./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/popl20-commit-2.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/popl20-commit-2.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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --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 06:16:28,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 06:16:28,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 06:16:28,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 06:16:28,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 06:16:28,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 06:16:28,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 06:16:28,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 06:16:28,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 06:16:28,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 06:16:28,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 06:16:28,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 06:16:28,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 06:16:28,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 06:16:28,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 06:16:28,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 06:16:28,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 06:16:28,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 06:16:28,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 06:16:28,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 06:16:28,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 06:16:28,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 06:16:28,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 06:16:28,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 06:16:28,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 06:16:28,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 06:16:28,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 06:16:28,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 06:16:28,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 06:16:28,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 06:16:28,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 06:16:28,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 06:16:28,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 06:16:28,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 06:16:28,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 06:16:28,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 06:16:28,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 06:16:28,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 06:16:28,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 06:16:28,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 06:16:28,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 06:16:28,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 06:16:28,467 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 06:16:28,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 06:16:28,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 06:16:28,469 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 06:16:28,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 06:16:28,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 06:16:28,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 06:16:28,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 06:16:28,470 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 06:16:28,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 06:16:28,471 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 06:16:28,471 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 06:16:28,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 06:16:28,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 06:16:28,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 06:16:28,471 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 06:16:28,472 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 06:16:28,472 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 06:16:28,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 06:16:28,472 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 06:16:28,472 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 06:16:28,472 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 06:16:28,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 06:16:28,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 06:16:28,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 06:16:28,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 06:16:28,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 06:16:28,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 06:16:28,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 06:16:28,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 06:16:28,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 06:16:28,474 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 06:16:28,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 06:16:28,474 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 06:16:28,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 06:16:28,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 06:16:28,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 06:16:28,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 06:16:28,757 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 06:16:28,757 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 06:16:28,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-08-30 06:16:29,769 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 06:16:29,933 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 06:16:29,934 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-08-30 06:16:29,940 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eedfed28/2e6a6cd1394f4c48b80865173511646d/FLAGeb6dacc68 [2023-08-30 06:16:29,951 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eedfed28/2e6a6cd1394f4c48b80865173511646d [2023-08-30 06:16:29,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 06:16:29,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 06:16:29,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 06:16:29,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 06:16:29,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 06:16:29,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:16:29" (1/1) ... [2023-08-30 06:16:29,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d6461b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:29, skipping insertion in model container [2023-08-30 06:16:29,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:16:29" (1/1) ... [2023-08-30 06:16:29,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 06:16:29,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 06:16:30,115 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5846,5859] [2023-08-30 06:16:30,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 06:16:30,129 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 06:16:30,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56605195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:30, skipping insertion in model container [2023-08-30 06:16:30,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 06:16:30,130 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 06:16:30,132 INFO L158 Benchmark]: Toolchain (without parser) took 177.50ms. Allocated memory is still 62.9MB. Free memory was 40.7MB in the beginning and 30.0MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 06:16:30,132 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 52.4MB. Free memory is still 30.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 06:16:30,132 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.02ms. Allocated memory is still 62.9MB. Free memory was 40.5MB in the beginning and 30.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 06:16:30,133 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 52.4MB. Free memory is still 30.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 176.02ms. Allocated memory is still 62.9MB. Free memory was 40.5MB in the beginning and 30.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 195]: 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/popl20-commit-2.