./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 02:42:17,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:42:17,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:42:17,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:42:17,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:42:17,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:42:17,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:42:17,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:42:17,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:42:17,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:42:17,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:42:17,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:42:17,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:42:17,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:42:17,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:42:17,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:42:17,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:42:17,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:42:17,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:42:17,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:42:17,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:42:17,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:42:17,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:42:17,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:42:17,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:42:17,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:42:17,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:42:17,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:42:17,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:42:17,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:42:17,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:42:17,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:42:17,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:42:17,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:42:17,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:42:17,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:42:17,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:42:17,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:42:17,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:42:17,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:42:17,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:42:17,777 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 02:42:17,811 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:42:17,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:42:17,812 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:42:17,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:42:17,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:42:17,814 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:42:17,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:42:17,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:42:17,815 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:42:17,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:42:17,815 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:42:17,815 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:42:17,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:42:17,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:42:17,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:42:17,816 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:42:17,816 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:42:17,817 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:42:17,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:42:17,817 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:42:17,817 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:42:17,817 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:42:17,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:42:17,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:42:17,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:42:17,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:42:17,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:42:17,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:42:17,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 02:42:17,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 02:42:17,819 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:42:17,819 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:42:17,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:42:17,820 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:42:17,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:42:18,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:42:18,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:42:18,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:42:18,166 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:42:18,166 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:42:18,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2023-09-01 02:42:19,297 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:42:19,523 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:42:19,527 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2023-09-01 02:42:19,537 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/650fd8502/6146d89c11f848419bcdf4cdba810ede/FLAGba1d2ed0c [2023-09-01 02:42:19,560 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/650fd8502/6146d89c11f848419bcdf4cdba810ede [2023-09-01 02:42:19,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:42:19,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:42:19,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:42:19,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:42:19,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:42:19,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:42:19" (1/1) ... [2023-09-01 02:42:19,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4e8975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:19, skipping insertion in model container [2023-09-01 02:42:19,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:42:19" (1/1) ... [2023-09-01 02:42:19,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:42:19,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:42:19,829 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-bad-commit-2.wvr-bad.c[6687,6700] [2023-09-01 02:42:19,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:42:19,857 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) [2023-09-01 02:42:19,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a2abc64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:19, skipping insertion in model container [2023-09-01 02:42:19,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:42:19,860 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-09-01 02:42:19,861 INFO L158 Benchmark]: Toolchain (without parser) took 296.41ms. Allocated memory is still 73.4MB. Free memory was 50.3MB in the beginning and 39.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 02:42:19,862 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 02:42:19,863 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.17ms. Allocated memory is still 73.4MB. Free memory was 50.2MB in the beginning and 39.5MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 02:42:19,864 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.17ms. Allocated memory is still 73.4MB. Free memory was 50.2MB in the beginning and 39.5MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 215]: 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-bad-commit-2.wvr-bad.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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 02:42:21,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:42:21,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:42:21,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:42:21,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:42:21,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:42:21,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:42:21,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:42:21,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:42:21,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:42:21,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:42:21,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:42:21,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:42:21,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:42:21,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:42:21,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:42:21,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:42:21,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:42:21,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:42:21,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:42:21,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:42:21,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:42:21,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:42:21,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:42:21,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:42:21,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:42:21,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:42:21,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:42:21,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:42:21,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:42:21,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:42:21,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:42:21,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:42:21,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:42:21,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:42:21,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:42:21,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:42:21,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:42:21,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:42:21,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:42:21,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:42:21,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-09-01 02:42:21,793 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:42:21,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:42:21,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:42:21,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:42:21,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:42:21,796 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:42:21,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:42:21,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:42:21,797 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:42:21,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:42:21,799 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:42:21,799 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:42:21,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:42:21,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:42:21,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:42:21,800 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:42:21,800 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:42:21,800 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:42:21,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:42:21,800 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:42:21,801 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 02:42:21,801 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 02:42:21,801 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:42:21,801 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:42:21,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:42:21,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:42:21,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:42:21,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:42:21,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:42:21,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:42:21,803 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 02:42:21,803 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 02:42:21,803 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:42:21,803 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:42:21,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:42:21,804 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 02:42:21,804 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:42:21,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:42:22,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:42:22,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:42:22,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:42:22,144 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:42:22,145 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:42:22,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2023-09-01 02:42:23,298 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:42:23,506 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:42:23,506 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2023-09-01 02:42:23,513 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c02a4c9d/8187cfa2a4834ea98cf0ba07e082634f/FLAG089071a72 [2023-09-01 02:42:23,524 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c02a4c9d/8187cfa2a4834ea98cf0ba07e082634f [2023-09-01 02:42:23,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:42:23,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:42:23,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:42:23,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:42:23,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:42:23,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:42:23" (1/1) ... [2023-09-01 02:42:23,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bad2bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:23, skipping insertion in model container [2023-09-01 02:42:23,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:42:23" (1/1) ... [2023-09-01 02:42:23,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:42:23,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:42:23,711 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-bad-commit-2.wvr-bad.c[6687,6700] [2023-09-01 02:42:23,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:42:23,733 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-09-01 02:42:23,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:42:23,779 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-bad-commit-2.wvr-bad.c[6687,6700] [2023-09-01 02:42:23,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:42:23,797 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 02:42:23,852 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-bad-commit-2.wvr-bad.c[6687,6700] [2023-09-01 02:42:23,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:42:23,876 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:42:23,877 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:42:23,883 INFO L208 MainTranslator]: Completed translation [2023-09-01 02:42:23,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:23 WrapperNode [2023-09-01 02:42:23,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:42:23,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 02:42:23,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 02:42:23,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 02:42:23,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:23" (1/1) ... [2023-09-01 02:42:23,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:23" (1/1) ... [2023-09-01 02:42:23,969 INFO L138 Inliner]: procedures = 28, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 464 [2023-09-01 02:42:23,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 02:42:23,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 02:42:23,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 02:42:23,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 02:42:23,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:23" (1/1) ... [2023-09-01 02:42:23,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:23" (1/1) ... [2023-09-01 02:42:23,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:23" (1/1) ... [2023-09-01 02:42:24,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:23" (1/1) ... [2023-09-01 02:42:24,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:23" (1/1) ... [2023-09-01 02:42:24,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:23" (1/1) ... [2023-09-01 02:42:24,039 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:23" (1/1) ... [2023-09-01 02:42:24,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:23" (1/1) ... [2023-09-01 02:42:24,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 02:42:24,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 02:42:24,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 02:42:24,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 02:42:24,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:23" (1/1) ... [2023-09-01 02:42:24,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:42:24,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:42:24,094 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) [2023-09-01 02:42:24,113 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 [2023-09-01 02:42:24,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 02:42:24,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-09-01 02:42:24,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 02:42:24,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 02:42:24,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 02:42:24,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 02:42:24,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 02:42:24,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 02:42:24,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 02:42:24,141 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 02:42:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 02:42:24,141 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 02:42:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 02:42:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 02:42:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 02:42:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 02:42:24,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 02:42:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 02:42:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 02:42:24,144 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 02:42:24,325 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 02:42:24,327 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 02:42:25,209 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 02:42:25,515 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 02:42:25,516 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-09-01 02:42:25,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:42:25 BoogieIcfgContainer [2023-09-01 02:42:25,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 02:42:25,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 02:42:25,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 02:42:25,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 02:42:25,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:42:23" (1/3) ... [2023-09-01 02:42:25,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4884f880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:42:25, skipping insertion in model container [2023-09-01 02:42:25,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:42:23" (2/3) ... [2023-09-01 02:42:25,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4884f880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:42:25, skipping insertion in model container [2023-09-01 02:42:25,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:42:25" (3/3) ... [2023-09-01 02:42:25,528 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2023-09-01 02:42:25,550 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 02:42:25,550 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2023-09-01 02:42:25,550 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 02:42:25,693 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 02:42:25,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 387 transitions, 806 flow [2023-09-01 02:42:25,907 INFO L130 PetriNetUnfolder]: 37/383 cut-off events. [2023-09-01 02:42:25,908 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:42:25,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 383 events. 37/383 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 475 event pairs, 0 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 325. Up to 8 conditions per place. [2023-09-01 02:42:25,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 387 transitions, 806 flow [2023-09-01 02:42:25,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 355 places, 379 transitions, 782 flow [2023-09-01 02:42:25,933 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 02:42:25,958 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 355 places, 379 transitions, 782 flow [2023-09-01 02:42:25,963 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 355 places, 379 transitions, 782 flow [2023-09-01 02:42:25,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 379 transitions, 782 flow [2023-09-01 02:42:26,039 INFO L130 PetriNetUnfolder]: 37/379 cut-off events. [2023-09-01 02:42:26,040 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:42:26,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 379 events. 37/379 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 480 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 325. Up to 8 conditions per place. [2023-09-01 02:42:26,051 INFO L119 LiptonReduction]: Number of co-enabled transitions 10736 [2023-09-01 02:43:13,441 WARN L222 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 166 DAG size of output: 163 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 02:43:16,367 INFO L134 LiptonReduction]: Checked pairs total: 13873 [2023-09-01 02:43:16,368 INFO L136 LiptonReduction]: Total number of compositions: 450 [2023-09-01 02:43:16,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 02:43:16,384 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;@1b4dfeea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 02:43:16,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2023-09-01 02:43:16,387 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 02:43:16,387 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:43:16,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:43:16,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 02:43:16,388 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-09-01 02:43:16,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:43:16,393 INFO L85 PathProgramCache]: Analyzing trace with hash 62711, now seen corresponding path program 1 times [2023-09-01 02:43:16,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:43:16,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768430168] [2023-09-01 02:43:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:43:16,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:43:16,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:43:16,413 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) [2023-09-01 02:43:16,421 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 [2023-09-01 02:43:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:43:16,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 02:43:16,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:43:16,831 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2023-09-01 02:43:16,832 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 [2023-09-01 02:43:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:43:16,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 02:43:16,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:43:16,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768430168] [2023-09-01 02:43:16,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768430168] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:43:16,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:43:16,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:43:16,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210454846] [2023-09-01 02:43:16,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:43:16,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:43:16,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:43:16,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:43:16,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:43:17,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 837 [2023-09-01 02:43:17,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:17,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:43:17,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 837 [2023-09-01 02:43:17,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:43:37,202 INFO L130 PetriNetUnfolder]: 110089/141191 cut-off events. [2023-09-01 02:43:37,203 INFO L131 PetriNetUnfolder]: For 1264/1264 co-relation queries the response was YES. [2023-09-01 02:43:37,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285318 conditions, 141191 events. 110089/141191 cut-off events. For 1264/1264 co-relation queries the response was YES. Maximal size of possible extension queue 10460. Compared 831614 event pairs, 93490 based on Foata normal form. 0/26095 useless extension candidates. Maximal degree in co-relation 134484. Up to 70599 conditions per place. [2023-09-01 02:43:38,069 INFO L137 encePairwiseOnDemand]: 824/837 looper letters, 149 selfloop transitions, 8 changer transitions 0/157 dead transitions. [2023-09-01 02:43:38,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 157 transitions, 676 flow [2023-09-01 02:43:38,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:43:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:43:38,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1078 transitions. [2023-09-01 02:43:38,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42931103146156907 [2023-09-01 02:43:38,093 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1078 transitions. [2023-09-01 02:43:38,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1078 transitions. [2023-09-01 02:43:38,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:43:38,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1078 transitions. [2023-09-01 02:43:38,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 359.3333333333333) internal successors, (1078), 3 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:38,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 837.0) internal successors, (3348), 4 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:38,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 837.0) internal successors, (3348), 4 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:38,115 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 188 flow. Second operand 3 states and 1078 transitions. [2023-09-01 02:43:38,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 157 transitions, 676 flow [2023-09-01 02:43:38,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 157 transitions, 644 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 02:43:38,346 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 238 flow [2023-09-01 02:43:38,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2023-09-01 02:43:38,351 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -5 predicate places. [2023-09-01 02:43:38,352 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 238 flow [2023-09-01 02:43:38,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:38,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:43:38,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 02:43:38,365 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 [2023-09-01 02:43:38,564 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 [2023-09-01 02:43:38,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-09-01 02:43:38,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:43:38,565 INFO L85 PathProgramCache]: Analyzing trace with hash 62712, now seen corresponding path program 1 times [2023-09-01 02:43:38,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:43:38,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746403714] [2023-09-01 02:43:38,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:43:38,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:43:38,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:43:38,569 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) [2023-09-01 02:43:38,572 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 [2023-09-01 02:43:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:43:38,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 02:43:38,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:43:38,770 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2023-09-01 02:43:38,771 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 [2023-09-01 02:43:38,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:43:38,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 02:43:38,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:43:38,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746403714] [2023-09-01 02:43:38,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746403714] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:43:38,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:43:38,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:43:38,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598722259] [2023-09-01 02:43:38,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:43:38,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:43:38,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:43:38,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:43:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:43:38,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 837 [2023-09-01 02:43:38,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:38,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:43:38,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 837 [2023-09-01 02:43:38,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:43:56,053 INFO L130 PetriNetUnfolder]: 110089/141183 cut-off events. [2023-09-01 02:43:56,054 INFO L131 PetriNetUnfolder]: For 360/360 co-relation queries the response was YES. [2023-09-01 02:43:56,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283603 conditions, 141183 events. 110089/141183 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 10460. Compared 832322 event pairs, 93490 based on Foata normal form. 6/26109 useless extension candidates. Maximal degree in co-relation 141776. Up to 141183 conditions per place. [2023-09-01 02:43:56,735 INFO L137 encePairwiseOnDemand]: 832/837 looper letters, 83 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2023-09-01 02:43:56,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 84 transitions, 398 flow [2023-09-01 02:43:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:43:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:43:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 996 transitions. [2023-09-01 02:43:56,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3966547192353644 [2023-09-01 02:43:56,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 996 transitions. [2023-09-01 02:43:56,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 996 transitions. [2023-09-01 02:43:56,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:43:56,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 996 transitions. [2023-09-01 02:43:56,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:56,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 837.0) internal successors, (3348), 4 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:56,750 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 837.0) internal successors, (3348), 4 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:56,750 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 238 flow. Second operand 3 states and 996 transitions. [2023-09-01 02:43:56,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 84 transitions, 398 flow [2023-09-01 02:43:56,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 02:43:56,755 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 216 flow [2023-09-01 02:43:56,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2023-09-01 02:43:56,758 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -9 predicate places. [2023-09-01 02:43:56,758 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 216 flow [2023-09-01 02:43:56,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:56,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:43:56,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:43:56,773 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 [2023-09-01 02:43:56,970 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 [2023-09-01 02:43:56,970 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-09-01 02:43:56,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:43:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1951231, now seen corresponding path program 1 times [2023-09-01 02:43:56,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:43:56,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703493761] [2023-09-01 02:43:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:43:56,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:43:56,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:43:56,973 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) [2023-09-01 02:43:56,976 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 [2023-09-01 02:43:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:43:57,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 02:43:57,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:43:57,241 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2023-09-01 02:43:57,242 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 [2023-09-01 02:43:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:43:57,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:43:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:43:57,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:43:57,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703493761] [2023-09-01 02:43:57,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703493761] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:43:57,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 02:43:57,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-09-01 02:43:57,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798338934] [2023-09-01 02:43:57,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 02:43:57,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:43:57,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:43:57,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:43:57,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:43:58,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 837 [2023-09-01 02:43:58,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:58,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:43:58,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 837 [2023-09-01 02:43:58,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:44:25,389 INFO L130 PetriNetUnfolder]: 165145/211792 cut-off events. [2023-09-01 02:44:25,390 INFO L131 PetriNetUnfolder]: For 540/540 co-relation queries the response was YES. [2023-09-01 02:44:25,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425438 conditions, 211792 events. 165145/211792 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 11869. Compared 1270774 event pairs, 140235 based on Foata normal form. 0/39155 useless extension candidates. Maximal degree in co-relation 425430. Up to 70598 conditions per place. [2023-09-01 02:44:26,338 INFO L137 encePairwiseOnDemand]: 822/837 looper letters, 206 selfloop transitions, 35 changer transitions 0/241 dead transitions. [2023-09-01 02:44:26,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 241 transitions, 1070 flow [2023-09-01 02:44:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 02:44:26,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 02:44:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1963 transitions. [2023-09-01 02:44:26,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3908801274392672 [2023-09-01 02:44:26,345 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1963 transitions. [2023-09-01 02:44:26,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1963 transitions. [2023-09-01 02:44:26,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:44:26,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1963 transitions. [2023-09-01 02:44:26,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 327.1666666666667) internal successors, (1963), 6 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:44:26,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 837.0) internal successors, (5859), 7 states have internal predecessors, (5859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:44:26,362 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 837.0) internal successors, (5859), 7 states have internal predecessors, (5859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:44:26,362 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 216 flow. Second operand 6 states and 1963 transitions. [2023-09-01 02:44:26,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 241 transitions, 1070 flow [2023-09-01 02:44:26,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 241 transitions, 1069 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:44:26,367 INFO L231 Difference]: Finished difference. Result has 86 places, 111 transitions, 478 flow [2023-09-01 02:44:26,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=478, PETRI_PLACES=86, PETRI_TRANSITIONS=111} [2023-09-01 02:44:26,369 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -1 predicate places. [2023-09-01 02:44:26,369 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 111 transitions, 478 flow [2023-09-01 02:44:26,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:44:26,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:44:26,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:44:26,383 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 [2023-09-01 02:44:26,576 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 [2023-09-01 02:44:26,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-09-01 02:44:26,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:44:26,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1876965082, now seen corresponding path program 1 times [2023-09-01 02:44:26,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:44:26,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197306431] [2023-09-01 02:44:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:44:26,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:44:26,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:44:26,579 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) [2023-09-01 02:44:26,580 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 [2023-09-01 02:44:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:44:26,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 34 conjunts are in the unsatisfiable core [2023-09-01 02:44:26,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:44:26,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:26,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:26,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:26,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:26,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:26,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:26,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:26,984 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2023-09-01 02:44:26,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2023-09-01 02:44:27,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:27,157 INFO L321 Elim1Store]: treesize reduction 186, result has 15.1 percent of original size [2023-09-01 02:44:27,157 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 [2023-09-01 02:44:27,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:27,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-09-01 02:44:27,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:27,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:27,505 INFO L321 Elim1Store]: treesize reduction 86, result has 28.3 percent of original size [2023-09-01 02:44:27,506 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 [2023-09-01 02:44:27,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:27,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-09-01 02:44:27,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:27,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:27,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:27,948 INFO L321 Elim1Store]: treesize reduction 108, result has 29.4 percent of original size [2023-09-01 02:44:27,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 87 [2023-09-01 02:44:28,347 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 02:44:28,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-09-01 02:44:28,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:28,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:28,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:28,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:44:28,524 INFO L321 Elim1Store]: treesize reduction 50, result has 29.6 percent of original size [2023-09-01 02:44:28,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 48 treesize of output 54 [2023-09-01 02:44:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:44:28,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 02:44:28,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:44:28,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197306431] [2023-09-01 02:44:28,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197306431] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:44:28,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:44:28,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 02:44:28,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399433120] [2023-09-01 02:44:28,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:44:28,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:44:28,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:44:28,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:44:28,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:44:32,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 02:44:35,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 02:44:38,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 02:44:40,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 02:44:44,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 02:44:50,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 02:44:53,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 02:44:54,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 837 [2023-09-01 02:44:54,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 111 transitions, 478 flow. Second operand has 6 states, 6 states have (on average 294.8333333333333) internal successors, (1769), 6 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:44:54,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:44:54,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 837 [2023-09-01 02:44:54,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:45:11,827 INFO L130 PetriNetUnfolder]: 92565/121062 cut-off events. [2023-09-01 02:45:11,827 INFO L131 PetriNetUnfolder]: For 550/550 co-relation queries the response was YES. [2023-09-01 02:45:12,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244061 conditions, 121062 events. 92565/121062 cut-off events. For 550/550 co-relation queries the response was YES. Maximal size of possible extension queue 7321. Compared 729224 event pairs, 78027 based on Foata normal form. 0/28803 useless extension candidates. Maximal degree in co-relation 244048. Up to 121062 conditions per place. [2023-09-01 02:45:12,403 INFO L137 encePairwiseOnDemand]: 832/837 looper letters, 102 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2023-09-01 02:45:12,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 103 transitions, 644 flow [2023-09-01 02:45:12,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:45:12,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:45:12,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 959 transitions. [2023-09-01 02:45:12,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819195539625647 [2023-09-01 02:45:12,409 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 959 transitions. [2023-09-01 02:45:12,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 959 transitions. [2023-09-01 02:45:12,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:45:12,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 959 transitions. [2023-09-01 02:45:12,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:45:12,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 837.0) internal successors, (3348), 4 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:45:12,417 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 837.0) internal successors, (3348), 4 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:45:12,418 INFO L175 Difference]: Start difference. First operand has 86 places, 111 transitions, 478 flow. Second operand 3 states and 959 transitions. [2023-09-01 02:45:12,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 103 transitions, 644 flow [2023-09-01 02:45:12,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 103 transitions, 603 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-09-01 02:45:12,421 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 399 flow [2023-09-01 02:45:12,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=399, PETRI_PLACES=83, PETRI_TRANSITIONS=103} [2023-09-01 02:45:12,422 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -4 predicate places. [2023-09-01 02:45:12,422 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 103 transitions, 399 flow [2023-09-01 02:45:12,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 294.8333333333333) internal successors, (1769), 6 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:45:12,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:45:12,424 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 02:45:12,441 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 [2023-09-01 02:45:12,636 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 [2023-09-01 02:45:12,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-09-01 02:45:12,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:45:12,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1993279753, now seen corresponding path program 2 times [2023-09-01 02:45:12,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:45:12,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123349106] [2023-09-01 02:45:12,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:45:12,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:45:12,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:45:12,640 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) [2023-09-01 02:45:12,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-09-01 02:45:12,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:45:12,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:45:12,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 02:45:12,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:45:12,888 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2023-09-01 02:45:12,889 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 [2023-09-01 02:45:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:45:13,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:45:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:45:13,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:45:13,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123349106] [2023-09-01 02:45:13,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123349106] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:45:13,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 02:45:13,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-09-01 02:45:13,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397771273] [2023-09-01 02:45:13,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 02:45:13,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 02:45:13,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:45:13,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 02:45:13,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-09-01 02:45:19,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 837 [2023-09-01 02:45:19,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 103 transitions, 399 flow. Second operand has 12 states, 12 states have (on average 290.0) internal successors, (3480), 12 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:45:19,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:45:19,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 837 [2023-09-01 02:45:19,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:45:22,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:24,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:25,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:28,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:30,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:32,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:34,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:35,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:37,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:39,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:42,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:44,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:47,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:48,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:45:50,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 02:46:50,246 INFO L130 PetriNetUnfolder]: 308525/403484 cut-off events. [2023-09-01 02:46:50,246 INFO L131 PetriNetUnfolder]: For 1887/1887 co-relation queries the response was YES. [2023-09-01 02:46:50,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813203 conditions, 403484 events. 308525/403484 cut-off events. For 1887/1887 co-relation queries the response was YES. Maximal size of possible extension queue 10443. Compared 2582361 event pairs, 260090 based on Foata normal form. 23/95966 useless extension candidates. Maximal degree in co-relation 813189. Up to 40374 conditions per place. [2023-09-01 02:46:52,220 INFO L137 encePairwiseOnDemand]: 824/837 looper letters, 622 selfloop transitions, 72 changer transitions 0/694 dead transitions. [2023-09-01 02:46:52,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 694 transitions, 3249 flow [2023-09-01 02:46:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 02:46:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 02:46:52,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 5052 transitions. [2023-09-01 02:46:52,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.402389486260454 [2023-09-01 02:46:52,234 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 5052 transitions. [2023-09-01 02:46:52,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 5052 transitions. [2023-09-01 02:46:52,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:46:52,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 5052 transitions. [2023-09-01 02:46:52,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 336.8) internal successors, (5052), 15 states have internal predecessors, (5052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:46:52,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 837.0) internal successors, (13392), 16 states have internal predecessors, (13392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:46:52,263 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 837.0) internal successors, (13392), 16 states have internal predecessors, (13392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:46:52,263 INFO L175 Difference]: Start difference. First operand has 83 places, 103 transitions, 399 flow. Second operand 15 states and 5052 transitions. [2023-09-01 02:46:52,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 694 transitions, 3249 flow [2023-09-01 02:46:52,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 694 transitions, 3248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:46:52,273 INFO L231 Difference]: Finished difference. Result has 105 places, 146 transitions, 929 flow [2023-09-01 02:46:52,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=929, PETRI_PLACES=105, PETRI_TRANSITIONS=146} [2023-09-01 02:46:52,274 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 18 predicate places. [2023-09-01 02:46:52,274 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 146 transitions, 929 flow [2023-09-01 02:46:52,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 290.0) internal successors, (3480), 12 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:46:52,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:46:52,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:46:52,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-09-01 02:46:52,485 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 [2023-09-01 02:46:52,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-09-01 02:46:52,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:46:52,486 INFO L85 PathProgramCache]: Analyzing trace with hash -122771836, now seen corresponding path program 1 times [2023-09-01 02:46:52,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 02:46:52,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368841991] [2023-09-01 02:46:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:46:52,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 02:46:52,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 02:46:52,487 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) [2023-09-01 02:46:52,488 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 [2023-09-01 02:46:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:46:52,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 02:46:52,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:46:52,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:46:52,723 INFO L321 Elim1Store]: treesize reduction 161, result has 20.3 percent of original size [2023-09-01 02:46:52,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 74 [2023-09-01 02:46:53,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:46:53,475 INFO L321 Elim1Store]: treesize reduction 34, result has 40.4 percent of original size [2023-09-01 02:46:53,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 52 [2023-09-01 02:46:54,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 02:46:54,619 INFO L321 Elim1Store]: treesize reduction 66, result has 49.2 percent of original size [2023-09-01 02:46:54,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 75 treesize of output 138 [2023-09-01 02:47:03,060 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2023-09-01 02:47:03,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 178 [2023-09-01 02:47:26,605 WARN L222 SmtUtils]: Spent 9.36s on a formula simplification. DAG size of input: 232 DAG size of output: 55 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 02:47:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:47:26,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 02:47:26,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 02:47:26,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368841991] [2023-09-01 02:47:26,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368841991] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:47:26,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:47:26,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 02:47:26,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608967408] [2023-09-01 02:47:26,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:47:26,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:47:26,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 02:47:26,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:47:26,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=14, Unknown=1, NotChecked=0, Total=30 [2023-09-01 02:47:29,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 02:47:33,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 02:47:38,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 02:47:40,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 02:47:41,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 02:47:41,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 837 [2023-09-01 02:47:41,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 146 transitions, 929 flow. Second operand has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 6 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:47:41,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:47:41,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 837 [2023-09-01 02:47:41,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand