400 events. 17573/25400 cut-off events. For 28098/28098 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 150987 event pairs, 5029 based on Foata normal form. 1212/23248 useless extension candidates. Maximal degree in co-relation 74477. Up to 8390 conditions per place. [2023-08-30 04:58:55,556 INFO L137 encePairwiseOnDemand]: 753/758 looper letters, 163 selfloop transitions, 7 changer transitions 0/170 dead transitions. [2023-08-30 04:58:55,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 170 transitions, 1136 flow [2023-08-30 04:58:55,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 04:58:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 04:58:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2563 transitions. [2023-08-30 04:58:55,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42265831134564646 [2023-08-30 04:58:55,559 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2563 transitions. [2023-08-30 04:58:55,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2563 transitions. [2023-08-30 04:58:55,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:58:55,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2563 transitions. [2023-08-30 04:58:55,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 320.375) internal successors, (2563), 8 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:55,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:55,566 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:55,566 INFO L175 Difference]: Start difference. First operand has 83 places, 59 transitions, 320 flow. Second operand 8 states and 2563 transitions. [2023-08-30 04:58:55,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 170 transitions, 1136 flow [2023-08-30 04:58:55,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 170 transitions, 1120 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 04:58:55,679 INFO L231 Difference]: Finished difference. Result has 87 places, 59 transitions, 330 flow [2023-08-30 04:58:55,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=330, PETRI_PLACES=87, PETRI_TRANSITIONS=59} [2023-08-30 04:58:55,679 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 22 predicate places. [2023-08-30 04:58:55,679 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 59 transitions, 330 flow [2023-08-30 04:58:55,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 306.4) internal successors, (3064), 10 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:55,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:58:55,680 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:58:55,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-08-30 04:58:55,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:55,881 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:58:55,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:58:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash 652748412, now seen corresponding path program 1 times [2023-08-30 04:58:55,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:58:55,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997461052] [2023-08-30 04:58:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:58:55,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:55,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:58:55,883 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:58:55,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-08-30 04:58:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:58:56,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 04:58:56,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:58:56,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 04:58:56,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 04:58:56,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:58:56,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:58:56,354 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 04:58:56,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 04:58:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:58:56,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:58:56,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:58:56,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997461052] [2023-08-30 04:58:56,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997461052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:58:56,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:58:56,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 04:58:56,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399182227] [2023-08-30 04:58:56,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:58:56,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:58:56,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:58:56,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:58:56,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:58:56,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 758 [2023-08-30 04:58:56,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 59 transitions, 330 flow. Second operand has 5 states, 5 states have (on average 301.8) internal successors, (1509), 5 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:56,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:58:56,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 758 [2023-08-30 04:58:56,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:58:59,154 INFO L130 PetriNetUnfolder]: 15543/22492 cut-off events. [2023-08-30 04:58:59,155 INFO L131 PetriNetUnfolder]: For 26713/26713 co-relation queries the response was YES. [2023-08-30 04:58:59,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67840 conditions, 22492 events. 15543/22492 cut-off events. For 26713/26713 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 130903 event pairs, 10121 based on Foata normal form. 0/20088 useless extension candidates. Maximal degree in co-relation 67809. Up to 16614 conditions per place. [2023-08-30 04:58:59,397 INFO L137 encePairwiseOnDemand]: 753/758 looper letters, 85 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-08-30 04:58:59,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 89 transitions, 675 flow [2023-08-30 04:58:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:58:59,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:58:59,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1553 transitions. [2023-08-30 04:58:59,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40976253298153037 [2023-08-30 04:58:59,399 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1553 transitions. [2023-08-30 04:58:59,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1553 transitions. [2023-08-30 04:58:59,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:58:59,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1553 transitions. [2023-08-30 04:58:59,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.6) internal successors, (1553), 5 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:59,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:59,404 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:59,404 INFO L175 Difference]: Start difference. First operand has 87 places, 59 transitions, 330 flow. Second operand 5 states and 1553 transitions. [2023-08-30 04:58:59,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 89 transitions, 675 flow [2023-08-30 04:58:59,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 655 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 04:58:59,436 INFO L231 Difference]: Finished difference. Result has 86 places, 59 transitions, 330 flow [2023-08-30 04:58:59,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=86, PETRI_TRANSITIONS=59} [2023-08-30 04:58:59,436 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2023-08-30 04:58:59,437 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 59 transitions, 330 flow [2023-08-30 04:58:59,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 301.8) internal successors, (1509), 5 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:58:59,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:58:59,437 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:58:59,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-08-30 04:58:59,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:59,637 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:58:59,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:58:59,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1239625657, now seen corresponding path program 1 times [2023-08-30 04:58:59,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:58:59,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000748995] [2023-08-30 04:58:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:58:59,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:58:59,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:58:59,639 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:58:59,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-08-30 04:59:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:59:00,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 04:59:00,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:59:00,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 04:59:00,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 04:59:00,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:59:00,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:59:00,117 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 04:59:00,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 04:59:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:59:00,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:59:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:59:00,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:59:00,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000748995] [2023-08-30 04:59:00,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000748995] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:59:00,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:59:00,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-08-30 04:59:00,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760260745] [2023-08-30 04:59:00,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:59:00,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 04:59:00,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:59:00,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 04:59:00,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 04:59:03,047 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 [1] [2023-08-30 04:59:05,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:59:08,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:59:11,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:59:13,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:59:15,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:59:17,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:59:20,874 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 [1] [2023-08-30 04:59:21,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 758 [2023-08-30 04:59:21,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 59 transitions, 330 flow. Second operand has 10 states, 10 states have (on average 292.8) internal successors, (2928), 10 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:21,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:59:21,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 758 [2023-08-30 04:59:21,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:59:26,812 INFO L130 PetriNetUnfolder]: 32661/46784 cut-off events. [2023-08-30 04:59:26,812 INFO L131 PetriNetUnfolder]: For 59727/59727 co-relation queries the response was YES. [2023-08-30 04:59:27,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141485 conditions, 46784 events. 32661/46784 cut-off events. For 59727/59727 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 297612 event pairs, 8173 based on Foata normal form. 2634/44602 useless extension candidates. Maximal degree in co-relation 141453. Up to 13706 conditions per place. [2023-08-30 04:59:27,379 INFO L137 encePairwiseOnDemand]: 752/758 looper letters, 177 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2023-08-30 04:59:27,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 185 transitions, 1360 flow [2023-08-30 04:59:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 04:59:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 04:59:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2446 transitions. [2023-08-30 04:59:27,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033641160949868 [2023-08-30 04:59:27,382 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2446 transitions. [2023-08-30 04:59:27,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2446 transitions. [2023-08-30 04:59:27,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:59:27,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2446 transitions. [2023-08-30 04:59:27,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 305.75) internal successors, (2446), 8 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:27,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:27,390 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:27,390 INFO L175 Difference]: Start difference. First operand has 86 places, 59 transitions, 330 flow. Second operand 8 states and 2446 transitions. [2023-08-30 04:59:27,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 185 transitions, 1360 flow [2023-08-30 04:59:27,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 185 transitions, 1352 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 04:59:27,458 INFO L231 Difference]: Finished difference. Result has 93 places, 63 transitions, 375 flow [2023-08-30 04:59:27,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=375, PETRI_PLACES=93, PETRI_TRANSITIONS=63} [2023-08-30 04:59:27,458 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 28 predicate places. [2023-08-30 04:59:27,458 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 63 transitions, 375 flow [2023-08-30 04:59:27,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 292.8) internal successors, (2928), 10 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:27,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:59:27,459 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:59:27,470 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 [2023-08-30 04:59:27,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:59:27,659 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:59:27,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:59:27,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1239625512, now seen corresponding path program 1 times [2023-08-30 04:59:27,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:59:27,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494530148] [2023-08-30 04:59:27,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:59:27,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:59:27,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:59:27,661 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:59:27,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-08-30 04:59:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:59:27,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 04:59:27,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:59:28,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 04:59:28,069 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:59:28,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:59:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:59:28,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:59:28,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494530148] [2023-08-30 04:59:28,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494530148] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:59:28,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:59:28,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-08-30 04:59:28,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594390450] [2023-08-30 04:59:28,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:59:28,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 04:59:28,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:59:28,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 04:59:28,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 04:59:30,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 758 [2023-08-30 04:59:30,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 63 transitions, 375 flow. Second operand has 10 states, 10 states have (on average 306.6) internal successors, (3066), 10 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:30,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:59:30,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 758 [2023-08-30 04:59:30,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:59:36,649 INFO L130 PetriNetUnfolder]: 27723/40090 cut-off events. [2023-08-30 04:59:36,649 INFO L131 PetriNetUnfolder]: For 65488/65488 co-relation queries the response was YES. [2023-08-30 04:59:37,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132453 conditions, 40090 events. 27723/40090 cut-off events. For 65488/65488 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 253778 event pairs, 10121 based on Foata normal form. 2634/41584 useless extension candidates. Maximal degree in co-relation 132417. Up to 16608 conditions per place. [2023-08-30 04:59:37,168 INFO L137 encePairwiseOnDemand]: 753/758 looper letters, 175 selfloop transitions, 7 changer transitions 0/182 dead transitions. [2023-08-30 04:59:37,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 182 transitions, 1369 flow [2023-08-30 04:59:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 04:59:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 04:59:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2555 transitions. [2023-08-30 04:59:37,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42133905013192613 [2023-08-30 04:59:37,171 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2555 transitions. [2023-08-30 04:59:37,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2555 transitions. [2023-08-30 04:59:37,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:59:37,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2555 transitions. [2023-08-30 04:59:37,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 319.375) internal successors, (2555), 8 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:37,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:37,177 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:37,177 INFO L175 Difference]: Start difference. First operand has 93 places, 63 transitions, 375 flow. Second operand 8 states and 2555 transitions. [2023-08-30 04:59:37,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 182 transitions, 1369 flow [2023-08-30 04:59:37,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 182 transitions, 1348 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 04:59:37,610 INFO L231 Difference]: Finished difference. Result has 95 places, 62 transitions, 362 flow [2023-08-30 04:59:37,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=362, PETRI_PLACES=95, PETRI_TRANSITIONS=62} [2023-08-30 04:59:37,610 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 30 predicate places. [2023-08-30 04:59:37,611 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 62 transitions, 362 flow [2023-08-30 04:59:37,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 306.6) internal successors, (3066), 10 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:37,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:59:37,612 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:59:37,623 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 [2023-08-30 04:59:37,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:59:37,815 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:59:37,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:59:37,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2054984211, now seen corresponding path program 2 times [2023-08-30 04:59:37,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:59:37,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496622119] [2023-08-30 04:59:37,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 04:59:37,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:59:37,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:59:37,817 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:59:37,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-08-30 04:59:38,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 04:59:38,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:59:38,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 04:59:38,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:59:38,088 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 04:59:38,088 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 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 04:59:38,176 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 04:59:38,177 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 04:59:38,265 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 04:59:38,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-30 04:59:38,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:59:38,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:59:38,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:59:38,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2023-08-30 04:59:38,459 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-30 04:59:38,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 04:59:38,905 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-08-30 04:59:38,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:59:38,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:59:38,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496622119] [2023-08-30 04:59:38,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496622119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:59:38,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:59:38,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:59:38,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041177018] [2023-08-30 04:59:38,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:59:38,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:59:38,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:59:38,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:59:38,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:59:39,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 758 [2023-08-30 04:59:39,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 62 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 300.4) internal successors, (1502), 5 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:39,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:59:39,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 758 [2023-08-30 04:59:39,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:59:44,242 INFO L130 PetriNetUnfolder]: 26479/38340 cut-off events. [2023-08-30 04:59:44,243 INFO L131 PetriNetUnfolder]: For 57750/57750 co-relation queries the response was YES. [2023-08-30 04:59:44,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122933 conditions, 38340 events. 26479/38340 cut-off events. For 57750/57750 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 236781 event pairs, 24525 based on Foata normal form. 0/37734 useless extension candidates. Maximal degree in co-relation 122899. Up to 38328 conditions per place. [2023-08-30 04:59:44,626 INFO L137 encePairwiseOnDemand]: 754/758 looper letters, 58 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-08-30 04:59:44,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 61 transitions, 478 flow [2023-08-30 04:59:44,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:59:44,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:59:44,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1526 transitions. [2023-08-30 04:59:44,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40263852242744064 [2023-08-30 04:59:44,630 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1526 transitions. [2023-08-30 04:59:44,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1526 transitions. [2023-08-30 04:59:44,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:59:44,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1526 transitions. [2023-08-30 04:59:44,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.2) internal successors, (1526), 5 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:44,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:44,635 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:44,635 INFO L175 Difference]: Start difference. First operand has 95 places, 62 transitions, 362 flow. Second operand 5 states and 1526 transitions. [2023-08-30 04:59:44,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 61 transitions, 478 flow [2023-08-30 04:59:44,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 61 transitions, 463 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 04:59:44,775 INFO L231 Difference]: Finished difference. Result has 91 places, 61 transitions, 347 flow [2023-08-30 04:59:44,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=91, PETRI_TRANSITIONS=61} [2023-08-30 04:59:44,776 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 26 predicate places. [2023-08-30 04:59:44,776 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 61 transitions, 347 flow [2023-08-30 04:59:44,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 300.4) internal successors, (1502), 5 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:59:44,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:59:44,776 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:59:44,784 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 [2023-08-30 04:59:44,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:59:44,978 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 04:59:44,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:59:44,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2054984148, now seen corresponding path program 2 times [2023-08-30 04:59:44,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:59:44,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655570980] [2023-08-30 04:59:44,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 04:59:44,979 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:59:44,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:59:44,980 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:59:44,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-08-30 04:59:45,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 04:59:45,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:59:45,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 04:59:45,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:59:45,464 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 04:59:45,465 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 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 04:59:45,536 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 04:59:45,536 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 04:59:45,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:59:45,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:59:45,605 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 04:59:45,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-30 04:59:45,690 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-30 04:59:45,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 04:59:45,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 04:59:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:59:45,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:59:49,179 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 04:59:49,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:59:49,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655570980] [2023-08-30 04:59:49,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655570980] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:59:49,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:59:49,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2023-08-30 04:59:49,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516972602] [2023-08-30 04:59:49,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:59:49,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 04:59:49,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:59:49,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 04:59:49,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=274, Unknown=1, NotChecked=0, Total=342 [2023-08-30 04:59:51,678 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 [1] [2023-08-30 04:59:53,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:59:56,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 04:59:58,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:00:00,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:00:02,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:00:05,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:00:07,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:00:09,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:00:12,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:00:14,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:00:18,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:00:20,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:00:22,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:00:25,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:00:30,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 758 [2023-08-30 05:00:30,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 61 transitions, 347 flow. Second operand has 19 states, 19 states have (on average 270.89473684210526) internal successors, (5147), 19 states have internal predecessors, (5147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:00:30,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:00:30,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 758 [2023-08-30 05:00:30,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:00:38,412 INFO L130 PetriNetUnfolder]: 31277/45304 cut-off events. [2023-08-30 05:00:38,413 INFO L131 PetriNetUnfolder]: For 69117/69117 co-relation queries the response was YES. [2023-08-30 05:00:38,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139523 conditions, 45304 events. 31277/45304 cut-off events. For 69117/69117 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 292699 event pairs, 5209 based on Foata normal form. 506/45094 useless extension candidates. Maximal degree in co-relation 139489. Up to 8728 conditions per place. [2023-08-30 05:00:38,933 INFO L137 encePairwiseOnDemand]: 752/758 looper letters, 241 selfloop transitions, 10 changer transitions 0/251 dead transitions. [2023-08-30 05:00:38,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 251 transitions, 1740 flow [2023-08-30 05:00:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 05:00:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 05:00:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2867 transitions. [2023-08-30 05:00:38,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782321899736148 [2023-08-30 05:00:38,937 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2867 transitions. [2023-08-30 05:00:38,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2867 transitions. [2023-08-30 05:00:38,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:00:38,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2867 transitions. [2023-08-30 05:00:38,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 286.7) internal successors, (2867), 10 states have internal predecessors, (2867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:00:38,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 758.0) internal successors, (8338), 11 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:00:38,943 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 758.0) internal successors, (8338), 11 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:00:38,943 INFO L175 Difference]: Start difference. First operand has 91 places, 61 transitions, 347 flow. Second operand 10 states and 2867 transitions. [2023-08-30 05:00:38,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 251 transitions, 1740 flow [2023-08-30 05:00:39,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 251 transitions, 1735 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 05:00:39,104 INFO L231 Difference]: Finished difference. Result has 99 places, 63 transitions, 387 flow [2023-08-30 05:00:39,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=387, PETRI_PLACES=99, PETRI_TRANSITIONS=63} [2023-08-30 05:00:39,104 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 34 predicate places. [2023-08-30 05:00:39,104 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 63 transitions, 387 flow [2023-08-30 05:00:39,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 270.89473684210526) internal successors, (5147), 19 states have internal predecessors, (5147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:00:39,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:00:39,106 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:00:39,124 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 (31)] Ended with exit code 0 [2023-08-30 05:00:39,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:00:39,321 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:00:39,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:00:39,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1549156036, now seen corresponding path program 2 times [2023-08-30 05:00:39,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:00:39,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392796854] [2023-08-30 05:00:39,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:00:39,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:00:39,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:00:39,323 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:00:39,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-08-30 05:00:39,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:00:39,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:00:39,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:00:39,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:00:39,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 05:00:39,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 05:00:39,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:00:39,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 05:00:39,883 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 05:00:39,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 05:00:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:00:40,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:00:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:00:40,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:00:40,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392796854] [2023-08-30 05:00:40,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392796854] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:00:40,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:00:40,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-08-30 05:00:40,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533460082] [2023-08-30 05:00:40,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:00:40,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:00:40,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:00:40,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:00:40,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:00:44,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:00:49,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:00:55,896 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 [1] [2023-08-30 05:00:56,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 758 [2023-08-30 05:00:56,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 63 transitions, 387 flow. Second operand has 16 states, 16 states have (on average 297.125) internal successors, (4754), 16 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:00:56,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:00:56,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 758 [2023-08-30 05:00:56,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:01:05,228 INFO L130 PetriNetUnfolder]: 38153/55228 cut-off events. [2023-08-30 05:01:05,228 INFO L131 PetriNetUnfolder]: For 112370/112370 co-relation queries the response was YES. [2023-08-30 05:01:05,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175803 conditions, 55228 events. 38153/55228 cut-off events. For 112370/112370 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 362815 event pairs, 9223 based on Foata normal form. 996/55352 useless extension candidates. Maximal degree in co-relation 175767. Up to 15460 conditions per place. [2023-08-30 05:01:05,896 INFO L137 encePairwiseOnDemand]: 752/758 looper letters, 239 selfloop transitions, 9 changer transitions 0/248 dead transitions. [2023-08-30 05:01:05,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 248 transitions, 2042 flow [2023-08-30 05:01:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 05:01:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 05:01:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3103 transitions. [2023-08-30 05:01:05,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40936675461741423 [2023-08-30 05:01:05,899 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3103 transitions. [2023-08-30 05:01:05,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3103 transitions. [2023-08-30 05:01:05,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:01:05,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3103 transitions. [2023-08-30 05:01:05,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 310.3) internal successors, (3103), 10 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:05,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 758.0) internal successors, (8338), 11 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:05,908 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 758.0) internal successors, (8338), 11 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:05,909 INFO L175 Difference]: Start difference. First operand has 99 places, 63 transitions, 387 flow. Second operand 10 states and 3103 transitions. [2023-08-30 05:01:05,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 248 transitions, 2042 flow [2023-08-30 05:01:06,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 248 transitions, 1940 flow, removed 14 selfloop flow, removed 7 redundant places. [2023-08-30 05:01:06,514 INFO L231 Difference]: Finished difference. Result has 103 places, 65 transitions, 407 flow [2023-08-30 05:01:06,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=407, PETRI_PLACES=103, PETRI_TRANSITIONS=65} [2023-08-30 05:01:06,514 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 38 predicate places. [2023-08-30 05:01:06,514 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 65 transitions, 407 flow [2023-08-30 05:01:06,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 297.125) internal successors, (4754), 16 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:06,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:01:06,515 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:01:06,528 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 (32)] Ended with exit code 0 [2023-08-30 05:01:06,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:01:06,716 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:01:06,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:01:06,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1549155891, now seen corresponding path program 2 times [2023-08-30 05:01:06,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:01:06,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859512799] [2023-08-30 05:01:06,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:01:06,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:01:06,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:01:06,718 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:01:06,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-08-30 05:01:06,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 05:01:06,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:01:06,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 05:01:06,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:01:06,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 05:01:07,010 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 05:01:07,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 05:01:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 05:01:07,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:01:07,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:01:07,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859512799] [2023-08-30 05:01:07,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859512799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:01:07,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:01:07,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:01:07,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391066132] [2023-08-30 05:01:07,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:01:07,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:01:07,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:01:07,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:01:07,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:01:07,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 758 [2023-08-30 05:01:07,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 65 transitions, 407 flow. Second operand has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:07,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:01:07,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 758 [2023-08-30 05:01:07,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:01:14,195 INFO L130 PetriNetUnfolder]: 33569/48652 cut-off events. [2023-08-30 05:01:14,195 INFO L131 PetriNetUnfolder]: For 89841/89841 co-relation queries the response was YES. [2023-08-30 05:01:14,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162915 conditions, 48652 events. 33569/48652 cut-off events. For 89841/89841 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 308920 event pairs, 31263 based on Foata normal form. 1992/49876 useless extension candidates. Maximal degree in co-relation 162877. Up to 48634 conditions per place. [2023-08-30 05:01:14,826 INFO L137 encePairwiseOnDemand]: 754/758 looper letters, 60 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-08-30 05:01:14,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 63 transitions, 520 flow [2023-08-30 05:01:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:01:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:01:14,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1565 transitions. [2023-08-30 05:01:14,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129287598944591 [2023-08-30 05:01:14,829 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1565 transitions. [2023-08-30 05:01:14,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1565 transitions. [2023-08-30 05:01:14,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:01:14,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1565 transitions. [2023-08-30 05:01:14,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:14,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:14,835 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:14,835 INFO L175 Difference]: Start difference. First operand has 103 places, 65 transitions, 407 flow. Second operand 5 states and 1565 transitions. [2023-08-30 05:01:14,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 63 transitions, 520 flow [2023-08-30 05:01:15,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 63 transitions, 501 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-30 05:01:15,158 INFO L231 Difference]: Finished difference. Result has 97 places, 63 transitions, 381 flow [2023-08-30 05:01:15,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=97, PETRI_TRANSITIONS=63} [2023-08-30 05:01:15,159 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 32 predicate places. [2023-08-30 05:01:15,159 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 63 transitions, 381 flow [2023-08-30 05:01:15,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:15,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:01:15,160 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:01:15,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-08-30 05:01:15,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:01:15,361 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:01:15,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:01:15,361 INFO L85 PathProgramCache]: Analyzing trace with hash -779186809, now seen corresponding path program 3 times [2023-08-30 05:01:15,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:01:15,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449570218] [2023-08-30 05:01:15,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:01:15,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:01:15,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:01:15,363 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:01:15,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-08-30 05:01:16,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 05:01:16,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:01:16,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:01:16,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:01:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:01:16,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:01:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:01:16,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:01:16,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449570218] [2023-08-30 05:01:16,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449570218] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:01:16,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:01:16,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-08-30 05:01:16,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752995324] [2023-08-30 05:01:16,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:01:16,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 05:01:16,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:01:16,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 05:01:16,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-30 05:01:16,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 758 [2023-08-30 05:01:16,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 63 transitions, 381 flow. Second operand has 14 states, 14 states have (on average 320.85714285714283) internal successors, (4492), 14 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:16,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:01:16,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 758 [2023-08-30 05:01:16,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:01:24,155 INFO L130 PetriNetUnfolder]: 30281/44368 cut-off events. [2023-08-30 05:01:24,155 INFO L131 PetriNetUnfolder]: For 75552/75552 co-relation queries the response was YES. [2023-08-30 05:01:24,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137703 conditions, 44368 events. 30281/44368 cut-off events. For 75552/75552 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 291349 event pairs, 2611 based on Foata normal form. 1992/45644 useless extension candidates. Maximal degree in co-relation 137666. Up to 6636 conditions per place. [2023-08-30 05:01:24,680 INFO L137 encePairwiseOnDemand]: 755/758 looper letters, 238 selfloop transitions, 6 changer transitions 0/244 dead transitions. [2023-08-30 05:01:24,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 244 transitions, 1918 flow [2023-08-30 05:01:24,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:01:24,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:01:24,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2702 transitions. [2023-08-30 05:01:24,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44558047493403696 [2023-08-30 05:01:24,683 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2702 transitions. [2023-08-30 05:01:24,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2702 transitions. [2023-08-30 05:01:24,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:01:24,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2702 transitions. [2023-08-30 05:01:24,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 337.75) internal successors, (2702), 8 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:24,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:24,689 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:24,689 INFO L175 Difference]: Start difference. First operand has 97 places, 63 transitions, 381 flow. Second operand 8 states and 2702 transitions. [2023-08-30 05:01:24,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 244 transitions, 1918 flow [2023-08-30 05:01:25,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 244 transitions, 1900 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-30 05:01:25,519 INFO L231 Difference]: Finished difference. Result has 94 places, 61 transitions, 357 flow [2023-08-30 05:01:25,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=87, 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=8, PETRI_FLOW=357, PETRI_PLACES=94, PETRI_TRANSITIONS=61} [2023-08-30 05:01:25,519 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 29 predicate places. [2023-08-30 05:01:25,519 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 61 transitions, 357 flow [2023-08-30 05:01:25,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 320.85714285714283) internal successors, (4492), 14 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:25,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:01:25,520 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:01:25,534 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 (34)] Ended with exit code 0 [2023-08-30 05:01:25,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:01:25,721 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:01:25,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:01:25,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2008247313, now seen corresponding path program 2 times [2023-08-30 05:01:25,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:01:25,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119450206] [2023-08-30 05:01:25,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:01:25,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:01:25,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:01:25,723 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:01:25,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-08-30 05:01:25,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 05:01:25,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:01:25,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 05:01:25,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:01:26,065 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 05:01:26,066 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 05:01:26,175 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:01:26,175 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 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:01:26,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:01:26,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 05:01:26,251 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 05:01:26,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 05:01:26,292 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 05:01:26,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 05:01:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-08-30 05:01:26,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:01:26,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:01:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119450206] [2023-08-30 05:01:26,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119450206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:01:26,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:01:26,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:01:26,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106033984] [2023-08-30 05:01:26,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:01:26,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:01:26,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:01:26,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:01:26,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:01:26,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 758 [2023-08-30 05:01:26,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 61 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 299.3333333333333) internal successors, (1796), 6 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:26,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:01:26,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 758 [2023-08-30 05:01:26,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:01:32,480 INFO L130 PetriNetUnfolder]: 28641/42012 cut-off events. [2023-08-30 05:01:32,480 INFO L131 PetriNetUnfolder]: For 48787/48787 co-relation queries the response was YES. [2023-08-30 05:01:32,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129951 conditions, 42012 events. 28641/42012 cut-off events. For 48787/48787 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 269393 event pairs, 27447 based on Foata normal form. 0/42012 useless extension candidates. Maximal degree in co-relation 129920. Up to 41994 conditions per place. [2023-08-30 05:01:32,931 INFO L137 encePairwiseOnDemand]: 754/758 looper letters, 57 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2023-08-30 05:01:32,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 60 transitions, 471 flow [2023-08-30 05:01:32,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:01:32,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:01:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1518 transitions. [2023-08-30 05:01:32,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40052770448548813 [2023-08-30 05:01:32,933 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1518 transitions. [2023-08-30 05:01:32,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1518 transitions. [2023-08-30 05:01:32,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:01:32,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1518 transitions. [2023-08-30 05:01:32,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.6) internal successors, (1518), 5 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:32,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:32,937 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:32,937 INFO L175 Difference]: Start difference. First operand has 94 places, 61 transitions, 357 flow. Second operand 5 states and 1518 transitions. [2023-08-30 05:01:32,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 60 transitions, 471 flow [2023-08-30 05:01:33,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 60 transitions, 460 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:01:33,053 INFO L231 Difference]: Finished difference. Result has 91 places, 60 transitions, 346 flow [2023-08-30 05:01:33,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=346, PETRI_PLACES=91, PETRI_TRANSITIONS=60} [2023-08-30 05:01:33,054 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 26 predicate places. [2023-08-30 05:01:33,054 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 60 transitions, 346 flow [2023-08-30 05:01:33,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 299.3333333333333) internal successors, (1796), 6 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:01:33,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:01:33,055 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:01:33,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-08-30 05:01:33,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:01:33,256 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:01:33,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:01:33,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2008247381, now seen corresponding path program 2 times [2023-08-30 05:01:33,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:01:33,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527577078] [2023-08-30 05:01:33,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:01:33,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:01:33,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:01:33,258 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:01:33,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-08-30 05:01:33,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:01:33,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:01:33,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 05:01:33,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:01:33,803 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:01:33,804 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 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:01:33,880 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 05:01:33,881 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 05:01:33,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:01:33,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 05:01:33,965 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 05:01:33,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-30 05:01:34,066 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 05:01:34,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-08-30 05:01:34,089 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-30 05:01:34,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 05:01:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:01:34,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:01:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:01:37,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:01:37,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527577078] [2023-08-30 05:01:37,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527577078] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:01:37,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:01:37,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2023-08-30 05:01:37,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145822860] [2023-08-30 05:01:37,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:01:37,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 05:01:37,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:01:37,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 05:01:37,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=274, Unknown=1, NotChecked=0, Total=342 [2023-08-30 05:01:39,386 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 [1] [2023-08-30 05:01:41,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:01:44,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:01:46,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:01:51,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:01:54,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:01:56,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:01:58,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:00,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:03,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:05,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:07,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:09,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:11,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:14,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:16,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:19,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:21,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:23,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:26,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:28,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:31,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:33,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:35,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:37,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:40,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:42,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:45,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:50,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:52,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:55,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:02:58,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:03:00,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:03:03,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:03:05,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:03:08,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:03:10,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:03:11,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 758 [2023-08-30 05:03:11,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 60 transitions, 346 flow. Second operand has 19 states, 19 states have (on average 265.10526315789474) internal successors, (5037), 19 states have internal predecessors, (5037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:11,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:11,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 758 [2023-08-30 05:03:11,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:18,928 INFO L130 PetriNetUnfolder]: 33705/49452 cut-off events. [2023-08-30 05:03:18,928 INFO L131 PetriNetUnfolder]: For 64565/64565 co-relation queries the response was YES. [2023-08-30 05:03:19,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147786 conditions, 49452 events. 33705/49452 cut-off events. For 64565/64565 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 326238 event pairs, 5915 based on Foata normal form. 716/50168 useless extension candidates. Maximal degree in co-relation 147754. Up to 9890 conditions per place. [2023-08-30 05:03:19,416 INFO L137 encePairwiseOnDemand]: 752/758 looper letters, 224 selfloop transitions, 10 changer transitions 0/234 dead transitions. [2023-08-30 05:03:19,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 234 transitions, 1662 flow [2023-08-30 05:03:19,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 05:03:19,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 05:03:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2776 transitions. [2023-08-30 05:03:19,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3662269129287599 [2023-08-30 05:03:19,420 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2776 transitions. [2023-08-30 05:03:19,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2776 transitions. [2023-08-30 05:03:19,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:19,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2776 transitions. [2023-08-30 05:03:19,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 277.6) internal successors, (2776), 10 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:19,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 758.0) internal successors, (8338), 11 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:19,427 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 758.0) internal successors, (8338), 11 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:19,427 INFO L175 Difference]: Start difference. First operand has 91 places, 60 transitions, 346 flow. Second operand 10 states and 2776 transitions. [2023-08-30 05:03:19,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 234 transitions, 1662 flow [2023-08-30 05:03:19,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 234 transitions, 1657 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 05:03:19,796 INFO L231 Difference]: Finished difference. Result has 99 places, 62 transitions, 386 flow [2023-08-30 05:03:19,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=386, PETRI_PLACES=99, PETRI_TRANSITIONS=62} [2023-08-30 05:03:19,797 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 34 predicate places. [2023-08-30 05:03:19,797 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 62 transitions, 386 flow [2023-08-30 05:03:19,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 265.10526315789474) internal successors, (5037), 19 states have internal predecessors, (5037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:19,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:19,798 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:19,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:19,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:19,999 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:03:19,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:19,999 INFO L85 PathProgramCache]: Analyzing trace with hash -845087589, now seen corresponding path program 3 times [2023-08-30 05:03:19,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:19,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260236239] [2023-08-30 05:03:20,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:03:20,000 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:20,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:20,001 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:20,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-08-30 05:03:21,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 05:03:21,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:21,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:03:21,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:21,176 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:03:21,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:03:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:03:21,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:21,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260236239] [2023-08-30 05:03:21,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260236239] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:03:21,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:03:21,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-08-30 05:03:21,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020358672] [2023-08-30 05:03:21,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:03:21,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 05:03:21,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 05:03:21,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-30 05:03:21,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 758 [2023-08-30 05:03:21,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 62 transitions, 386 flow. Second operand has 14 states, 14 states have (on average 321.2857142857143) internal successors, (4498), 14 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:21,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:21,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 758 [2023-08-30 05:03:21,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:28,468 INFO L130 PetriNetUnfolder]: 30459/45082 cut-off events. [2023-08-30 05:03:28,468 INFO L131 PetriNetUnfolder]: For 80395/80395 co-relation queries the response was YES. [2023-08-30 05:03:28,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138682 conditions, 45082 events. 30459/45082 cut-off events. For 80395/80395 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 300110 event pairs, 753 based on Foata normal form. 1124/46206 useless extension candidates. Maximal degree in co-relation 138648. Up to 7604 conditions per place. [2023-08-30 05:03:28,881 INFO L137 encePairwiseOnDemand]: 754/758 looper letters, 235 selfloop transitions, 6 changer transitions 0/241 dead transitions. [2023-08-30 05:03:28,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 241 transitions, 1781 flow [2023-08-30 05:03:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:03:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:03:28,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2706 transitions. [2023-08-30 05:03:28,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462401055408971 [2023-08-30 05:03:28,884 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2706 transitions. [2023-08-30 05:03:28,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2706 transitions. [2023-08-30 05:03:28,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:28,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2706 transitions. [2023-08-30 05:03:28,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 338.25) internal successors, (2706), 8 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:28,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:28,891 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:28,891 INFO L175 Difference]: Start difference. First operand has 99 places, 62 transitions, 386 flow. Second operand 8 states and 2706 transitions. [2023-08-30 05:03:28,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 241 transitions, 1781 flow [2023-08-30 05:03:29,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 241 transitions, 1665 flow, removed 14 selfloop flow, removed 13 redundant places. [2023-08-30 05:03:29,129 INFO L231 Difference]: Finished difference. Result has 91 places, 59 transitions, 336 flow [2023-08-30 05:03:29,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=336, PETRI_PLACES=91, PETRI_TRANSITIONS=59} [2023-08-30 05:03:29,129 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 26 predicate places. [2023-08-30 05:03:29,129 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 59 transitions, 336 flow [2023-08-30 05:03:29,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 321.2857142857143) internal successors, (4498), 14 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:29,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:29,130 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:29,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:29,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:29,330 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:03:29,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:29,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1485307128, now seen corresponding path program 3 times [2023-08-30 05:03:29,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:29,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586065152] [2023-08-30 05:03:29,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:03:29,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:29,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:29,332 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:29,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-08-30 05:03:30,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 05:03:30,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:30,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:03:30,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:03:30,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:03:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:03:30,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:30,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586065152] [2023-08-30 05:03:30,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586065152] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:03:30,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:03:30,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-08-30 05:03:30,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359443324] [2023-08-30 05:03:30,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:03:30,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 05:03:30,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:30,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 05:03:30,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-30 05:03:31,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 758 [2023-08-30 05:03:31,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 59 transitions, 336 flow. Second operand has 14 states, 14 states have (on average 321.42857142857144) internal successors, (4500), 14 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:31,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:31,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 758 [2023-08-30 05:03:31,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:37,382 INFO L130 PetriNetUnfolder]: 26843/40146 cut-off events. [2023-08-30 05:03:37,382 INFO L131 PetriNetUnfolder]: For 37520/37520 co-relation queries the response was YES. [2023-08-30 05:03:37,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113800 conditions, 40146 events. 26843/40146 cut-off events. For 37520/37520 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 266763 event pairs, 853 based on Foata normal form. 1320/41466 useless extension candidates. Maximal degree in co-relation 113773. Up to 6786 conditions per place. [2023-08-30 05:03:37,956 INFO L137 encePairwiseOnDemand]: 754/758 looper letters, 204 selfloop transitions, 6 changer transitions 0/210 dead transitions. [2023-08-30 05:03:37,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 210 transitions, 1368 flow [2023-08-30 05:03:37,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:03:37,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:03:37,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2689 transitions. [2023-08-30 05:03:37,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434366754617414 [2023-08-30 05:03:37,960 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2689 transitions. [2023-08-30 05:03:37,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2689 transitions. [2023-08-30 05:03:37,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:37,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2689 transitions. [2023-08-30 05:03:37,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 336.125) internal successors, (2689), 8 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:37,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:37,967 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:37,967 INFO L175 Difference]: Start difference. First operand has 91 places, 59 transitions, 336 flow. Second operand 8 states and 2689 transitions. [2023-08-30 05:03:37,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 210 transitions, 1368 flow [2023-08-30 05:03:38,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 210 transitions, 1276 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-30 05:03:38,307 INFO L231 Difference]: Finished difference. Result has 84 places, 56 transitions, 292 flow [2023-08-30 05:03:38,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=292, PETRI_PLACES=84, PETRI_TRANSITIONS=56} [2023-08-30 05:03:38,307 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 19 predicate places. [2023-08-30 05:03:38,307 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 56 transitions, 292 flow [2023-08-30 05:03:38,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 321.42857142857144) internal successors, (4500), 14 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:38,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:38,308 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:38,324 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 (38)] Ended with exit code 0 [2023-08-30 05:03:38,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:38,509 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:03:38,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:38,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2146159944, now seen corresponding path program 1 times [2023-08-30 05:03:38,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:38,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203410367] [2023-08-30 05:03:38,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:03:38,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:38,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:38,511 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:38,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-08-30 05:03:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:38,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:03:38,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:38,902 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:03:38,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:38,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:38,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203410367] [2023-08-30 05:03:38,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203410367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:38,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:38,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:03:38,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009053039] [2023-08-30 05:03:38,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:38,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:03:38,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:38,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:03:38,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:03:38,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 758 [2023-08-30 05:03:38,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 56 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 323.25) internal successors, (1293), 4 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:38,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:38,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 758 [2023-08-30 05:03:38,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:43,879 INFO L130 PetriNetUnfolder]: 26759/40062 cut-off events. [2023-08-30 05:03:43,879 INFO L131 PetriNetUnfolder]: For 30362/30362 co-relation queries the response was YES. [2023-08-30 05:03:44,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110352 conditions, 40062 events. 26759/40062 cut-off events. For 30362/30362 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 267310 event pairs, 22285 based on Foata normal form. 84/40146 useless extension candidates. Maximal degree in co-relation 110330. Up to 33375 conditions per place. [2023-08-30 05:03:44,354 INFO L137 encePairwiseOnDemand]: 754/758 looper letters, 98 selfloop transitions, 3 changer transitions 4/105 dead transitions. [2023-08-30 05:03:44,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 105 transitions, 710 flow [2023-08-30 05:03:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:03:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:03:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1331 transitions. [2023-08-30 05:03:44,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43898416886543534 [2023-08-30 05:03:44,356 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1331 transitions. [2023-08-30 05:03:44,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1331 transitions. [2023-08-30 05:03:44,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:44,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1331 transitions. [2023-08-30 05:03:44,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 332.75) internal successors, (1331), 4 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:44,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:44,359 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:44,359 INFO L175 Difference]: Start difference. First operand has 84 places, 56 transitions, 292 flow. Second operand 4 states and 1331 transitions. [2023-08-30 05:03:44,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 105 transitions, 710 flow [2023-08-30 05:03:44,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 105 transitions, 677 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:03:44,447 INFO L231 Difference]: Finished difference. Result has 83 places, 57 transitions, 297 flow [2023-08-30 05:03:44,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=83, PETRI_TRANSITIONS=57} [2023-08-30 05:03:44,448 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 18 predicate places. [2023-08-30 05:03:44,448 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 57 transitions, 297 flow [2023-08-30 05:03:44,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 323.25) internal successors, (1293), 4 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:44,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:44,448 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:44,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:44,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:44,649 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:03:44,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:44,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1337720490, now seen corresponding path program 2 times [2023-08-30 05:03:44,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:44,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991570300] [2023-08-30 05:03:44,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:03:44,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:44,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:44,650 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:44,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-08-30 05:03:44,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 05:03:44,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:44,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:03:44,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:03:44,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:44,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991570300] [2023-08-30 05:03:44,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991570300] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:44,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:44,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:03:44,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849213430] [2023-08-30 05:03:44,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:44,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:03:44,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:44,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:03:44,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:03:45,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 758 [2023-08-30 05:03:45,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 57 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 311.1666666666667) internal successors, (1867), 6 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:45,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:45,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 758 [2023-08-30 05:03:45,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:50,235 INFO L130 PetriNetUnfolder]: 27355/40940 cut-off events. [2023-08-30 05:03:50,236 INFO L131 PetriNetUnfolder]: For 28616/28616 co-relation queries the response was YES. [2023-08-30 05:03:50,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115254 conditions, 40940 events. 27355/40940 cut-off events. For 28616/28616 co-relation queries the response was YES. Maximal size of possible extension queue 915. Compared 274290 event pairs, 22201 based on Foata normal form. 66/41006 useless extension candidates. Maximal degree in co-relation 115230. Up to 33339 conditions per place. [2023-08-30 05:03:50,551 INFO L137 encePairwiseOnDemand]: 751/758 looper letters, 129 selfloop transitions, 10 changer transitions 20/159 dead transitions. [2023-08-30 05:03:50,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 159 transitions, 1072 flow [2023-08-30 05:03:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:03:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:03:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2246 transitions. [2023-08-30 05:03:50,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4232943837165473 [2023-08-30 05:03:50,553 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2246 transitions. [2023-08-30 05:03:50,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2246 transitions. [2023-08-30 05:03:50,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:50,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2246 transitions. [2023-08-30 05:03:50,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.85714285714283) internal successors, (2246), 7 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:50,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 758.0) internal successors, (6064), 8 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:50,558 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 758.0) internal successors, (6064), 8 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:50,558 INFO L175 Difference]: Start difference. First operand has 83 places, 57 transitions, 297 flow. Second operand 7 states and 2246 transitions. [2023-08-30 05:03:50,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 159 transitions, 1072 flow [2023-08-30 05:03:50,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 159 transitions, 1048 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 05:03:50,669 INFO L231 Difference]: Finished difference. Result has 92 places, 65 transitions, 373 flow [2023-08-30 05:03:50,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=92, PETRI_TRANSITIONS=65} [2023-08-30 05:03:50,670 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 27 predicate places. [2023-08-30 05:03:50,670 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 65 transitions, 373 flow [2023-08-30 05:03:50,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 311.1666666666667) internal successors, (1867), 6 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:50,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:50,670 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:50,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:50,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:50,873 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:03:50,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:50,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1772894812, now seen corresponding path program 3 times [2023-08-30 05:03:50,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:50,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566798547] [2023-08-30 05:03:50,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:03:50,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:50,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:50,875 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:50,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-08-30 05:03:51,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 05:03:51,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:51,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:03:51,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:51,144 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:03:51,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:51,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:51,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566798547] [2023-08-30 05:03:51,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566798547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:51,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:51,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:03:51,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185839432] [2023-08-30 05:03:51,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:51,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:03:51,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:51,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:03:51,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:03:51,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 758 [2023-08-30 05:03:51,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 65 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:51,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:51,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 758 [2023-08-30 05:03:51,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:56,868 INFO L130 PetriNetUnfolder]: 28250/42147 cut-off events. [2023-08-30 05:03:56,869 INFO L131 PetriNetUnfolder]: For 64819/64819 co-relation queries the response was YES. [2023-08-30 05:03:57,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141569 conditions, 42147 events. 28250/42147 cut-off events. For 64819/64819 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 279814 event pairs, 22372 based on Foata normal form. 438/42585 useless extension candidates. Maximal degree in co-relation 141540. Up to 33874 conditions per place. [2023-08-30 05:03:57,316 INFO L137 encePairwiseOnDemand]: 753/758 looper letters, 126 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2023-08-30 05:03:57,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 131 transitions, 988 flow [2023-08-30 05:03:57,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:03:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:03:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1325 transitions. [2023-08-30 05:03:57,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43700527704485487 [2023-08-30 05:03:57,318 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1325 transitions. [2023-08-30 05:03:57,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1325 transitions. [2023-08-30 05:03:57,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:57,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1325 transitions. [2023-08-30 05:03:57,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 331.25) internal successors, (1325), 4 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:57,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:57,321 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:57,321 INFO L175 Difference]: Start difference. First operand has 92 places, 65 transitions, 373 flow. Second operand 4 states and 1325 transitions. [2023-08-30 05:03:57,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 131 transitions, 988 flow [2023-08-30 05:03:57,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 131 transitions, 957 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-30 05:03:57,509 INFO L231 Difference]: Finished difference. Result has 94 places, 68 transitions, 410 flow [2023-08-30 05:03:57,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=410, PETRI_PLACES=94, PETRI_TRANSITIONS=68} [2023-08-30 05:03:57,509 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 29 predicate places. [2023-08-30 05:03:57,510 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 68 transitions, 410 flow [2023-08-30 05:03:57,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:57,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:57,510 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:57,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:57,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:57,711 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:03:57,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:57,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1702911230, now seen corresponding path program 4 times [2023-08-30 05:03:57,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:57,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759509814] [2023-08-30 05:03:57,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:03:57,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:57,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:57,713 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:57,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-08-30 05:03:58,113 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:03:58,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:58,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:03:58,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:03:58,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:58,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:58,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759509814] [2023-08-30 05:03:58,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759509814] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:58,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:58,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:03:58,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713942207] [2023-08-30 05:03:58,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:58,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:03:58,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:58,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:03:58,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:03:58,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 758 [2023-08-30 05:03:58,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 68 transitions, 410 flow. Second operand has 4 states, 4 states have (on average 322.25) internal successors, (1289), 4 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:58,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:58,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 758 [2023-08-30 05:03:58,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:03,640 INFO L130 PetriNetUnfolder]: 27292/40533 cut-off events. [2023-08-30 05:04:03,640 INFO L131 PetriNetUnfolder]: For 67868/67868 co-relation queries the response was YES. [2023-08-30 05:04:03,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141021 conditions, 40533 events. 27292/40533 cut-off events. For 67868/67868 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 270906 event pairs, 2849 based on Foata normal form. 438/40971 useless extension candidates. Maximal degree in co-relation 140990. Up to 33591 conditions per place. [2023-08-30 05:04:03,970 INFO L137 encePairwiseOnDemand]: 752/758 looper letters, 107 selfloop transitions, 8 changer transitions 2/117 dead transitions. [2023-08-30 05:04:03,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 117 transitions, 917 flow [2023-08-30 05:04:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:04:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:04:03,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1317 transitions. [2023-08-30 05:04:03,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43436675461741425 [2023-08-30 05:04:03,974 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1317 transitions. [2023-08-30 05:04:03,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1317 transitions. [2023-08-30 05:04:03,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:03,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1317 transitions. [2023-08-30 05:04:03,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 329.25) internal successors, (1317), 4 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:03,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:03,977 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 758.0) internal successors, (3790), 5 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:03,977 INFO L175 Difference]: Start difference. First operand has 94 places, 68 transitions, 410 flow. Second operand 4 states and 1317 transitions. [2023-08-30 05:04:03,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 117 transitions, 917 flow [2023-08-30 05:04:04,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 117 transitions, 904 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 05:04:04,137 INFO L231 Difference]: Finished difference. Result has 98 places, 69 transitions, 440 flow [2023-08-30 05:04:04,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=98, PETRI_TRANSITIONS=69} [2023-08-30 05:04:04,137 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 33 predicate places. [2023-08-30 05:04:04,138 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 69 transitions, 440 flow [2023-08-30 05:04:04,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 322.25) internal successors, (1289), 4 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:04,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:04,138 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:04,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-08-30 05:04:04,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:04,339 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:04:04,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:04,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1932985171, now seen corresponding path program 1 times [2023-08-30 05:04:04,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:04,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635229625] [2023-08-30 05:04:04,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:04:04,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:04,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:04,341 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:04,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-08-30 05:04:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:04:04,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:04:04,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:04,805 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:04:04,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:04,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:04,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635229625] [2023-08-30 05:04:04,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635229625] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:04,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:04,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:04:04,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17920416] [2023-08-30 05:04:04,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:04,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:04:04,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:04,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:04:04,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:04:04,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 758 [2023-08-30 05:04:04,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 69 transitions, 440 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:04,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:04,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 758 [2023-08-30 05:04:04,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:10,696 INFO L130 PetriNetUnfolder]: 27281/40559 cut-off events. [2023-08-30 05:04:10,696 INFO L131 PetriNetUnfolder]: For 77494/77494 co-relation queries the response was YES. [2023-08-30 05:04:10,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142065 conditions, 40559 events. 27281/40559 cut-off events. For 77494/77494 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 265160 event pairs, 22966 based on Foata normal form. 53/40612 useless extension candidates. Maximal degree in co-relation 142031. Up to 35670 conditions per place. [2023-08-30 05:04:11,087 INFO L137 encePairwiseOnDemand]: 750/758 looper letters, 113 selfloop transitions, 10 changer transitions 4/127 dead transitions. [2023-08-30 05:04:11,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 127 transitions, 1029 flow [2023-08-30 05:04:11,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:04:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:04:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1601 transitions. [2023-08-30 05:04:11,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224274406332454 [2023-08-30 05:04:11,090 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1601 transitions. [2023-08-30 05:04:11,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1601 transitions. [2023-08-30 05:04:11,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:11,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1601 transitions. [2023-08-30 05:04:11,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.2) internal successors, (1601), 5 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:11,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:11,096 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:11,096 INFO L175 Difference]: Start difference. First operand has 98 places, 69 transitions, 440 flow. Second operand 5 states and 1601 transitions. [2023-08-30 05:04:11,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 127 transitions, 1029 flow [2023-08-30 05:04:11,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 127 transitions, 991 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 05:04:11,333 INFO L231 Difference]: Finished difference. Result has 98 places, 70 transitions, 453 flow [2023-08-30 05:04:11,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=98, PETRI_TRANSITIONS=70} [2023-08-30 05:04:11,334 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 33 predicate places. [2023-08-30 05:04:11,334 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 70 transitions, 453 flow [2023-08-30 05:04:11,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:11,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:11,335 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:11,347 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 (43)] Ended with exit code 0 [2023-08-30 05:04:11,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:11,541 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:04:11,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:11,541 INFO L85 PathProgramCache]: Analyzing trace with hash -774464335, now seen corresponding path program 2 times [2023-08-30 05:04:11,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:11,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657116398] [2023-08-30 05:04:11,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:04:11,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:11,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:11,543 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:11,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-08-30 05:04:11,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 05:04:11,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:11,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:04:11,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:11,932 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-30 05:04:11,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:11,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:11,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657116398] [2023-08-30 05:04:11,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657116398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:11,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:11,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:04:11,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008122756] [2023-08-30 05:04:11,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:11,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:04:11,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:11,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:04:11,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:04:12,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 758 [2023-08-30 05:04:12,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 70 transitions, 453 flow. Second operand has 6 states, 6 states have (on average 311.5) internal successors, (1869), 6 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:12,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:12,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 758 [2023-08-30 05:04:12,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:17,864 INFO L130 PetriNetUnfolder]: 27397/40902 cut-off events. [2023-08-30 05:04:17,864 INFO L131 PetriNetUnfolder]: For 79420/79420 co-relation queries the response was YES. [2023-08-30 05:04:18,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147054 conditions, 40902 events. 27397/40902 cut-off events. For 79420/79420 co-relation queries the response was YES. Maximal size of possible extension queue 915. Compared 269699 event pairs, 21487 based on Foata normal form. 58/40960 useless extension candidates. Maximal degree in co-relation 147021. Up to 33877 conditions per place. [2023-08-30 05:04:18,302 INFO L137 encePairwiseOnDemand]: 750/758 looper letters, 136 selfloop transitions, 14 changer transitions 22/172 dead transitions. [2023-08-30 05:04:18,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 172 transitions, 1365 flow [2023-08-30 05:04:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:04:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:04:18,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2246 transitions. [2023-08-30 05:04:18,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4232943837165473 [2023-08-30 05:04:18,304 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2246 transitions. [2023-08-30 05:04:18,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2246 transitions. [2023-08-30 05:04:18,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:18,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2246 transitions. [2023-08-30 05:04:18,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.85714285714283) internal successors, (2246), 7 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:18,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 758.0) internal successors, (6064), 8 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:18,309 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 758.0) internal successors, (6064), 8 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:18,309 INFO L175 Difference]: Start difference. First operand has 98 places, 70 transitions, 453 flow. Second operand 7 states and 2246 transitions. [2023-08-30 05:04:18,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 172 transitions, 1365 flow [2023-08-30 05:04:18,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 172 transitions, 1329 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 05:04:18,474 INFO L231 Difference]: Finished difference. Result has 106 places, 77 transitions, 542 flow [2023-08-30 05:04:18,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=106, PETRI_TRANSITIONS=77} [2023-08-30 05:04:18,475 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 41 predicate places. [2023-08-30 05:04:18,475 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 77 transitions, 542 flow [2023-08-30 05:04:18,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 311.5) internal successors, (1869), 6 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:18,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:18,476 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:18,483 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 (44)] Ended with exit code 0 [2023-08-30 05:04:18,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:18,681 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:04:18,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:18,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1264076813, now seen corresponding path program 3 times [2023-08-30 05:04:18,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:18,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069074813] [2023-08-30 05:04:18,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:04:18,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:18,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:18,683 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:18,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-08-30 05:04:19,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:04:19,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:19,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:04:19,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:04:19,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:04:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 05:04:19,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:19,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069074813] [2023-08-30 05:04:19,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069074813] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:04:19,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:04:19,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 05:04:19,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270622148] [2023-08-30 05:04:19,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:04:19,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:04:19,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:19,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:04:19,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:04:19,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 758 [2023-08-30 05:04:19,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 77 transitions, 542 flow. Second operand has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:19,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:19,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 758 [2023-08-30 05:04:19,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:25,597 INFO L130 PetriNetUnfolder]: 27322/40653 cut-off events. [2023-08-30 05:04:25,597 INFO L131 PetriNetUnfolder]: For 139702/139702 co-relation queries the response was YES. [2023-08-30 05:04:25,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162836 conditions, 40653 events. 27322/40653 cut-off events. For 139702/139702 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 270577 event pairs, 7022 based on Foata normal form. 111/40764 useless extension candidates. Maximal degree in co-relation 162798. Up to 11684 conditions per place. [2023-08-30 05:04:26,046 INFO L137 encePairwiseOnDemand]: 753/758 looper letters, 219 selfloop transitions, 9 changer transitions 129/357 dead transitions. [2023-08-30 05:04:26,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 357 transitions, 3215 flow [2023-08-30 05:04:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:04:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:04:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2950 transitions. [2023-08-30 05:04:26,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43242450894165935 [2023-08-30 05:04:26,049 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2950 transitions. [2023-08-30 05:04:26,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2950 transitions. [2023-08-30 05:04:26,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:26,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2950 transitions. [2023-08-30 05:04:26,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 327.77777777777777) internal successors, (2950), 9 states have internal predecessors, (2950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:26,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 758.0) internal successors, (7580), 10 states have internal predecessors, (7580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:26,054 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 758.0) internal successors, (7580), 10 states have internal predecessors, (7580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:26,054 INFO L175 Difference]: Start difference. First operand has 106 places, 77 transitions, 542 flow. Second operand 9 states and 2950 transitions. [2023-08-30 05:04:26,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 357 transitions, 3215 flow [2023-08-30 05:04:26,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 357 transitions, 3059 flow, removed 49 selfloop flow, removed 2 redundant places. [2023-08-30 05:04:26,212 INFO L231 Difference]: Finished difference. Result has 117 places, 77 transitions, 558 flow [2023-08-30 05:04:26,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=558, PETRI_PLACES=117, PETRI_TRANSITIONS=77} [2023-08-30 05:04:26,213 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 52 predicate places. [2023-08-30 05:04:26,213 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 77 transitions, 558 flow [2023-08-30 05:04:26,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 317.0) internal successors, (2219), 7 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:26,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:26,213 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:26,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2023-08-30 05:04:26,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:26,414 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:04:26,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:26,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1942417186, now seen corresponding path program 4 times [2023-08-30 05:04:26,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:26,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068454928] [2023-08-30 05:04:26,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:04:26,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:26,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:26,418 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:26,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-08-30 05:04:26,927 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:04:26,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:26,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:04:26,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 05:04:27,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:27,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:27,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068454928] [2023-08-30 05:04:27,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068454928] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:27,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:27,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:04:27,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316201652] [2023-08-30 05:04:27,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:27,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:04:27,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:27,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:04:27,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:04:27,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 758 [2023-08-30 05:04:27,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 77 transitions, 558 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:27,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:27,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 758 [2023-08-30 05:04:27,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:31,836 INFO L130 PetriNetUnfolder]: 20541/30240 cut-off events. [2023-08-30 05:04:31,836 INFO L131 PetriNetUnfolder]: For 124686/124686 co-relation queries the response was YES. [2023-08-30 05:04:32,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132425 conditions, 30240 events. 20541/30240 cut-off events. For 124686/124686 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 184754 event pairs, 15877 based on Foata normal form. 42/30282 useless extension candidates. Maximal degree in co-relation 132381. Up to 24581 conditions per place. [2023-08-30 05:04:32,247 INFO L137 encePairwiseOnDemand]: 751/758 looper letters, 105 selfloop transitions, 11 changer transitions 19/135 dead transitions. [2023-08-30 05:04:32,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 135 transitions, 1241 flow [2023-08-30 05:04:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:04:32,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:04:32,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1604 transitions. [2023-08-30 05:04:32,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42321899736147756 [2023-08-30 05:04:32,250 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1604 transitions. [2023-08-30 05:04:32,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1604 transitions. [2023-08-30 05:04:32,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:32,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1604 transitions. [2023-08-30 05:04:32,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.8) internal successors, (1604), 5 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:32,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:32,254 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:32,255 INFO L175 Difference]: Start difference. First operand has 117 places, 77 transitions, 558 flow. Second operand 5 states and 1604 transitions. [2023-08-30 05:04:32,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 135 transitions, 1241 flow [2023-08-30 05:04:32,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 135 transitions, 1161 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-08-30 05:04:32,517 INFO L231 Difference]: Finished difference. Result has 111 places, 74 transitions, 538 flow [2023-08-30 05:04:32,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=538, PETRI_PLACES=111, PETRI_TRANSITIONS=74} [2023-08-30 05:04:32,517 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 46 predicate places. [2023-08-30 05:04:32,518 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 74 transitions, 538 flow [2023-08-30 05:04:32,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:32,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:32,518 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:32,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2023-08-30 05:04:32,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:32,719 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:04:32,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash -696483112, now seen corresponding path program 5 times [2023-08-30 05:04:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:32,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031079292] [2023-08-30 05:04:32,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:04:32,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:32,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:32,721 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:32,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-08-30 05:04:33,594 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-30 05:04:33,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:33,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:04:33,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-08-30 05:04:33,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:04:34,551 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-08-30 05:04:34,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:34,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031079292] [2023-08-30 05:04:34,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031079292] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:04:34,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:04:34,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-08-30 05:04:34,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619248381] [2023-08-30 05:04:34,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:04:34,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:04:34,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:34,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:04:34,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:04:34,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 758 [2023-08-30 05:04:34,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 74 transitions, 538 flow. Second operand has 10 states, 10 states have (on average 307.7) internal successors, (3077), 10 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:34,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:34,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 758 [2023-08-30 05:04:34,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:39,626 INFO L130 PetriNetUnfolder]: 20351/29930 cut-off events. [2023-08-30 05:04:39,626 INFO L131 PetriNetUnfolder]: For 115247/115247 co-relation queries the response was YES. [2023-08-30 05:04:40,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128097 conditions, 29930 events. 20351/29930 cut-off events. For 115247/115247 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 184813 event pairs, 5815 based on Foata normal form. 38/29968 useless extension candidates. Maximal degree in co-relation 128055. Up to 24983 conditions per place. [2023-08-30 05:04:40,181 INFO L137 encePairwiseOnDemand]: 747/758 looper letters, 159 selfloop transitions, 21 changer transitions 20/200 dead transitions. [2023-08-30 05:04:40,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 200 transitions, 1786 flow [2023-08-30 05:04:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 05:04:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 05:04:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3139 transitions. [2023-08-30 05:04:40,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4141160949868074 [2023-08-30 05:04:40,185 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3139 transitions. [2023-08-30 05:04:40,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3139 transitions. [2023-08-30 05:04:40,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:40,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3139 transitions. [2023-08-30 05:04:40,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 313.9) internal successors, (3139), 10 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:40,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 758.0) internal successors, (8338), 11 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:40,192 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 758.0) internal successors, (8338), 11 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:40,192 INFO L175 Difference]: Start difference. First operand has 111 places, 74 transitions, 538 flow. Second operand 10 states and 3139 transitions. [2023-08-30 05:04:40,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 200 transitions, 1786 flow [2023-08-30 05:04:40,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 200 transitions, 1750 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 05:04:40,504 INFO L231 Difference]: Finished difference. Result has 117 places, 78 transitions, 627 flow [2023-08-30 05:04:40,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=627, PETRI_PLACES=117, PETRI_TRANSITIONS=78} [2023-08-30 05:04:40,504 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 52 predicate places. [2023-08-30 05:04:40,504 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 78 transitions, 627 flow [2023-08-30 05:04:40,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 307.7) internal successors, (3077), 10 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:40,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:40,505 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:40,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2023-08-30 05:04:40,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:40,705 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:04:40,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:40,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1018143039, now seen corresponding path program 1 times [2023-08-30 05:04:40,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:40,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201611259] [2023-08-30 05:04:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:04:40,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:40,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:40,708 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:40,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2023-08-30 05:04:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:04:41,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:04:41,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-08-30 05:04:41,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:41,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:41,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201611259] [2023-08-30 05:04:41,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201611259] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:41,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:41,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:04:41,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769232173] [2023-08-30 05:04:41,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:41,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:04:41,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:41,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:04:41,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:04:41,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 758 [2023-08-30 05:04:41,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 78 transitions, 627 flow. Second operand has 5 states, 5 states have (on average 317.6) internal successors, (1588), 5 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:41,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:41,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 758 [2023-08-30 05:04:41,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:46,179 INFO L130 PetriNetUnfolder]: 21025/30844 cut-off events. [2023-08-30 05:04:46,179 INFO L131 PetriNetUnfolder]: For 137852/137852 co-relation queries the response was YES. [2023-08-30 05:04:46,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136479 conditions, 30844 events. 21025/30844 cut-off events. For 137852/137852 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 185268 event pairs, 15899 based on Foata normal form. 360/31204 useless extension candidates. Maximal degree in co-relation 136434. Up to 24545 conditions per place. [2023-08-30 05:04:46,505 INFO L137 encePairwiseOnDemand]: 752/758 looper letters, 145 selfloop transitions, 16 changer transitions 2/163 dead transitions. [2023-08-30 05:04:46,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 163 transitions, 1534 flow [2023-08-30 05:04:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:04:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:04:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1955 transitions. [2023-08-30 05:04:46,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298592788038698 [2023-08-30 05:04:46,507 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1955 transitions. [2023-08-30 05:04:46,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1955 transitions. [2023-08-30 05:04:46,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:46,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1955 transitions. [2023-08-30 05:04:46,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 325.8333333333333) internal successors, (1955), 6 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:46,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:46,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:46,511 INFO L175 Difference]: Start difference. First operand has 117 places, 78 transitions, 627 flow. Second operand 6 states and 1955 transitions. [2023-08-30 05:04:46,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 163 transitions, 1534 flow [2023-08-30 05:04:47,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 163 transitions, 1472 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-08-30 05:04:47,085 INFO L231 Difference]: Finished difference. Result has 119 places, 83 transitions, 704 flow [2023-08-30 05:04:47,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=704, PETRI_PLACES=119, PETRI_TRANSITIONS=83} [2023-08-30 05:04:47,085 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 54 predicate places. [2023-08-30 05:04:47,085 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 83 transitions, 704 flow [2023-08-30 05:04:47,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 317.6) internal successors, (1588), 5 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:47,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:47,086 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:47,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2023-08-30 05:04:47,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:47,288 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:04:47,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:47,288 INFO L85 PathProgramCache]: Analyzing trace with hash -171053777, now seen corresponding path program 2 times [2023-08-30 05:04:47,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:47,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216819354] [2023-08-30 05:04:47,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:04:47,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:47,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:47,290 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:47,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2023-08-30 05:04:47,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:04:47,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:47,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 05:04:47,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-30 05:04:47,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:04:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-30 05:04:48,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:48,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216819354] [2023-08-30 05:04:48,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216819354] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:04:48,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:04:48,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 05:04:48,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295712203] [2023-08-30 05:04:48,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:04:48,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:04:48,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:48,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:04:48,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:04:48,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 758 [2023-08-30 05:04:48,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 83 transitions, 704 flow. Second operand has 13 states, 13 states have (on average 315.84615384615387) internal successors, (4106), 13 states have internal predecessors, (4106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:48,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:48,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 758 [2023-08-30 05:04:48,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:54,143 INFO L130 PetriNetUnfolder]: 21025/30809 cut-off events. [2023-08-30 05:04:54,143 INFO L131 PetriNetUnfolder]: For 128059/128059 co-relation queries the response was YES. [2023-08-30 05:04:54,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132222 conditions, 30809 events. 21025/30809 cut-off events. For 128059/128059 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 189687 event pairs, 3430 based on Foata normal form. 35/30844 useless extension candidates. Maximal degree in co-relation 132175. Up to 6564 conditions per place. [2023-08-30 05:04:54,511 INFO L137 encePairwiseOnDemand]: 754/758 looper letters, 283 selfloop transitions, 8 changer transitions 47/338 dead transitions. [2023-08-30 05:04:54,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 338 transitions, 3689 flow [2023-08-30 05:04:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:04:54,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:04:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2613 transitions. [2023-08-30 05:04:54,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43090369393139843 [2023-08-30 05:04:54,514 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2613 transitions. [2023-08-30 05:04:54,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2613 transitions. [2023-08-30 05:04:54,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:54,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2613 transitions. [2023-08-30 05:04:54,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 326.625) internal successors, (2613), 8 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:54,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:54,518 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 758.0) internal successors, (6822), 9 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:54,518 INFO L175 Difference]: Start difference. First operand has 119 places, 83 transitions, 704 flow. Second operand 8 states and 2613 transitions. [2023-08-30 05:04:54,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 338 transitions, 3689 flow [2023-08-30 05:04:54,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 338 transitions, 3577 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-08-30 05:04:54,899 INFO L231 Difference]: Finished difference. Result has 127 places, 83 transitions, 710 flow [2023-08-30 05:04:54,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=710, PETRI_PLACES=127, PETRI_TRANSITIONS=83} [2023-08-30 05:04:54,899 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 62 predicate places. [2023-08-30 05:04:54,899 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 83 transitions, 710 flow [2023-08-30 05:04:54,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 315.84615384615387) internal successors, (4106), 13 states have internal predecessors, (4106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:54,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:54,900 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:54,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2023-08-30 05:04:55,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:55,101 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:04:55,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:55,101 INFO L85 PathProgramCache]: Analyzing trace with hash 967447606, now seen corresponding path program 3 times [2023-08-30 05:04:55,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:55,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126422791] [2023-08-30 05:04:55,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:04:55,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:55,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:55,102 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:55,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2023-08-30 05:04:55,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:04:55,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:55,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:04:55,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:55,653 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-08-30 05:04:55,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:55,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:55,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126422791] [2023-08-30 05:04:55,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126422791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:55,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:55,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:04:55,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555951388] [2023-08-30 05:04:55,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:55,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:04:55,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:55,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:04:55,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:04:55,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 758 [2023-08-30 05:04:55,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 83 transitions, 710 flow. Second operand has 5 states, 5 states have (on average 317.6) internal successors, (1588), 5 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:55,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:55,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 758 [2023-08-30 05:04:55,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:00,512 INFO L130 PetriNetUnfolder]: 20646/30205 cut-off events. [2023-08-30 05:05:00,512 INFO L131 PetriNetUnfolder]: For 138259/138259 co-relation queries the response was YES. [2023-08-30 05:05:00,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133594 conditions, 30205 events. 20646/30205 cut-off events. For 138259/138259 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 180923 event pairs, 14159 based on Foata normal form. 320/30525 useless extension candidates. Maximal degree in co-relation 133545. Up to 23547 conditions per place. [2023-08-30 05:05:00,917 INFO L137 encePairwiseOnDemand]: 752/758 looper letters, 146 selfloop transitions, 19 changer transitions 1/166 dead transitions. [2023-08-30 05:05:00,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 166 transitions, 1634 flow [2023-08-30 05:05:00,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:05:00,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:05:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1958 transitions. [2023-08-30 05:05:00,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43051890941073 [2023-08-30 05:05:00,920 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1958 transitions. [2023-08-30 05:05:00,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1958 transitions. [2023-08-30 05:05:00,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:00,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1958 transitions. [2023-08-30 05:05:00,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 326.3333333333333) internal successors, (1958), 6 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:00,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:00,923 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:00,923 INFO L175 Difference]: Start difference. First operand has 127 places, 83 transitions, 710 flow. Second operand 6 states and 1958 transitions. [2023-08-30 05:05:00,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 166 transitions, 1634 flow [2023-08-30 05:05:01,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 166 transitions, 1556 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 05:05:01,388 INFO L231 Difference]: Finished difference. Result has 126 places, 86 transitions, 767 flow [2023-08-30 05:05:01,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=767, PETRI_PLACES=126, PETRI_TRANSITIONS=86} [2023-08-30 05:05:01,389 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 61 predicate places. [2023-08-30 05:05:01,389 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 86 transitions, 767 flow [2023-08-30 05:05:01,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 317.6) internal successors, (1588), 5 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:01,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:01,389 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:01,401 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 (50)] Ended with exit code 0 [2023-08-30 05:05:01,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:01,590 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:05:01,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:01,590 INFO L85 PathProgramCache]: Analyzing trace with hash -870686778, now seen corresponding path program 4 times [2023-08-30 05:05:01,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:01,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725353110] [2023-08-30 05:05:01,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:05:01,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:01,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:01,592 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:01,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2023-08-30 05:05:02,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:05:02,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:05:02,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:05:02,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:02,166 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-08-30 05:05:02,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-08-30 05:05:02,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:02,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725353110] [2023-08-30 05:05:02,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725353110] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:05:02,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:05:02,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-08-30 05:05:02,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028687301] [2023-08-30 05:05:02,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:02,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:05:02,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:02,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:05:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:05:02,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 758 [2023-08-30 05:05:02,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 86 transitions, 767 flow. Second operand has 5 states, 5 states have (on average 318.4) internal successors, (1592), 5 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:02,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:02,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 758 [2023-08-30 05:05:02,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:06,771 INFO L130 PetriNetUnfolder]: 19890/29099 cut-off events. [2023-08-30 05:05:06,771 INFO L131 PetriNetUnfolder]: For 130341/130341 co-relation queries the response was YES. [2023-08-30 05:05:06,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127483 conditions, 29099 events. 19890/29099 cut-off events. For 130341/130341 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 175008 event pairs, 1204 based on Foata normal form. 320/29419 useless extension candidates. Maximal degree in co-relation 127433. Up to 14618 conditions per place. [2023-08-30 05:05:07,054 INFO L137 encePairwiseOnDemand]: 750/758 looper letters, 137 selfloop transitions, 49 changer transitions 3/189 dead transitions. [2023-08-30 05:05:07,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 189 transitions, 1853 flow [2023-08-30 05:05:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:05:07,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:05:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2274 transitions. [2023-08-30 05:05:07,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-08-30 05:05:07,056 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2274 transitions. [2023-08-30 05:05:07,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2274 transitions. [2023-08-30 05:05:07,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:07,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2274 transitions. [2023-08-30 05:05:07,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.85714285714283) internal successors, (2274), 7 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:07,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 758.0) internal successors, (6064), 8 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:07,060 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 758.0) internal successors, (6064), 8 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:07,060 INFO L175 Difference]: Start difference. First operand has 126 places, 86 transitions, 767 flow. Second operand 7 states and 2274 transitions. [2023-08-30 05:05:07,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 189 transitions, 1853 flow [2023-08-30 05:05:07,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 189 transitions, 1819 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 05:05:07,823 INFO L231 Difference]: Finished difference. Result has 130 places, 103 transitions, 985 flow [2023-08-30 05:05:07,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=985, PETRI_PLACES=130, PETRI_TRANSITIONS=103} [2023-08-30 05:05:07,823 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 65 predicate places. [2023-08-30 05:05:07,823 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 103 transitions, 985 flow [2023-08-30 05:05:07,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 318.4) internal successors, (1592), 5 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:07,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:07,824 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:07,838 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 (51)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:08,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:08,029 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:05:08,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:08,030 INFO L85 PathProgramCache]: Analyzing trace with hash 335601190, now seen corresponding path program 5 times [2023-08-30 05:05:08,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:08,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603442035] [2023-08-30 05:05:08,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:05:08,030 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:08,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:08,031 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:08,032 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 (52)] Waiting until timeout for monitored process [2023-08-30 05:05:09,065 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-30 05:05:09,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:05:09,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:05:09,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-08-30 05:05:09,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:09,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:09,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603442035] [2023-08-30 05:05:09,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603442035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:09,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:09,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:05:09,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264525897] [2023-08-30 05:05:09,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:09,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:05:09,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:09,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:05:09,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:05:09,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 758 [2023-08-30 05:05:09,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 103 transitions, 985 flow. Second operand has 5 states, 5 states have (on average 318.6) internal successors, (1593), 5 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:09,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:09,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 758 [2023-08-30 05:05:09,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:13,714 INFO L130 PetriNetUnfolder]: 19331/28134 cut-off events. [2023-08-30 05:05:13,714 INFO L131 PetriNetUnfolder]: For 138666/138666 co-relation queries the response was YES. [2023-08-30 05:05:13,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128642 conditions, 28134 events. 19331/28134 cut-off events. For 138666/138666 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 163310 event pairs, 11918 based on Foata normal form. 34/28168 useless extension candidates. Maximal degree in co-relation 128591. Up to 24156 conditions per place. [2023-08-30 05:05:14,185 INFO L137 encePairwiseOnDemand]: 753/758 looper letters, 115 selfloop transitions, 19 changer transitions 17/151 dead transitions. [2023-08-30 05:05:14,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 151 transitions, 1593 flow [2023-08-30 05:05:14,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:05:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:05:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1634 transitions. [2023-08-30 05:05:14,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43113456464379946 [2023-08-30 05:05:14,187 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1634 transitions. [2023-08-30 05:05:14,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1634 transitions. [2023-08-30 05:05:14,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:14,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1634 transitions. [2023-08-30 05:05:14,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 326.8) internal successors, (1634), 5 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:14,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:14,190 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:14,190 INFO L175 Difference]: Start difference. First operand has 130 places, 103 transitions, 985 flow. Second operand 5 states and 1634 transitions. [2023-08-30 05:05:14,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 151 transitions, 1593 flow [2023-08-30 05:05:14,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 151 transitions, 1495 flow, removed 21 selfloop flow, removed 7 redundant places. [2023-08-30 05:05:14,753 INFO L231 Difference]: Finished difference. Result has 127 places, 101 transitions, 901 flow [2023-08-30 05:05:14,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=901, PETRI_PLACES=127, PETRI_TRANSITIONS=101} [2023-08-30 05:05:14,754 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 62 predicate places. [2023-08-30 05:05:14,754 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 101 transitions, 901 flow [2023-08-30 05:05:14,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 318.6) internal successors, (1593), 5 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:14,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:14,754 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:14,768 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 (52)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:14,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:14,955 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:05:14,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:14,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1301690820, now seen corresponding path program 1 times [2023-08-30 05:05:14,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:14,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670351198] [2023-08-30 05:05:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:14,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:14,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:14,957 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:14,958 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 (53)] Waiting until timeout for monitored process [2023-08-30 05:05:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:15,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:05:15,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 05:05:15,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 05:05:15,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:15,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670351198] [2023-08-30 05:05:15,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670351198] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:05:15,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:05:15,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-08-30 05:05:15,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100247231] [2023-08-30 05:05:15,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:15,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:05:15,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:15,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:05:15,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:05:15,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 758 [2023-08-30 05:05:15,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 101 transitions, 901 flow. Second operand has 5 states, 5 states have (on average 318.4) internal successors, (1592), 5 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:15,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:15,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 758 [2023-08-30 05:05:15,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:20,212 INFO L130 PetriNetUnfolder]: 20419/29678 cut-off events. [2023-08-30 05:05:20,213 INFO L131 PetriNetUnfolder]: For 108385/108385 co-relation queries the response was YES. [2023-08-30 05:05:20,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128446 conditions, 29678 events. 20419/29678 cut-off events. For 108385/108385 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 175569 event pairs, 2892 based on Foata normal form. 490/30168 useless extension candidates. Maximal degree in co-relation 128401. Up to 24009 conditions per place. [2023-08-30 05:05:20,545 INFO L137 encePairwiseOnDemand]: 751/758 looper letters, 154 selfloop transitions, 20 changer transitions 3/177 dead transitions. [2023-08-30 05:05:20,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 177 transitions, 1783 flow [2023-08-30 05:05:20,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:05:20,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:05:20,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1629 transitions. [2023-08-30 05:05:20,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298153034300792 [2023-08-30 05:05:20,547 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1629 transitions. [2023-08-30 05:05:20,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1629 transitions. [2023-08-30 05:05:20,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:20,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1629 transitions. [2023-08-30 05:05:20,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.8) internal successors, (1629), 5 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:20,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:20,551 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 758.0) internal successors, (4548), 6 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:20,551 INFO L175 Difference]: Start difference. First operand has 127 places, 101 transitions, 901 flow. Second operand 5 states and 1629 transitions. [2023-08-30 05:05:20,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 177 transitions, 1783 flow [2023-08-30 05:05:20,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 177 transitions, 1697 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 05:05:20,975 INFO L231 Difference]: Finished difference. Result has 124 places, 105 transitions, 935 flow [2023-08-30 05:05:20,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=935, PETRI_PLACES=124, PETRI_TRANSITIONS=105} [2023-08-30 05:05:20,976 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 59 predicate places. [2023-08-30 05:05:20,976 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 105 transitions, 935 flow [2023-08-30 05:05:20,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 318.4) internal successors, (1592), 5 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:20,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:20,976 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:20,992 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 (53)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:21,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:21,186 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:05:21,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:21,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1490356124, now seen corresponding path program 2 times [2023-08-30 05:05:21,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:21,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140956307] [2023-08-30 05:05:21,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:05:21,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:21,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:21,188 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:21,190 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 (54)] Waiting until timeout for monitored process [2023-08-30 05:05:21,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:05:21,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:05:21,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:05:21,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-08-30 05:05:21,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-08-30 05:05:21,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:21,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140956307] [2023-08-30 05:05:21,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140956307] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:05:21,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:05:21,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-08-30 05:05:21,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741094875] [2023-08-30 05:05:21,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:21,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:05:21,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:21,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:05:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:05:22,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 758 [2023-08-30 05:05:22,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 105 transitions, 935 flow. Second operand has 5 states, 5 states have (on average 317.8) internal successors, (1589), 5 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:22,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:22,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 758 [2023-08-30 05:05:22,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:27,058 INFO L130 PetriNetUnfolder]: 21398/31083 cut-off events. [2023-08-30 05:05:27,058 INFO L131 PetriNetUnfolder]: For 123626/123626 co-relation queries the response was YES. [2023-08-30 05:05:27,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138313 conditions, 31083 events. 21398/31083 cut-off events. For 123626/123626 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 183901 event pairs, 11810 based on Foata normal form. 490/31573 useless extension candidates. Maximal degree in co-relation 138266. Up to 23954 conditions per place. [2023-08-30 05:05:27,353 INFO L137 encePairwiseOnDemand]: 750/758 looper letters, 157 selfloop transitions, 22 changer transitions 1/180 dead transitions. [2023-08-30 05:05:27,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 180 transitions, 1815 flow [2023-08-30 05:05:27,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:05:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:05:27,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1951 transitions. [2023-08-30 05:05:27,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289797713280563 [2023-08-30 05:05:27,355 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1951 transitions. [2023-08-30 05:05:27,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1951 transitions. [2023-08-30 05:05:27,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:27,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1951 transitions. [2023-08-30 05:05:27,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 325.1666666666667) internal successors, (1951), 6 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:27,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:27,359 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:27,359 INFO L175 Difference]: Start difference. First operand has 124 places, 105 transitions, 935 flow. Second operand 6 states and 1951 transitions. [2023-08-30 05:05:27,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 180 transitions, 1815 flow [2023-08-30 05:05:27,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 180 transitions, 1804 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 05:05:27,715 INFO L231 Difference]: Finished difference. Result has 129 places, 106 transitions, 986 flow [2023-08-30 05:05:27,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=986, PETRI_PLACES=129, PETRI_TRANSITIONS=106} [2023-08-30 05:05:27,715 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 64 predicate places. [2023-08-30 05:05:27,715 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 106 transitions, 986 flow [2023-08-30 05:05:27,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 317.8) internal successors, (1589), 5 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:27,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:27,716 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:27,728 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 (54)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:27,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:27,917 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-08-30 05:05:27,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:27,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1314474816, now seen corresponding path program 3 times [2023-08-30 05:05:27,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:27,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285094106] [2023-08-30 05:05:27,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:05:27,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:27,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:27,920 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:27,926 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 (55)] Waiting until timeout for monitored process