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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --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 06:16:31,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 06:16:31,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 06:16:31,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 06:16:31,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 06:16:31,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 06:16:31,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 06:16:31,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 06:16:31,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 06:16:31,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 06:16:31,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 06:16:31,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 06:16:31,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 06:16:31,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 06:16:31,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 06:16:31,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 06:16:31,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 06:16:31,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 06:16:31,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 06:16:31,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 06:16:31,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 06:16:31,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 06:16:31,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 06:16:31,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 06:16:31,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 06:16:31,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 06:16:31,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 06:16:31,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 06:16:31,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 06:16:31,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 06:16:31,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 06:16:31,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 06:16:31,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 06:16:31,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 06:16:31,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 06:16:31,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 06:16:31,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 06:16:31,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 06:16:31,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 06:16:31,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 06:16:31,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 06:16:31,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 06:16:31,542 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 06:16:31,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 06:16:31,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 06:16:31,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 06:16:31,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 06:16:31,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 06:16:31,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 06:16:31,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 06:16:31,545 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 06:16:31,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 06:16:31,546 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 06:16:31,546 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 06:16:31,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 06:16:31,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 06:16:31,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 06:16:31,546 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 06:16:31,546 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 06:16:31,547 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 06:16:31,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 06:16:31,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 06:16:31,547 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 06:16:31,547 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 06:16:31,547 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 06:16:31,547 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 06:16:31,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 06:16:31,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 06:16:31,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 06:16:31,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 06:16:31,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 06:16:31,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 06:16:31,548 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 06:16:31,548 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 06:16:31,549 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 06:16:31,549 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 06:16:31,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 06:16:31,549 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 06:16:31,549 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 06:16:31,549 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 06:16:31,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 06:16:31,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 06:16:31,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 06:16:31,783 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 06:16:31,783 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 06:16:31,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-08-30 06:16:32,698 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 06:16:32,884 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 06:16:32,885 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-08-30 06:16:32,890 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10a5b3d0/dd9bccae45b24be281ed2916662d7c59/FLAG193ba8f80 [2023-08-30 06:16:33,264 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10a5b3d0/dd9bccae45b24be281ed2916662d7c59 [2023-08-30 06:16:33,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 06:16:33,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 06:16:33,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 06:16:33,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 06:16:33,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 06:16:33,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:16:33" (1/1) ... [2023-08-30 06:16:33,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a26155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:33, skipping insertion in model container [2023-08-30 06:16:33,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:16:33" (1/1) ... [2023-08-30 06:16:33,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 06:16:33,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 06:16:33,427 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/popl20-commit-2.wvr.c[5846,5859] [2023-08-30 06:16:33,444 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 06:16:33,458 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 06:16:33,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 06:16:33,494 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/popl20-commit-2.wvr.c[5846,5859] [2023-08-30 06:16:33,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 06:16:33,499 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 06:16:33,528 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/popl20-commit-2.wvr.c[5846,5859] [2023-08-30 06:16:33,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 06:16:33,543 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 06:16:33,543 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 06:16:33,548 INFO L208 MainTranslator]: Completed translation [2023-08-30 06:16:33,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:33 WrapperNode [2023-08-30 06:16:33,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 06:16:33,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 06:16:33,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 06:16:33,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 06:16:33,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:33" (1/1) ... [2023-08-30 06:16:33,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:33" (1/1) ... [2023-08-30 06:16:33,616 INFO L138 Inliner]: procedures = 28, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 460 [2023-08-30 06:16:33,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 06:16:33,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 06:16:33,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 06:16:33,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 06:16:33,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:33" (1/1) ... [2023-08-30 06:16:33,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:33" (1/1) ... [2023-08-30 06:16:33,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:33" (1/1) ... [2023-08-30 06:16:33,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:33" (1/1) ... [2023-08-30 06:16:33,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:33" (1/1) ... [2023-08-30 06:16:33,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:33" (1/1) ... [2023-08-30 06:16:33,675 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:33" (1/1) ... [2023-08-30 06:16:33,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:33" (1/1) ... [2023-08-30 06:16:33,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 06:16:33,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 06:16:33,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 06:16:33,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 06:16:33,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:33" (1/1) ... [2023-08-30 06:16:33,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 06:16:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:16:33,743 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 06:16:33,766 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 06:16:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 06:16:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 06:16:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 06:16:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 06:16:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 06:16:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 06:16:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 06:16:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 06:16:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 06:16:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 06:16:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 06:16:33,792 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 06:16:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 06:16:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 06:16:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 06:16:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 06:16:33,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 06:16:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 06:16:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 06:16:33,795 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 06:16:33,918 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 06:16:33,919 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 06:16:34,662 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 06:16:34,907 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 06:16:34,907 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-30 06:16:34,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:16:34 BoogieIcfgContainer [2023-08-30 06:16:34,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 06:16:34,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 06:16:34,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 06:16:34,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 06:16:34,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:16:33" (1/3) ... [2023-08-30 06:16:34,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d06a8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:16:34, skipping insertion in model container [2023-08-30 06:16:34,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:16:33" (2/3) ... [2023-08-30 06:16:34,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d06a8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:16:34, skipping insertion in model container [2023-08-30 06:16:34,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:16:34" (3/3) ... [2023-08-30 06:16:34,916 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2023-08-30 06:16:34,928 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 06:16:34,928 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2023-08-30 06:16:34,928 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 06:16:35,033 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 06:16:35,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 359 transitions, 750 flow [2023-08-30 06:16:35,188 INFO L130 PetriNetUnfolder]: 25/355 cut-off events. [2023-08-30 06:16:35,188 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 06:16:35,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 355 events. 25/355 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 399 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 301. Up to 2 conditions per place. [2023-08-30 06:16:35,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 347 places, 359 transitions, 750 flow [2023-08-30 06:16:35,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 351 transitions, 726 flow [2023-08-30 06:16:35,207 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 06:16:35,221 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 339 places, 351 transitions, 726 flow [2023-08-30 06:16:35,223 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 339 places, 351 transitions, 726 flow [2023-08-30 06:16:35,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 351 transitions, 726 flow [2023-08-30 06:16:35,260 INFO L130 PetriNetUnfolder]: 25/351 cut-off events. [2023-08-30 06:16:35,261 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 06:16:35,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 351 events. 25/351 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 397 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 301. Up to 2 conditions per place. [2023-08-30 06:16:35,274 INFO L119 LiptonReduction]: Number of co-enabled transitions 6800 [2023-08-30 06:17:13,951 WARN L222 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 153 DAG size of output: 148 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 06:17:19,313 INFO L134 LiptonReduction]: Checked pairs total: 28525 [2023-08-30 06:17:19,314 INFO L136 LiptonReduction]: Total number of compositions: 387 [2023-08-30 06:17:19,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 06:17:19,333 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;@681e0ae8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 06:17:19,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2023-08-30 06:17:19,336 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 06:17:19,336 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 06:17:19,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:17:19,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 06:17:19,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-08-30 06:17:19,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:17:19,340 INFO L85 PathProgramCache]: Analyzing trace with hash 58817, now seen corresponding path program 1 times [2023-08-30 06:17:19,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 06:17:19,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925670964] [2023-08-30 06:17:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:17:19,354 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 06:17:19,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 06:17:19,357 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 06:17:19,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-30 06:17:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:17:19,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 06:17:19,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:17:19,706 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2023-08-30 06:17:19,707 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 4 case distinctions, treesize of input 20 treesize of output 62 [2023-08-30 06:17:19,743 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 06:17:19,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 06:17:19,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 06:17:19,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925670964] [2023-08-30 06:17:19,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925670964] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:17:19,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:17:19,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 06:17:19,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453211078] [2023-08-30 06:17:19,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:17:19,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 06:17:19,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 06:17:19,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 06:17:19,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 06:17:20,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 746 [2023-08-30 06:17:20,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:17:20,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:17:20,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 746 [2023-08-30 06:17:20,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:17:44,892 INFO L130 PetriNetUnfolder]: 229215/293237 cut-off events. [2023-08-30 06:17:44,892 INFO L131 PetriNetUnfolder]: For 2356/2356 co-relation queries the response was YES. [2023-08-30 06:17:45,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591616 conditions, 293237 events. 229215/293237 cut-off events. For 2356/2356 co-relation queries the response was YES. Maximal size of possible extension queue 10272. Compared 1768876 event pairs, 200088 based on Foata normal form. 0/90017 useless extension candidates. Maximal degree in co-relation 283100. Up to 146622 conditions per place. [2023-08-30 06:17:46,355 INFO L137 encePairwiseOnDemand]: 733/746 looper letters, 165 selfloop transitions, 8 changer transitions 0/173 dead transitions. [2023-08-30 06:17:46,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 173 transitions, 740 flow [2023-08-30 06:17:46,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 06:17:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 06:17:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1010 transitions. [2023-08-30 06:17:46,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.451295799821269 [2023-08-30 06:17:46,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1010 transitions. [2023-08-30 06:17:46,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1010 transitions. [2023-08-30 06:17:46,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:17:46,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1010 transitions. [2023-08-30 06:17:46,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:17:46,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 746.0) internal successors, (2984), 4 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:17:46,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 746.0) internal successors, (2984), 4 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:17:46,389 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 204 flow. Second operand 3 states and 1010 transitions. [2023-08-30 06:17:46,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 173 transitions, 740 flow [2023-08-30 06:17:46,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 173 transitions, 708 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 06:17:46,711 INFO L231 Difference]: Finished difference. Result has 90 places, 96 transitions, 254 flow [2023-08-30 06:17:46,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=746, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=90, PETRI_TRANSITIONS=96} [2023-08-30 06:17:46,714 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -5 predicate places. [2023-08-30 06:17:46,714 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 96 transitions, 254 flow [2023-08-30 06:17:46,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:17:46,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:17:46,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 06:17:46,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-08-30 06:17:46,921 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 06:17:46,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-08-30 06:17:46,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:17:46,922 INFO L85 PathProgramCache]: Analyzing trace with hash 58816, now seen corresponding path program 1 times [2023-08-30 06:17:46,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 06:17:46,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604376557] [2023-08-30 06:17:46,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:17:46,923 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 06:17:46,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 06:17:46,924 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 06:17:46,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-30 06:17:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:17:46,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 06:17:46,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:17:47,087 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2023-08-30 06:17:47,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2023-08-30 06:17:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:17:47,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 06:17:47,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 06:17:47,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604376557] [2023-08-30 06:17:47,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604376557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:17:47,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:17:47,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 06:17:47,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450483814] [2023-08-30 06:17:47,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:17:47,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 06:17:47,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 06:17:47,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 06:17:47,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 06:17:47,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 746 [2023-08-30 06:17:47,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:17:47,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:17:47,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 746 [2023-08-30 06:17:47,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:18:09,373 INFO L130 PetriNetUnfolder]: 229215/293229 cut-off events. [2023-08-30 06:18:09,373 INFO L131 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2023-08-30 06:18:09,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588657 conditions, 293229 events. 229215/293229 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 10665. Compared 1771001 event pairs, 200088 based on Foata normal form. 6/90031 useless extension candidates. Maximal degree in co-relation 294303. Up to 293229 conditions per place. [2023-08-30 06:18:10,549 INFO L137 encePairwiseOnDemand]: 741/746 looper letters, 91 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2023-08-30 06:18:10,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 430 flow [2023-08-30 06:18:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 06:18:10,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 06:18:10,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 920 transitions. [2023-08-30 06:18:10,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110813226094727 [2023-08-30 06:18:10,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 920 transitions. [2023-08-30 06:18:10,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 920 transitions. [2023-08-30 06:18:10,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:18:10,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 920 transitions. [2023-08-30 06:18:10,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:18:10,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 746.0) internal successors, (2984), 4 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:18:10,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 746.0) internal successors, (2984), 4 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:18:10,558 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 254 flow. Second operand 3 states and 920 transitions. [2023-08-30 06:18:10,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 430 flow [2023-08-30 06:18:10,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 92 transitions, 414 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 06:18:10,560 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 232 flow [2023-08-30 06:18:10,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=746, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2023-08-30 06:18:10,561 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -9 predicate places. [2023-08-30 06:18:10,561 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 232 flow [2023-08-30 06:18:10,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:18:10,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:18:10,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 06:18:10,575 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 06:18:10,768 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 06:18:10,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-08-30 06:18:10,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:18:10,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1829599, now seen corresponding path program 1 times [2023-08-30 06:18:10,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 06:18:10,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516489205] [2023-08-30 06:18:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:18:10,772 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 06:18:10,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 06:18:10,773 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 06:18:10,775 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 06:18:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:18:10,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 06:18:10,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:18:10,988 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2023-08-30 06:18:10,988 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 4 case distinctions, treesize of input 20 treesize of output 62 [2023-08-30 06:18:11,037 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 06:18:11,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:18:11,167 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 06:18:11,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 06:18:11,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516489205] [2023-08-30 06:18:11,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516489205] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:18:11,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 06:18:11,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 06:18:11,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218090486] [2023-08-30 06:18:11,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 06:18:11,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 06:18:11,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 06:18:11,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 06:18:11,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 06:18:12,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 746 [2023-08-30 06:18:12,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:18:12,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:18:12,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 746 [2023-08-30 06:18:12,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:18:46,727 INFO L130 PetriNetUnfolder]: 343834/439861 cut-off events. [2023-08-30 06:18:46,727 INFO L131 PetriNetUnfolder]: For 294/294 co-relation queries the response was YES. [2023-08-30 06:18:47,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 883019 conditions, 439861 events. 343834/439861 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 15289. Compared 2773060 event pairs, 300132 based on Foata normal form. 0/135038 useless extension candidates. Maximal degree in co-relation 883011. Up to 146621 conditions per place. [2023-08-30 06:18:48,662 INFO L137 encePairwiseOnDemand]: 731/746 looper letters, 230 selfloop transitions, 35 changer transitions 0/265 dead transitions. [2023-08-30 06:18:48,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 265 transitions, 1166 flow [2023-08-30 06:18:48,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 06:18:48,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 06:18:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1819 transitions. [2023-08-30 06:18:48,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4063896336014298 [2023-08-30 06:18:48,669 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1819 transitions. [2023-08-30 06:18:48,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1819 transitions. [2023-08-30 06:18:48,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:18:48,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1819 transitions. [2023-08-30 06:18:48,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 303.1666666666667) internal successors, (1819), 6 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:18:48,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 746.0) internal successors, (5222), 7 states have internal predecessors, (5222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:18:48,679 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 746.0) internal successors, (5222), 7 states have internal predecessors, (5222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:18:48,680 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 232 flow. Second operand 6 states and 1819 transitions. [2023-08-30 06:18:48,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 265 transitions, 1166 flow [2023-08-30 06:18:48,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 265 transitions, 1165 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 06:18:48,683 INFO L231 Difference]: Finished difference. Result has 94 places, 119 transitions, 494 flow [2023-08-30 06:18:48,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=746, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=494, PETRI_PLACES=94, PETRI_TRANSITIONS=119} [2023-08-30 06:18:48,684 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -1 predicate places. [2023-08-30 06:18:48,684 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 119 transitions, 494 flow [2023-08-30 06:18:48,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:18:48,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:18:48,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 06:18:48,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-30 06:18:48,892 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 06:18:48,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-08-30 06:18:48,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:18:48,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1759579705, now seen corresponding path program 1 times [2023-08-30 06:18:48,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 06:18:48,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445285276] [2023-08-30 06:18:48,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:18:48,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 06:18:48,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 06:18:48,895 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 06:18:48,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-30 06:18:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:18:49,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 06:18:49,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:18:49,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 06:18:49,160 INFO L321 Elim1Store]: treesize reduction 186, result has 15.1 percent of original size [2023-08-30 06:18:49,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 73 [2023-08-30 06:18:49,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 06:18:49,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 06:18:49,370 INFO L321 Elim1Store]: treesize reduction 86, result has 28.3 percent of original size [2023-08-30 06:18:49,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 71 [2023-08-30 06:18:49,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 06:18:49,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 06:18:49,554 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 06:18:49,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 68 [2023-08-30 06:18:51,700 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-08-30 06:18:51,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2023-08-30 06:18:51,835 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 06:18:51,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 06:18:51,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 06:18:51,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445285276] [2023-08-30 06:18:51,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445285276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:18:51,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:18:51,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 06:18:51,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843841659] [2023-08-30 06:18:51,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:18:51,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 06:18:51,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 06:18:51,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 06:18:51,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 06:18:56,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 746 [2023-08-30 06:18:56,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 119 transitions, 494 flow. Second operand has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:18:56,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:18:56,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 746 [2023-08-30 06:18:56,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand