./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-node-trans.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-node-trans.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 b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 --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 05:09:50,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:09:50,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:09:50,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:09:50,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:09:50,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:09:50,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:09:50,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:09:50,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:09:50,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:09:50,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:09:50,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:09:50,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:09:50,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:09:50,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:09:50,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:09:50,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:09:50,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:09:50,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:09:50,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:09:50,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:09:50,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:09:50,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:09:50,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:09:50,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:09:50,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:09:50,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:09:50,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:09:50,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:09:50,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:09:50,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:09:50,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:09:50,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:09:50,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:09:50,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:09:50,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:09:50,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:09:50,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:09:50,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:09:50,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:09:50,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:09:50,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:09:50,649 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:09:50,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:09:50,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:09:50,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:09:50,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:09:50,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:09:50,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:09:50,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:09:50,653 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:09:50,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:09:50,654 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:09:50,654 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:09:50,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:09:50,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:09:50,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:09:50,655 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:09:50,655 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:09:50,655 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:09:50,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:09:50,655 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:09:50,656 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:09:50,656 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:09:50,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:09:50,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:09:50,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:09:50,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:09:50,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:09:50,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:09:50,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:09:50,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:09:50,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:09:50,658 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:09:50,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:09:50,658 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:09:50,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:09:50,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:09:50,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:09:50,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:09:51,000 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:09:51,001 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:09:51,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-08-30 05:09:52,290 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:09:52,452 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:09:52,453 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-08-30 05:09:52,460 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68eaacfa5/b1d8f53a9f154808aa115bf38b5e1a9c/FLAGcf515c21f [2023-08-30 05:09:52,482 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68eaacfa5/b1d8f53a9f154808aa115bf38b5e1a9c [2023-08-30 05:09:52,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:09:52,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:09:52,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:09:52,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:09:52,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:09:52,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:09:52" (1/1) ... [2023-08-30 05:09:52,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10674179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:52, skipping insertion in model container [2023-08-30 05:09:52,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:09:52" (1/1) ... [2023-08-30 05:09:52,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:09:52,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:09:52,742 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-node-trans.wvr.c[3945,3958] [2023-08-30 05:09:52,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:09:52,787 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 05:09:52,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33192a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:52, skipping insertion in model container [2023-08-30 05:09:52,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:09:52,790 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 05:09:52,792 INFO L158 Benchmark]: Toolchain (without parser) took 303.45ms. Allocated memory is still 65.0MB. Free memory was 35.6MB in the beginning and 42.6MB in the end (delta: -7.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2023-08-30 05:09:52,793 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory was 30.8MB in the beginning and 30.8MB in the end (delta: 33.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 05:09:52,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.94ms. Allocated memory is still 65.0MB. Free memory was 35.4MB in the beginning and 42.6MB in the end (delta: -7.2MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2023-08-30 05:09:52,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory was 30.8MB in the beginning and 30.8MB in the end (delta: 33.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.94ms. Allocated memory is still 65.0MB. Free memory was 35.4MB in the beginning and 42.6MB in the end (delta: -7.2MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 118]: 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-node-trans.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 b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 --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 05:09:54,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:09:54,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:09:54,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:09:54,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:09:54,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:09:54,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:09:54,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:09:54,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:09:54,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:09:54,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:09:54,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:09:54,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:09:54,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:09:54,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:09:54,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:09:54,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:09:54,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:09:54,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:09:54,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:09:54,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:09:54,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:09:54,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:09:54,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:09:54,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:09:54,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:09:54,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:09:54,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:09:54,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:09:54,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:09:54,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:09:54,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:09:54,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:09:54,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:09:54,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:09:54,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:09:54,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:09:54,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:09:54,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:09:54,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:09:54,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:09:54,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 05:09:54,645 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:09:54,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:09:54,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:09:54,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:09:54,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:09:54,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:09:54,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:09:54,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:09:54,649 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:09:54,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:09:54,650 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:09:54,650 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:09:54,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:09:54,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:09:54,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:09:54,651 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:09:54,651 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:09:54,651 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:09:54,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:09:54,651 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:09:54,651 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 05:09:54,652 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 05:09:54,652 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:09:54,652 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:09:54,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:09:54,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:09:54,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:09:54,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:09:54,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:09:54,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:09:54,653 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 05:09:54,654 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 05:09:54,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:09:54,654 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:09:54,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:09:54,654 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 05:09:54,655 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:09:54,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:09:54,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:09:54,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:09:54,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:09:54,994 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:09:54,995 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:09:54,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-08-30 05:09:56,204 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:09:56,451 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:09:56,452 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-08-30 05:09:56,464 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c35d4a403/d7e90aa8c0684ada9f403906c9632ebb/FLAG8da1ca0f1 [2023-08-30 05:09:56,476 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c35d4a403/d7e90aa8c0684ada9f403906c9632ebb [2023-08-30 05:09:56,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:09:56,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:09:56,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:09:56,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:09:56,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:09:56,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:09:56" (1/1) ... [2023-08-30 05:09:56,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8dbab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:56, skipping insertion in model container [2023-08-30 05:09:56,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:09:56" (1/1) ... [2023-08-30 05:09:56,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:09:56,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:09:56,744 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-node-trans.wvr.c[3945,3958] [2023-08-30 05:09:56,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:09:56,787 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 05:09:56,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:09:56,834 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-node-trans.wvr.c[3945,3958] [2023-08-30 05:09:56,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:09:56,855 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:09:56,896 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-node-trans.wvr.c[3945,3958] [2023-08-30 05:09:56,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:09:56,926 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:09:56,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:56 WrapperNode [2023-08-30 05:09:56,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:09:56,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:09:56,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:09:56,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:09:56,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:56" (1/1) ... [2023-08-30 05:09:56,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:56" (1/1) ... [2023-08-30 05:09:57,011 INFO L138 Inliner]: procedures = 29, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 413 [2023-08-30 05:09:57,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:09:57,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:09:57,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:09:57,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:09:57,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:56" (1/1) ... [2023-08-30 05:09:57,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:56" (1/1) ... [2023-08-30 05:09:57,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:56" (1/1) ... [2023-08-30 05:09:57,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:56" (1/1) ... [2023-08-30 05:09:57,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:56" (1/1) ... [2023-08-30 05:09:57,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:56" (1/1) ... [2023-08-30 05:09:57,114 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:56" (1/1) ... [2023-08-30 05:09:57,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:56" (1/1) ... [2023-08-30 05:09:57,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:09:57,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:09:57,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:09:57,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:09:57,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:56" (1/1) ... [2023-08-30 05:09:57,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:09:57,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:09:57,162 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 05:09:57,188 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 05:09:57,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:09:57,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-08-30 05:09:57,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 05:09:57,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:09:57,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 05:09:57,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:09:57,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:09:57,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:09:57,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:09:57,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 05:09:57,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 05:09:57,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 05:09:57,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:09:57,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:09:57,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-08-30 05:09:57,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:09:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 05:09:57,210 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 05:09:57,393 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:09:57,400 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:09:58,410 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:09:58,435 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:09:58,435 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 05:09:58,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:09:58 BoogieIcfgContainer [2023-08-30 05:09:58,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:09:58,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:09:58,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:09:58,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:09:58,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:09:56" (1/3) ... [2023-08-30 05:09:58,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b11b6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:09:58, skipping insertion in model container [2023-08-30 05:09:58,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:09:56" (2/3) ... [2023-08-30 05:09:58,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b11b6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:09:58, skipping insertion in model container [2023-08-30 05:09:58,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:09:58" (3/3) ... [2023-08-30 05:09:58,448 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2023-08-30 05:09:58,461 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:09:58,461 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2023-08-30 05:09:58,461 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:09:58,615 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 05:09:58,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 516 places, 547 transitions, 1118 flow [2023-08-30 05:09:58,886 INFO L130 PetriNetUnfolder]: 41/544 cut-off events. [2023-08-30 05:09:58,886 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:09:58,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 544 events. 41/544 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1006 event pairs, 0 based on Foata normal form. 0/441 useless extension candidates. Maximal degree in co-relation 450. Up to 2 conditions per place. [2023-08-30 05:09:58,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 516 places, 547 transitions, 1118 flow [2023-08-30 05:09:58,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 509 places, 540 transitions, 1098 flow [2023-08-30 05:09:58,914 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:09:58,929 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 509 places, 540 transitions, 1098 flow [2023-08-30 05:09:58,933 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 509 places, 540 transitions, 1098 flow [2023-08-30 05:09:58,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 509 places, 540 transitions, 1098 flow [2023-08-30 05:09:59,041 INFO L130 PetriNetUnfolder]: 41/540 cut-off events. [2023-08-30 05:09:59,041 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:09:59,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 540 events. 41/540 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 997 event pairs, 0 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 450. Up to 2 conditions per place. [2023-08-30 05:09:59,058 INFO L119 LiptonReduction]: Number of co-enabled transitions 27258 [2023-08-30 05:11:00,361 WARN L222 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 187 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 05:11:02,225 INFO L134 LiptonReduction]: Checked pairs total: 51998 [2023-08-30 05:11:02,226 INFO L136 LiptonReduction]: Total number of compositions: 662 [2023-08-30 05:11:02,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:11:02,242 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;@5a589fae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:11:02,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 101 error locations. [2023-08-30 05:11:02,245 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 05:11:02,245 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:11:02,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:11:02,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 05:11:02,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-30 05:11:02,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:11:02,251 INFO L85 PathProgramCache]: Analyzing trace with hash 68331, now seen corresponding path program 1 times [2023-08-30 05:11:02,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:11:02,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507883093] [2023-08-30 05:11:02,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:11:02,263 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 05:11:02,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:11:02,269 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 05:11:02,280 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 05:11:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:11:02,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 05:11:02,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:11:02,568 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 05:11:02,569 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 05:11:02,622 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 05:11:02,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:11:02,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:11:02,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507883093] [2023-08-30 05:11:02,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507883093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:11:02,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:11:02,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:11:02,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006796078] [2023-08-30 05:11:02,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:11:02,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:11:02,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:11:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:11:02,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:11:03,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1209 [2023-08-30 05:11:03,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 103 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 496.6666666666667) internal successors, (1490), 3 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:03,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:11:03,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1209 [2023-08-30 05:11:03,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:11:08,828 INFO L130 PetriNetUnfolder]: 28355/39551 cut-off events. [2023-08-30 05:11:08,829 INFO L131 PetriNetUnfolder]: For 695/695 co-relation queries the response was YES. [2023-08-30 05:11:08,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79738 conditions, 39551 events. 28355/39551 cut-off events. For 695/695 co-relation queries the response was YES. Maximal size of possible extension queue 2019. Compared 242780 event pairs, 26445 based on Foata normal form. 0/12074 useless extension candidates. Maximal degree in co-relation 76220. Up to 39423 conditions per place. [2023-08-30 05:11:09,089 INFO L137 encePairwiseOnDemand]: 1199/1209 looper letters, 87 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-30 05:11:09,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 94 transitions, 382 flow [2023-08-30 05:11:09,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:11:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:11:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1585 transitions. [2023-08-30 05:11:09,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43700027570995315 [2023-08-30 05:11:09,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1585 transitions. [2023-08-30 05:11:09,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1585 transitions. [2023-08-30 05:11:09,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:11:09,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1585 transitions. [2023-08-30 05:11:09,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 528.3333333333334) internal successors, (1585), 3 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:09,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1209.0) internal successors, (4836), 4 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:09,143 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1209.0) internal successors, (4836), 4 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:09,145 INFO L175 Difference]: Start difference. First operand has 103 places, 103 transitions, 224 flow. Second operand 3 states and 1585 transitions. [2023-08-30 05:11:09,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 94 transitions, 382 flow [2023-08-30 05:11:09,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 94 transitions, 370 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:11:09,166 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 196 flow [2023-08-30 05:11:09,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1209, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2023-08-30 05:11:09,171 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -12 predicate places. [2023-08-30 05:11:09,174 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 196 flow [2023-08-30 05:11:09,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 496.6666666666667) internal successors, (1490), 3 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:09,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:11:09,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 05:11:09,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-30 05:11:09,376 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 05:11:09,376 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-30 05:11:09,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:11:09,377 INFO L85 PathProgramCache]: Analyzing trace with hash 68332, now seen corresponding path program 1 times [2023-08-30 05:11:09,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:11:09,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191044329] [2023-08-30 05:11:09,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:11:09,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:11:09,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:11:09,379 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 05:11:09,391 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 05:11:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:11:09,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 05:11:09,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:11:09,576 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-08-30 05:11:09,577 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 17 treesize of output 44 [2023-08-30 05:11:09,609 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 05:11:09,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:11:09,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:11:09,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191044329] [2023-08-30 05:11:09,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191044329] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:11:09,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:11:09,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:11:09,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522697696] [2023-08-30 05:11:09,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:11:09,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:11:09,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:11:09,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:11:09,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:11:10,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 493 out of 1209 [2023-08-30 05:11:10,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 493.6666666666667) internal successors, (1481), 3 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:10,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:11:10,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 493 of 1209 [2023-08-30 05:11:10,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:11:14,671 INFO L130 PetriNetUnfolder]: 28358/39557 cut-off events. [2023-08-30 05:11:14,671 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-30 05:11:14,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79297 conditions, 39557 events. 28358/39557 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 2019. Compared 242760 event pairs, 26445 based on Foata normal form. 0/12077 useless extension candidates. Maximal degree in co-relation 79291. Up to 39425 conditions per place. [2023-08-30 05:11:14,882 INFO L137 encePairwiseOnDemand]: 1199/1209 looper letters, 87 selfloop transitions, 7 changer transitions 0/100 dead transitions. [2023-08-30 05:11:14,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 100 transitions, 396 flow [2023-08-30 05:11:14,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:11:14,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:11:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1576 transitions. [2023-08-30 05:11:14,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43451888613178935 [2023-08-30 05:11:14,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1576 transitions. [2023-08-30 05:11:14,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1576 transitions. [2023-08-30 05:11:14,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:11:14,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1576 transitions. [2023-08-30 05:11:14,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 525.3333333333334) internal successors, (1576), 3 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:14,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1209.0) internal successors, (4836), 4 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:14,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1209.0) internal successors, (4836), 4 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:14,901 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 196 flow. Second operand 3 states and 1576 transitions. [2023-08-30 05:11:14,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 100 transitions, 396 flow [2023-08-30 05:11:14,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:11:14,904 INFO L231 Difference]: Finished difference. Result has 94 places, 100 transitions, 253 flow [2023-08-30 05:11:14,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1209, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=94, PETRI_TRANSITIONS=100} [2023-08-30 05:11:14,906 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -9 predicate places. [2023-08-30 05:11:14,906 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 100 transitions, 253 flow [2023-08-30 05:11:14,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 493.6666666666667) internal successors, (1481), 3 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:14,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:11:14,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:11:14,924 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 05:11:15,118 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 05:11:15,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-30 05:11:15,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:11:15,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2127197, now seen corresponding path program 1 times [2023-08-30 05:11:15,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:11:15,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741218494] [2023-08-30 05:11:15,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:11:15,120 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 05:11:15,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:11:15,122 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 05:11:15,125 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 05:11:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:11:15,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:11:15,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:11:15,322 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-08-30 05:11:15,322 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 17 treesize of output 44 [2023-08-30 05:11:15,387 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 05:11:15,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:11:15,560 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 05:11:15,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:11:15,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741218494] [2023-08-30 05:11:15,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741218494] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:11:15,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:11:15,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 05:11:15,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065552035] [2023-08-30 05:11:15,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:11:15,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:11:15,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:11:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:11:15,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:11:17,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 1209 [2023-08-30 05:11:17,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 100 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 479.0) internal successors, (2874), 6 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:17,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:11:17,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 1209 [2023-08-30 05:11:17,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:11:23,795 INFO L130 PetriNetUnfolder]: 28367/39575 cut-off events. [2023-08-30 05:11:23,795 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-30 05:11:23,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79381 conditions, 39575 events. 28367/39575 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 2018. Compared 242729 event pairs, 26445 based on Foata normal form. 0/12096 useless extension candidates. Maximal degree in co-relation 79372. Up to 39420 conditions per place. [2023-08-30 05:11:24,031 INFO L137 encePairwiseOnDemand]: 1198/1209 looper letters, 86 selfloop transitions, 26 changer transitions 0/118 dead transitions. [2023-08-30 05:11:24,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 118 transitions, 561 flow [2023-08-30 05:11:24,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:11:24,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:11:24,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2989 transitions. [2023-08-30 05:11:24,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41204852495175076 [2023-08-30 05:11:24,042 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2989 transitions. [2023-08-30 05:11:24,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2989 transitions. [2023-08-30 05:11:24,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:11:24,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2989 transitions. [2023-08-30 05:11:24,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 498.1666666666667) internal successors, (2989), 6 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:24,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1209.0) internal successors, (8463), 7 states have internal predecessors, (8463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:24,069 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1209.0) internal successors, (8463), 7 states have internal predecessors, (8463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:24,072 INFO L175 Difference]: Start difference. First operand has 94 places, 100 transitions, 253 flow. Second operand 6 states and 2989 transitions. [2023-08-30 05:11:24,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 118 transitions, 561 flow [2023-08-30 05:11:24,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 118 transitions, 535 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 05:11:24,078 INFO L231 Difference]: Finished difference. Result has 100 places, 118 transitions, 420 flow [2023-08-30 05:11:24,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1209, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=420, PETRI_PLACES=100, PETRI_TRANSITIONS=118} [2023-08-30 05:11:24,079 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -3 predicate places. [2023-08-30 05:11:24,080 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 118 transitions, 420 flow [2023-08-30 05:11:24,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 479.0) internal successors, (2874), 6 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:24,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:11:24,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:11:24,095 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 05:11:24,292 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 05:11:24,293 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-30 05:11:24,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:11:24,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2046759497, now seen corresponding path program 1 times [2023-08-30 05:11:24,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:11:24,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436882110] [2023-08-30 05:11:24,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:11:24,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:11:24,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:11:24,295 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 05:11:24,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-30 05:11:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:11:24,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 05:11:24,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:11:24,377 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 05:11:24,396 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 05:11:24,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:11:24,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:11:24,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436882110] [2023-08-30 05:11:24,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436882110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:11:24,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:11:24,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:11:24,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080741871] [2023-08-30 05:11:24,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:11:24,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:11:24,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:11:24,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:11:24,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:11:24,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1209 [2023-08-30 05:11:24,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 118 transitions, 420 flow. Second operand has 3 states, 3 states have (on average 497.6666666666667) internal successors, (1493), 3 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:24,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:11:24,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1209 [2023-08-30 05:11:24,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:11:28,658 INFO L130 PetriNetUnfolder]: 28367/39572 cut-off events. [2023-08-30 05:11:28,658 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-08-30 05:11:28,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79422 conditions, 39572 events. 28367/39572 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 2019. Compared 242802 event pairs, 26445 based on Foata normal form. 0/12100 useless extension candidates. Maximal degree in co-relation 79410. Up to 39415 conditions per place. [2023-08-30 05:11:29,073 INFO L137 encePairwiseOnDemand]: 1205/1209 looper letters, 104 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-08-30 05:11:29,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 115 transitions, 632 flow [2023-08-30 05:11:29,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:11:29,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:11:29,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1576 transitions. [2023-08-30 05:11:29,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43451888613178935 [2023-08-30 05:11:29,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1576 transitions. [2023-08-30 05:11:29,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1576 transitions. [2023-08-30 05:11:29,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:11:29,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1576 transitions. [2023-08-30 05:11:29,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 525.3333333333334) internal successors, (1576), 3 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:29,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1209.0) internal successors, (4836), 4 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:29,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1209.0) internal successors, (4836), 4 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:29,095 INFO L175 Difference]: Start difference. First operand has 100 places, 118 transitions, 420 flow. Second operand 3 states and 1576 transitions. [2023-08-30 05:11:29,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 115 transitions, 632 flow [2023-08-30 05:11:29,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 115 transitions, 595 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-30 05:11:29,103 INFO L231 Difference]: Finished difference. Result has 98 places, 115 transitions, 387 flow [2023-08-30 05:11:29,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1209, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=98, PETRI_TRANSITIONS=115} [2023-08-30 05:11:29,105 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -5 predicate places. [2023-08-30 05:11:29,106 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 115 transitions, 387 flow [2023-08-30 05:11:29,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 497.6666666666667) internal successors, (1493), 3 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:29,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:11:29,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:11:29,119 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 (5)] Forceful destruction successful, exit code 0 [2023-08-30 05:11:29,316 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 05:11:29,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-30 05:11:29,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:11:29,317 INFO L85 PathProgramCache]: Analyzing trace with hash 2046759495, now seen corresponding path program 1 times [2023-08-30 05:11:29,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:11:29,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048056550] [2023-08-30 05:11:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:11:29,318 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 05:11:29,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:11:29,319 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 05:11:29,322 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 05:11:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:11:29,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:11:29,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:11:29,437 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 05:11:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:11:29,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:11:29,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:11:29,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048056550] [2023-08-30 05:11:29,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048056550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:11:29,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:11:29,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:11:29,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132162809] [2023-08-30 05:11:29,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:11:29,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:11:29,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:11:29,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:11:29,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:11:30,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 491 out of 1209 [2023-08-30 05:11:30,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 115 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 492.25) internal successors, (1969), 4 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:30,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:11:30,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 491 of 1209 [2023-08-30 05:11:30,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:11:34,103 INFO L130 PetriNetUnfolder]: 28368/39574 cut-off events. [2023-08-30 05:11:34,104 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-08-30 05:11:34,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79413 conditions, 39574 events. 28368/39574 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 2019. Compared 242815 event pairs, 26445 based on Foata normal form. 0/12105 useless extension candidates. Maximal degree in co-relation 79401. Up to 39441 conditions per place. [2023-08-30 05:11:34,288 INFO L137 encePairwiseOnDemand]: 1204/1209 looper letters, 103 selfloop transitions, 8 changer transitions 0/117 dead transitions. [2023-08-30 05:11:34,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 117 transitions, 616 flow [2023-08-30 05:11:34,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:11:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:11:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2052 transitions. [2023-08-30 05:11:34,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42431761786600497 [2023-08-30 05:11:34,293 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2052 transitions. [2023-08-30 05:11:34,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2052 transitions. [2023-08-30 05:11:34,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:11:34,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2052 transitions. [2023-08-30 05:11:34,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 513.0) internal successors, (2052), 4 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:34,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1209.0) internal successors, (6045), 5 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:34,306 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1209.0) internal successors, (6045), 5 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:34,306 INFO L175 Difference]: Start difference. First operand has 98 places, 115 transitions, 387 flow. Second operand 4 states and 2052 transitions. [2023-08-30 05:11:34,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 117 transitions, 616 flow [2023-08-30 05:11:34,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 117 transitions, 611 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:11:34,310 INFO L231 Difference]: Finished difference. Result has 101 places, 117 transitions, 418 flow [2023-08-30 05:11:34,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1209, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=101, PETRI_TRANSITIONS=117} [2023-08-30 05:11:34,311 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -2 predicate places. [2023-08-30 05:11:34,311 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 117 transitions, 418 flow [2023-08-30 05:11:34,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 492.25) internal successors, (1969), 4 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:34,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:11:34,312 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 05:11:34,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-08-30 05:11:34,521 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 05:11:34,522 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-30 05:11:34,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:11:34,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1044340948, now seen corresponding path program 2 times [2023-08-30 05:11:34,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:11:34,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264670939] [2023-08-30 05:11:34,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:11:34,523 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 05:11:34,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:11:34,524 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 05:11:34,528 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 05:11:34,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:11:34,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:11:34,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:11:34,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:11:34,723 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-08-30 05:11:34,724 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 17 treesize of output 44 [2023-08-30 05:11:34,861 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 05:11:34,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:11:35,349 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 05:11:35,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:11:35,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264670939] [2023-08-30 05:11:35,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264670939] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:11:35,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:11:35,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 05:11:35,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361791381] [2023-08-30 05:11:35,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:11:35,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:11:35,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:11:35,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:11:35,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:11:44,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 481 out of 1209 [2023-08-30 05:11:44,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 117 transitions, 418 flow. Second operand has 12 states, 12 states have (on average 482.0) internal successors, (5784), 12 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:44,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:11:44,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 481 of 1209 [2023-08-30 05:11:44,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:11:47,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:11:49,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:11:50,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:11:52,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:11:55,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:11:56,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:11:58,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:12:00,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:12:08,930 INFO L130 PetriNetUnfolder]: 28388/39617 cut-off events. [2023-08-30 05:12:08,931 INFO L131 PetriNetUnfolder]: For 224/224 co-relation queries the response was YES. [2023-08-30 05:12:09,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79604 conditions, 39617 events. 28388/39617 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 2021. Compared 243093 event pairs, 26445 based on Foata normal form. 16/12151 useless extension candidates. Maximal degree in co-relation 79590. Up to 39421 conditions per place. [2023-08-30 05:12:09,145 INFO L137 encePairwiseOnDemand]: 1198/1209 looper letters, 89 selfloop transitions, 65 changer transitions 0/160 dead transitions. [2023-08-30 05:12:09,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 160 transitions, 1008 flow [2023-08-30 05:12:09,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 05:12:09,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 05:12:09,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 7381 transitions. [2023-08-30 05:12:09,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4070030328094844 [2023-08-30 05:12:09,162 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 7381 transitions. [2023-08-30 05:12:09,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 7381 transitions. [2023-08-30 05:12:09,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:12:09,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 7381 transitions. [2023-08-30 05:12:09,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 492.06666666666666) internal successors, (7381), 15 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:09,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1209.0) internal successors, (19344), 16 states have internal predecessors, (19344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:09,210 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1209.0) internal successors, (19344), 16 states have internal predecessors, (19344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:09,210 INFO L175 Difference]: Start difference. First operand has 101 places, 117 transitions, 418 flow. Second operand 15 states and 7381 transitions. [2023-08-30 05:12:09,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 160 transitions, 1008 flow [2023-08-30 05:12:09,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 160 transitions, 987 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 05:12:09,215 INFO L231 Difference]: Finished difference. Result has 121 places, 155 transitions, 880 flow [2023-08-30 05:12:09,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1209, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=880, PETRI_PLACES=121, PETRI_TRANSITIONS=155} [2023-08-30 05:12:09,216 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 18 predicate places. [2023-08-30 05:12:09,216 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 155 transitions, 880 flow [2023-08-30 05:12:09,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 482.0) internal successors, (5784), 12 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:09,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:12:09,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 05:12:09,230 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 05:12:09,430 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 05:12:09,430 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-30 05:12:09,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:12:09,431 INFO L85 PathProgramCache]: Analyzing trace with hash -974956327, now seen corresponding path program 1 times [2023-08-30 05:12:09,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:12:09,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457472603] [2023-08-30 05:12:09,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:12:09,431 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 05:12:09,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:12:09,432 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 05:12:09,433 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 05:12:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:12:09,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 05:12:09,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:12:09,543 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 05:12:09,589 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 05:12:09,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:12:09,779 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 05:12:09,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:12:09,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457472603] [2023-08-30 05:12:09,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457472603] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:12:09,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:12:09,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-08-30 05:12:09,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61347483] [2023-08-30 05:12:09,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:12:09,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:12:09,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:12:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:12:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:12:12,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 476 out of 1209 [2023-08-30 05:12:12,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 155 transitions, 880 flow. Second operand has 7 states, 7 states have (on average 477.7142857142857) internal successors, (3344), 7 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:12,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:12:12,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 476 of 1209 [2023-08-30 05:12:12,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:12:15,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:12:20,048 INFO L130 PetriNetUnfolder]: 28402/39641 cut-off events. [2023-08-30 05:12:20,048 INFO L131 PetriNetUnfolder]: For 289/289 co-relation queries the response was YES. [2023-08-30 05:12:20,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79819 conditions, 39641 events. 28402/39641 cut-off events. For 289/289 co-relation queries the response was YES. Maximal size of possible extension queue 2021. Compared 243347 event pairs, 26445 based on Foata normal form. 0/12160 useless extension candidates. Maximal degree in co-relation 79797. Up to 39423 conditions per place. [2023-08-30 05:12:20,297 INFO L137 encePairwiseOnDemand]: 1196/1209 looper letters, 134 selfloop transitions, 36 changer transitions 0/176 dead transitions. [2023-08-30 05:12:20,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 176 transitions, 1316 flow [2023-08-30 05:12:20,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:12:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:12:20,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3444 transitions. [2023-08-30 05:12:20,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40694789081885857 [2023-08-30 05:12:20,306 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3444 transitions. [2023-08-30 05:12:20,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3444 transitions. [2023-08-30 05:12:20,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:12:20,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3444 transitions. [2023-08-30 05:12:20,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 492.0) internal successors, (3444), 7 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:20,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1209.0) internal successors, (9672), 8 states have internal predecessors, (9672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:20,323 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1209.0) internal successors, (9672), 8 states have internal predecessors, (9672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:20,324 INFO L175 Difference]: Start difference. First operand has 121 places, 155 transitions, 880 flow. Second operand 7 states and 3444 transitions. [2023-08-30 05:12:20,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 176 transitions, 1316 flow [2023-08-30 05:12:20,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 176 transitions, 1165 flow, removed 40 selfloop flow, removed 4 redundant places. [2023-08-30 05:12:20,330 INFO L231 Difference]: Finished difference. Result has 126 places, 176 transitions, 965 flow [2023-08-30 05:12:20,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1209, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=965, PETRI_PLACES=126, PETRI_TRANSITIONS=176} [2023-08-30 05:12:20,331 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 23 predicate places. [2023-08-30 05:12:20,331 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 176 transitions, 965 flow [2023-08-30 05:12:20,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 477.7142857142857) internal successors, (3344), 7 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:20,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:12:20,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:12:20,342 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 (8)] Ended with exit code 0 [2023-08-30 05:12:20,542 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 05:12:20,542 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-30 05:12:20,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:12:20,542 INFO L85 PathProgramCache]: Analyzing trace with hash -158725351, now seen corresponding path program 1 times [2023-08-30 05:12:20,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:12:20,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376403033] [2023-08-30 05:12:20,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:12:20,543 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 05:12:20,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:12:20,545 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 05:12:20,547 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 05:12:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:12:20,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:12:20,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:12:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:12:20,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:12:20,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:12:20,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376403033] [2023-08-30 05:12:20,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376403033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:12:20,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:12:20,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:12:20,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212813494] [2023-08-30 05:12:20,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:12:20,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:12:20,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:12:20,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:12:20,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:12:20,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 499 out of 1209 [2023-08-30 05:12:20,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 176 transitions, 965 flow. Second operand has 3 states, 3 states have (on average 501.3333333333333) internal successors, (1504), 3 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:20,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:12:20,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 499 of 1209 [2023-08-30 05:12:20,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:12:25,208 INFO L130 PetriNetUnfolder]: 28401/39640 cut-off events. [2023-08-30 05:12:25,208 INFO L131 PetriNetUnfolder]: For 385/385 co-relation queries the response was YES. [2023-08-30 05:12:25,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79818 conditions, 39640 events. 28401/39640 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 2021. Compared 243366 event pairs, 26445 based on Foata normal form. 1/12175 useless extension candidates. Maximal degree in co-relation 79792. Up to 39512 conditions per place. [2023-08-30 05:12:25,429 INFO L137 encePairwiseOnDemand]: 1206/1209 looper letters, 167 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2023-08-30 05:12:25,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 175 transitions, 1299 flow [2023-08-30 05:12:25,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:12:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:12:25,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1584 transitions. [2023-08-30 05:12:25,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43672456575682383 [2023-08-30 05:12:25,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1584 transitions. [2023-08-30 05:12:25,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1584 transitions. [2023-08-30 05:12:25,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:12:25,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1584 transitions. [2023-08-30 05:12:25,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 528.0) internal successors, (1584), 3 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 05:12:25,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1209.0) internal successors, (4836), 4 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:25,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1209.0) internal successors, (4836), 4 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:25,442 INFO L175 Difference]: Start difference. First operand has 126 places, 176 transitions, 965 flow. Second operand 3 states and 1584 transitions. [2023-08-30 05:12:25,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 175 transitions, 1299 flow [2023-08-30 05:12:25,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 175 transitions, 1264 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 05:12:25,449 INFO L231 Difference]: Finished difference. Result has 126 places, 175 transitions, 930 flow [2023-08-30 05:12:25,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1209, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=930, PETRI_PLACES=126, PETRI_TRANSITIONS=175} [2023-08-30 05:12:25,450 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 23 predicate places. [2023-08-30 05:12:25,450 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 175 transitions, 930 flow [2023-08-30 05:12:25,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 501.3333333333333) internal successors, (1504), 3 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:25,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:12:25,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:12:25,464 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 05:12:25,660 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 05:12:25,661 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-30 05:12:25,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:12:25,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1245744885, now seen corresponding path program 1 times [2023-08-30 05:12:25,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:12:25,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291406828] [2023-08-30 05:12:25,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:12:25,662 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 05:12:25,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:12:25,663 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 05:12:25,666 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 05:12:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:12:25,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:12:25,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:12:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:12:25,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:12:26,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:12:26,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:12:26,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291406828] [2023-08-30 05:12:26,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291406828] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:12:26,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:12:26,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-08-30 05:12:26,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418337388] [2023-08-30 05:12:26,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:12:26,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:12:26,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:12:26,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:12:26,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:12:27,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 473 out of 1209 [2023-08-30 05:12:27,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 175 transitions, 930 flow. Second operand has 10 states, 10 states have (on average 474.5) internal successors, (4745), 10 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:27,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:12:27,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 473 of 1209 [2023-08-30 05:12:27,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:12:36,999 INFO L130 PetriNetUnfolder]: 56787/79253 cut-off events. [2023-08-30 05:12:36,999 INFO L131 PetriNetUnfolder]: For 742/742 co-relation queries the response was YES. [2023-08-30 05:12:37,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159435 conditions, 79253 events. 56787/79253 cut-off events. For 742/742 co-relation queries the response was YES. Maximal size of possible extension queue 3666. Compared 528938 event pairs, 52890 based on Foata normal form. 4/24325 useless extension candidates. Maximal degree in co-relation 159408. Up to 39492 conditions per place. [2023-08-30 05:12:37,586 INFO L137 encePairwiseOnDemand]: 1200/1209 looper letters, 277 selfloop transitions, 34 changer transitions 0/317 dead transitions. [2023-08-30 05:12:37,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 317 transitions, 2262 flow [2023-08-30 05:12:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:12:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:12:37,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4430 transitions. [2023-08-30 05:12:37,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4071316974542781 [2023-08-30 05:12:37,594 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4430 transitions. [2023-08-30 05:12:37,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4430 transitions. [2023-08-30 05:12:37,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:12:37,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4430 transitions. [2023-08-30 05:12:37,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 492.22222222222223) internal successors, (4430), 9 states have internal predecessors, (4430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:37,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1209.0) internal successors, (12090), 10 states have internal predecessors, (12090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:37,614 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1209.0) internal successors, (12090), 10 states have internal predecessors, (12090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:37,614 INFO L175 Difference]: Start difference. First operand has 126 places, 175 transitions, 930 flow. Second operand 9 states and 4430 transitions. [2023-08-30 05:12:37,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 317 transitions, 2262 flow [2023-08-30 05:12:37,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 317 transitions, 2258 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 05:12:37,624 INFO L231 Difference]: Finished difference. Result has 133 places, 188 transitions, 1124 flow [2023-08-30 05:12:37,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1209, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1124, PETRI_PLACES=133, PETRI_TRANSITIONS=188} [2023-08-30 05:12:37,625 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 30 predicate places. [2023-08-30 05:12:37,626 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 188 transitions, 1124 flow [2023-08-30 05:12:37,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 474.5) internal successors, (4745), 10 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:37,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:12:37,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:12:37,641 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 05:12:37,841 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 05:12:37,842 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-30 05:12:37,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:12:37,842 INFO L85 PathProgramCache]: Analyzing trace with hash -94249993, now seen corresponding path program 1 times [2023-08-30 05:12:37,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:12:37,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449836877] [2023-08-30 05:12:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:12:37,843 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 05:12:37,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:12:37,844 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 05:12:37,846 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 05:12:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:12:37,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:12:37,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:12:38,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 05:12:38,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:12:38,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:12:38,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449836877] [2023-08-30 05:12:38,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449836877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:12:38,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:12:38,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:12:38,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884376081] [2023-08-30 05:12:38,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:12:38,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:12:38,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:12:38,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:12:38,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:12:38,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 497 out of 1209 [2023-08-30 05:12:38,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 188 transitions, 1124 flow. Second operand has 4 states, 4 states have (on average 499.5) internal successors, (1998), 4 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:38,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:12:38,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 497 of 1209 [2023-08-30 05:12:38,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:12:47,139 INFO L130 PetriNetUnfolder]: 56785/79251 cut-off events. [2023-08-30 05:12:47,139 INFO L131 PetriNetUnfolder]: For 851/851 co-relation queries the response was YES. [2023-08-30 05:12:47,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159465 conditions, 79251 events. 56785/79251 cut-off events. For 851/851 co-relation queries the response was YES. Maximal size of possible extension queue 3666. Compared 529214 event pairs, 52890 based on Foata normal form. 2/24321 useless extension candidates. Maximal degree in co-relation 159437. Up to 78984 conditions per place. [2023-08-30 05:12:47,741 INFO L137 encePairwiseOnDemand]: 1204/1209 looper letters, 168 selfloop transitions, 13 changer transitions 0/187 dead transitions. [2023-08-30 05:12:47,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 187 transitions, 1482 flow [2023-08-30 05:12:47,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:12:47,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:12:47,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2076 transitions. [2023-08-30 05:12:47,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292803970223325 [2023-08-30 05:12:47,745 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2076 transitions. [2023-08-30 05:12:47,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2076 transitions. [2023-08-30 05:12:47,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:12:47,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2076 transitions. [2023-08-30 05:12:47,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:47,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1209.0) internal successors, (6045), 5 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:47,753 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1209.0) internal successors, (6045), 5 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:47,753 INFO L175 Difference]: Start difference. First operand has 133 places, 188 transitions, 1124 flow. Second operand 4 states and 2076 transitions. [2023-08-30 05:12:47,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 187 transitions, 1482 flow [2023-08-30 05:12:47,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 187 transitions, 1477 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 05:12:47,761 INFO L231 Difference]: Finished difference. Result has 134 places, 187 transitions, 1141 flow [2023-08-30 05:12:47,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1209, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1141, PETRI_PLACES=134, PETRI_TRANSITIONS=187} [2023-08-30 05:12:47,762 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 31 predicate places. [2023-08-30 05:12:47,762 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 187 transitions, 1141 flow [2023-08-30 05:12:47,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 499.5) internal successors, (1998), 4 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:47,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:12:47,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:12:47,773 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 (11)] Ended with exit code 0 [2023-08-30 05:12:47,973 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 05:12:47,973 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-30 05:12:47,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:12:47,973 INFO L85 PathProgramCache]: Analyzing trace with hash -162197968, now seen corresponding path program 1 times [2023-08-30 05:12:47,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:12:47,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758346467] [2023-08-30 05:12:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:12:47,974 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 05:12:47,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:12:47,975 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 05:12:47,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-30 05:12:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:12:48,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 05:12:48,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:12:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 05:12:48,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:12:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 05:12:48,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:12:48,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758346467] [2023-08-30 05:12:48,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758346467] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:12:48,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:12:48,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2023-08-30 05:12:48,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250261599] [2023-08-30 05:12:48,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:12:48,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 05:12:48,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:12:48,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 05:12:48,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-30 05:12:50,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 473 out of 1209 [2023-08-30 05:12:50,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 187 transitions, 1141 flow. Second operand has 11 states, 11 states have (on average 474.8181818181818) internal successors, (5223), 11 states have internal predecessors, (5223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:12:50,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:12:50,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 473 of 1209 [2023-08-30 05:12:50,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:13:08,941 INFO L130 PetriNetUnfolder]: 113535/158429 cut-off events. [2023-08-30 05:13:08,941 INFO L131 PetriNetUnfolder]: For 1541/1541 co-relation queries the response was YES. [2023-08-30 05:13:09,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318591 conditions, 158429 events. 113535/158429 cut-off events. For 1541/1541 co-relation queries the response was YES. Maximal size of possible extension queue 7137. Compared 1149208 event pairs, 105780 based on Foata normal form. 4/48569 useless extension candidates. Maximal degree in co-relation 318563. Up to 78955 conditions per place. [2023-08-30 05:13:10,172 INFO L137 encePairwiseOnDemand]: 1199/1209 looper letters, 271 selfloop transitions, 44 changer transitions 0/321 dead transitions. [2023-08-30 05:13:10,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 321 transitions, 2548 flow [2023-08-30 05:13:10,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:13:10,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:13:10,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4427 transitions. [2023-08-30 05:13:10,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068559875011488 [2023-08-30 05:13:10,179 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4427 transitions. [2023-08-30 05:13:10,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4427 transitions. [2023-08-30 05:13:10,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:13:10,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4427 transitions. [2023-08-30 05:13:10,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 491.8888888888889) internal successors, (4427), 9 states have internal predecessors, (4427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:13:10,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1209.0) internal successors, (12090), 10 states have internal predecessors, (12090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:13:10,193 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1209.0) internal successors, (12090), 10 states have internal predecessors, (12090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:13:10,193 INFO L175 Difference]: Start difference. First operand has 134 places, 187 transitions, 1141 flow. Second operand 9 states and 4427 transitions. [2023-08-30 05:13:10,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 321 transitions, 2548 flow [2023-08-30 05:13:10,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 321 transitions, 2547 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:13:10,206 INFO L231 Difference]: Finished difference. Result has 141 places, 201 transitions, 1372 flow [2023-08-30 05:13:10,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1209, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1372, PETRI_PLACES=141, PETRI_TRANSITIONS=201} [2023-08-30 05:13:10,208 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 38 predicate places. [2023-08-30 05:13:10,208 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 201 transitions, 1372 flow [2023-08-30 05:13:10,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 474.8181818181818) internal successors, (5223), 11 states have internal predecessors, (5223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:13:10,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:13:10,209 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:13:10,222 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 (12)] Forceful destruction successful, exit code 0 [2023-08-30 05:13:10,422 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 05:13:10,422 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-30 05:13:10,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:13:10,423 INFO L85 PathProgramCache]: Analyzing trace with hash -162261576, now seen corresponding path program 1 times [2023-08-30 05:13:10,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:13:10,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179112377] [2023-08-30 05:13:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:13:10,423 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 05:13:10,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:13:10,425 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 05:13:10,427 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 05:13:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:13:10,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:13:10,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:13:10,568 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 05:13:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 05:13:10,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:13:11,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 05:13:11,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:13:11,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179112377] [2023-08-30 05:13:11,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179112377] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:13:11,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:13:11,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2023-08-30 05:13:11,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112749783] [2023-08-30 05:13:11,013 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:13:11,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 05:13:11,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:13:11,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 05:13:11,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-30 05:13:16,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 479 out of 1209 [2023-08-30 05:13:16,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 201 transitions, 1372 flow. Second operand has 9 states, 9 states have (on average 481.22222222222223) internal successors, (4331), 9 states have internal predecessors, (4331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:13:16,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:13:16,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 479 of 1209 [2023-08-30 05:13:16,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:13:17,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:13:19,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:13:21,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 05:13:22,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []