./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 07:12:43,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 07:12:43,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 07:12:43,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 07:12:43,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 07:12:43,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 07:12:43,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 07:12:43,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 07:12:43,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 07:12:43,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 07:12:43,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 07:12:43,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 07:12:43,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 07:12:43,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 07:12:43,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 07:12:43,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 07:12:43,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 07:12:43,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 07:12:43,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 07:12:43,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 07:12:43,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 07:12:43,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 07:12:43,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 07:12:43,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 07:12:43,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 07:12:43,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 07:12:43,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 07:12:43,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 07:12:43,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 07:12:43,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 07:12:43,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 07:12:43,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 07:12:43,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 07:12:43,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 07:12:43,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 07:12:43,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 07:12:43,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 07:12:43,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 07:12:43,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 07:12:43,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 07:12:43,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 07:12:43,708 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 07:12:43,741 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 07:12:43,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 07:12:43,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 07:12:43,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 07:12:43,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 07:12:43,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 07:12:43,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 07:12:43,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 07:12:43,744 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 07:12:43,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 07:12:43,745 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 07:12:43,746 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 07:12:43,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 07:12:43,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 07:12:43,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 07:12:43,746 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 07:12:43,747 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 07:12:43,747 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 07:12:43,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 07:12:43,747 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 07:12:43,747 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 07:12:43,747 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 07:12:43,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 07:12:43,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 07:12:43,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 07:12:43,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:12:43,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 07:12:43,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 07:12:43,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 07:12:43,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 07:12:43,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 07:12:43,749 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 07:12:43,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 07:12:43,750 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 07:12:43,750 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 07:12:44,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 07:12:44,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 07:12:44,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 07:12:44,088 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 07:12:44,088 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 07:12:44,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2023-08-30 07:12:45,254 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 07:12:45,479 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 07:12:45,479 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2023-08-30 07:12:45,485 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff52c6005/8eeab06afd4c46f9a9f86b554703c518/FLAG672544796 [2023-08-30 07:12:45,498 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff52c6005/8eeab06afd4c46f9a9f86b554703c518 [2023-08-30 07:12:45,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 07:12:45,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 07:12:45,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 07:12:45,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 07:12:45,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 07:12:45,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:45" (1/1) ... [2023-08-30 07:12:45,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3be8dba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:45, skipping insertion in model container [2023-08-30 07:12:45,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:45" (1/1) ... [2023-08-30 07:12:45,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 07:12:45,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:12:45,746 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-prod-cons3.wvr.c[4007,4020] [2023-08-30 07:12:45,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:12:45,771 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-30 07:12:45,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72189ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:45, skipping insertion in model container [2023-08-30 07:12:45,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 07:12:45,774 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 07:12:45,775 INFO L158 Benchmark]: Toolchain (without parser) took 273.55ms. Allocated memory is still 71.3MB. Free memory was 49.4MB in the beginning and 38.7MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 07:12:45,776 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 56.6MB. Free memory is still 34.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 07:12:45,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.66ms. Allocated memory is still 71.3MB. Free memory was 49.1MB in the beginning and 38.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 07:12:45,778 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 56.6MB. Free memory is still 34.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.66ms. Allocated memory is still 71.3MB. Free memory was 49.1MB in the beginning and 38.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 159]: 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-prod-cons3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 07:12:47,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 07:12:47,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 07:12:47,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 07:12:47,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 07:12:47,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 07:12:47,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 07:12:47,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 07:12:47,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 07:12:47,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 07:12:47,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 07:12:47,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 07:12:47,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 07:12:47,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 07:12:47,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 07:12:47,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 07:12:47,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 07:12:47,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 07:12:47,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 07:12:47,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 07:12:47,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 07:12:47,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 07:12:47,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 07:12:47,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 07:12:47,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 07:12:47,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 07:12:47,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 07:12:47,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 07:12:47,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 07:12:47,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 07:12:47,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 07:12:47,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 07:12:47,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 07:12:47,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 07:12:47,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 07:12:47,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 07:12:47,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 07:12:47,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 07:12:47,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 07:12:47,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 07:12:47,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 07:12:47,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 07:12:47,524 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 07:12:47,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 07:12:47,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 07:12:47,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 07:12:47,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 07:12:47,526 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 07:12:47,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 07:12:47,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 07:12:47,527 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 07:12:47,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 07:12:47,528 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 07:12:47,529 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 07:12:47,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 07:12:47,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 07:12:47,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 07:12:47,529 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 07:12:47,530 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 07:12:47,530 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 07:12:47,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 07:12:47,530 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 07:12:47,530 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 07:12:47,530 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 07:12:47,531 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 07:12:47,531 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 07:12:47,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 07:12:47,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 07:12:47,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 07:12:47,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:12:47,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 07:12:47,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 07:12:47,532 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 07:12:47,532 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 07:12:47,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 07:12:47,533 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 07:12:47,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 07:12:47,533 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 07:12:47,534 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 07:12:47,534 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 07:12:47,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 07:12:47,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 07:12:47,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 07:12:47,880 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 07:12:47,881 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 07:12:47,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2023-08-30 07:12:49,014 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 07:12:49,200 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 07:12:49,201 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2023-08-30 07:12:49,206 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7a98e309/bd79a66570dd4bdc917c71a588eadce8/FLAG20c51ca60 [2023-08-30 07:12:49,218 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7a98e309/bd79a66570dd4bdc917c71a588eadce8 [2023-08-30 07:12:49,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 07:12:49,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 07:12:49,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 07:12:49,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 07:12:49,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 07:12:49,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:49" (1/1) ... [2023-08-30 07:12:49,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a3cb447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:49, skipping insertion in model container [2023-08-30 07:12:49,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:49" (1/1) ... [2023-08-30 07:12:49,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 07:12:49,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:12:49,417 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-prod-cons3.wvr.c[4007,4020] [2023-08-30 07:12:49,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:12:49,457 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 07:12:49,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:12:49,498 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-prod-cons3.wvr.c[4007,4020] [2023-08-30 07:12:49,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:12:49,511 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 07:12:49,550 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-prod-cons3.wvr.c[4007,4020] [2023-08-30 07:12:49,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:12:49,569 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 07:12:49,570 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 07:12:49,576 INFO L208 MainTranslator]: Completed translation [2023-08-30 07:12:49,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:49 WrapperNode [2023-08-30 07:12:49,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 07:12:49,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 07:12:49,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 07:12:49,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 07:12:49,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:49" (1/1) ... [2023-08-30 07:12:49,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:49" (1/1) ... [2023-08-30 07:12:49,643 INFO L138 Inliner]: procedures = 28, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 267 [2023-08-30 07:12:49,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 07:12:49,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 07:12:49,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 07:12:49,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 07:12:49,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:49" (1/1) ... [2023-08-30 07:12:49,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:49" (1/1) ... [2023-08-30 07:12:49,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:49" (1/1) ... [2023-08-30 07:12:49,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:49" (1/1) ... [2023-08-30 07:12:49,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:49" (1/1) ... [2023-08-30 07:12:49,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:49" (1/1) ... [2023-08-30 07:12:49,699 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:49" (1/1) ... [2023-08-30 07:12:49,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:49" (1/1) ... [2023-08-30 07:12:49,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 07:12:49,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 07:12:49,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 07:12:49,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 07:12:49,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:49" (1/1) ... [2023-08-30 07:12:49,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:12:49,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:12:49,742 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 07:12:49,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 07:12:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 07:12:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 07:12:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 07:12:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 07:12:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 07:12:49,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 07:12:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 07:12:49,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 07:12:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 07:12:49,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 07:12:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 07:12:49,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 07:12:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 07:12:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 07:12:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 07:12:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 07:12:49,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 07:12:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 07:12:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 07:12:49,784 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 07:12:49,894 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 07:12:49,895 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 07:12:50,456 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 07:12:50,582 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 07:12:50,582 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-30 07:12:50,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:50 BoogieIcfgContainer [2023-08-30 07:12:50,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 07:12:50,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 07:12:50,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 07:12:50,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 07:12:50,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:12:49" (1/3) ... [2023-08-30 07:12:50,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1def2b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:12:50, skipping insertion in model container [2023-08-30 07:12:50,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:49" (2/3) ... [2023-08-30 07:12:50,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1def2b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:12:50, skipping insertion in model container [2023-08-30 07:12:50,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:50" (3/3) ... [2023-08-30 07:12:50,593 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2023-08-30 07:12:50,608 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 07:12:50,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-30 07:12:50,608 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 07:12:50,704 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 07:12:50,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 252 transitions, 536 flow [2023-08-30 07:12:50,855 INFO L130 PetriNetUnfolder]: 18/248 cut-off events. [2023-08-30 07:12:50,855 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 07:12:50,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 248 events. 18/248 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 252 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 205. Up to 3 conditions per place. [2023-08-30 07:12:50,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 252 transitions, 536 flow [2023-08-30 07:12:50,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 244 transitions, 512 flow [2023-08-30 07:12:50,877 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 07:12:50,889 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 244 transitions, 512 flow [2023-08-30 07:12:50,893 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 244 transitions, 512 flow [2023-08-30 07:12:50,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 244 transitions, 512 flow [2023-08-30 07:12:50,952 INFO L130 PetriNetUnfolder]: 18/244 cut-off events. [2023-08-30 07:12:50,953 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 07:12:50,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 244 events. 18/244 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 250 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 205. Up to 3 conditions per place. [2023-08-30 07:12:50,959 INFO L119 LiptonReduction]: Number of co-enabled transitions 3744 [2023-08-30 07:13:22,369 WARN L222 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 147 DAG size of output: 144 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 07:13:23,949 INFO L134 LiptonReduction]: Checked pairs total: 8241 [2023-08-30 07:13:23,949 INFO L136 LiptonReduction]: Total number of compositions: 258 [2023-08-30 07:13:23,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 07:13:23,964 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;@7aa13f66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 07:13:23,964 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-08-30 07:13:23,966 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 07:13:23,966 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:13:23,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:13:23,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 07:13:23,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-08-30 07:13:23,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:13:23,972 INFO L85 PathProgramCache]: Analyzing trace with hash 34059, now seen corresponding path program 1 times [2023-08-30 07:13:23,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:13:23,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911347922] [2023-08-30 07:13:23,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:13:23,987 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:23,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:13:23,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:13:23,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-30 07:13:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:13:24,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 07:13:24,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:13:24,392 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2023-08-30 07:13:24,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2023-08-30 07:13:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:13:24,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:13:24,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:13:24,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911347922] [2023-08-30 07:13:24,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911347922] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:13:24,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:13:24,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:13:24,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814287088] [2023-08-30 07:13:24,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:13:24,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:13:24,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:13:24,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:13:24,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:13:24,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 510 [2023-08-30 07:13:24,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:24,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:13:24,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 510 [2023-08-30 07:13:24,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:13:26,860 INFO L130 PetriNetUnfolder]: 15527/20422 cut-off events. [2023-08-30 07:13:26,861 INFO L131 PetriNetUnfolder]: For 557/557 co-relation queries the response was YES. [2023-08-30 07:13:26,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41202 conditions, 20422 events. 15527/20422 cut-off events. For 557/557 co-relation queries the response was YES. Maximal size of possible extension queue 1348. Compared 108319 event pairs, 12002 based on Foata normal form. 0/9278 useless extension candidates. Maximal degree in co-relation 37919. Up to 19881 conditions per place. [2023-08-30 07:13:27,007 INFO L137 encePairwiseOnDemand]: 506/510 looper letters, 58 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 07:13:27,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 62 transitions, 266 flow [2023-08-30 07:13:27,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:13:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:13:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-08-30 07:13:27,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44640522875816996 [2023-08-30 07:13:27,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-08-30 07:13:27,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-08-30 07:13:27,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:13:27,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-08-30 07:13:27,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:27,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:27,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:27,099 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 154 flow. Second operand 3 states and 683 transitions. [2023-08-30 07:13:27,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 62 transitions, 266 flow [2023-08-30 07:13:27,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 250 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 07:13:27,131 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 134 flow [2023-08-30 07:13:27,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-08-30 07:13:27,136 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-08-30 07:13:27,136 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 134 flow [2023-08-30 07:13:27,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:27,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:13:27,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 07:13:27,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-08-30 07:13:27,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:27,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-08-30 07:13:27,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:13:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash 34060, now seen corresponding path program 1 times [2023-08-30 07:13:27,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:13:27,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035304600] [2023-08-30 07:13:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:13:27,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:27,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:13:27,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:13:27,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-30 07:13:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:13:27,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 07:13:27,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:13:27,653 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2023-08-30 07:13:27,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2023-08-30 07:13:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:13:27,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:13:27,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:13:27,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035304600] [2023-08-30 07:13:27,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035304600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:13:27,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:13:27,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:13:27,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831749046] [2023-08-30 07:13:27,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:13:27,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:13:27,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:13:27,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:13:27,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:13:27,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 510 [2023-08-30 07:13:27,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:27,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:13:27,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 510 [2023-08-30 07:13:27,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:13:31,440 INFO L130 PetriNetUnfolder]: 31053/40841 cut-off events. [2023-08-30 07:13:31,440 INFO L131 PetriNetUnfolder]: For 108/108 co-relation queries the response was YES. [2023-08-30 07:13:31,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81374 conditions, 40841 events. 31053/40841 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 2696. Compared 238487 event pairs, 24004 based on Foata normal form. 0/18558 useless extension candidates. Maximal degree in co-relation 81368. Up to 19882 conditions per place. [2023-08-30 07:13:31,683 INFO L137 encePairwiseOnDemand]: 504/510 looper letters, 111 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2023-08-30 07:13:31,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 118 transitions, 484 flow [2023-08-30 07:13:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:13:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:13:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 738 transitions. [2023-08-30 07:13:31,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2023-08-30 07:13:31,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 738 transitions. [2023-08-30 07:13:31,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 738 transitions. [2023-08-30 07:13:31,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:13:31,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 738 transitions. [2023-08-30 07:13:31,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:31,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:31,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:31,698 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 134 flow. Second operand 3 states and 738 transitions. [2023-08-30 07:13:31,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 118 transitions, 484 flow [2023-08-30 07:13:31,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 118 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:13:31,701 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 165 flow [2023-08-30 07:13:31,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-08-30 07:13:31,703 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2023-08-30 07:13:31,704 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 165 flow [2023-08-30 07:13:31,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:31,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:13:31,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:13:31,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-30 07:13:31,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:31,917 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-08-30 07:13:31,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:13:31,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1059602, now seen corresponding path program 1 times [2023-08-30 07:13:31,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:13:31,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581187982] [2023-08-30 07:13:31,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:13:31,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:31,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:13:31,923 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:13:31,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-30 07:13:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:13:31,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 07:13:31,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:13:32,320 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2023-08-30 07:13:32,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2023-08-30 07:13:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:13:32,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:13:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:13:32,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:13:32,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581187982] [2023-08-30 07:13:32,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581187982] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:13:32,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:13:32,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 07:13:32,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162885710] [2023-08-30 07:13:32,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:13:32,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 07:13:32,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:13:32,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 07:13:32,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 07:13:33,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 510 [2023-08-30 07:13:33,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:33,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:13:33,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 510 [2023-08-30 07:13:33,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:13:38,283 INFO L130 PetriNetUnfolder]: 46587/61272 cut-off events. [2023-08-30 07:13:38,283 INFO L131 PetriNetUnfolder]: For 162/162 co-relation queries the response was YES. [2023-08-30 07:13:38,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122106 conditions, 61272 events. 46587/61272 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 3795. Compared 373619 event pairs, 36006 based on Foata normal form. 0/27855 useless extension candidates. Maximal degree in co-relation 122097. Up to 19883 conditions per place. [2023-08-30 07:13:38,592 INFO L137 encePairwiseOnDemand]: 501/510 looper letters, 164 selfloop transitions, 19 changer transitions 0/186 dead transitions. [2023-08-30 07:13:38,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 186 transitions, 813 flow [2023-08-30 07:13:38,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 07:13:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 07:13:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1371 transitions. [2023-08-30 07:13:38,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44803921568627453 [2023-08-30 07:13:38,601 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1371 transitions. [2023-08-30 07:13:38,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1371 transitions. [2023-08-30 07:13:38,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:13:38,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1371 transitions. [2023-08-30 07:13:38,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 228.5) internal successors, (1371), 6 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:38,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 510.0) internal successors, (3570), 7 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:38,614 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 510.0) internal successors, (3570), 7 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:38,614 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 165 flow. Second operand 6 states and 1371 transitions. [2023-08-30 07:13:38,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 186 transitions, 813 flow [2023-08-30 07:13:38,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 186 transitions, 799 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:13:38,620 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 302 flow [2023-08-30 07:13:38,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2023-08-30 07:13:38,621 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2023-08-30 07:13:38,623 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 302 flow [2023-08-30 07:13:38,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:38,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:13:38,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:13:38,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-30 07:13:38,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:38,833 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-08-30 07:13:38,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:13:38,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1060263, now seen corresponding path program 1 times [2023-08-30 07:13:38,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:13:38,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614312425] [2023-08-30 07:13:38,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:13:38,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:38,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:13:38,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:13:38,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-30 07:13:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:13:38,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 07:13:38,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:13:38,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:38,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:38,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:38,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:38,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:39,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:39,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:39,108 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2023-08-30 07:13:39,109 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 [2023-08-30 07:13:39,147 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-08-30 07:13:39,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2023-08-30 07:13:39,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:39,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 07:13:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:13:39,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:13:39,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:13:39,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614312425] [2023-08-30 07:13:39,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614312425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:13:39,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:13:39,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:13:39,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183478012] [2023-08-30 07:13:39,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:13:39,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:13:39,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:13:39,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:13:39,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 07:13:39,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 510 [2023-08-30 07:13:39,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:39,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:13:39,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 510 [2023-08-30 07:13:39,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:13:42,906 INFO L130 PetriNetUnfolder]: 39133/51871 cut-off events. [2023-08-30 07:13:42,907 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2023-08-30 07:13:42,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103352 conditions, 51871 events. 39133/51871 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 3361. Compared 316893 event pairs, 30066 based on Foata normal form. 0/24400 useless extension candidates. Maximal degree in co-relation 103339. Up to 50248 conditions per place. [2023-08-30 07:13:43,345 INFO L137 encePairwiseOnDemand]: 507/510 looper letters, 72 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2023-08-30 07:13:43,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 76 transitions, 428 flow [2023-08-30 07:13:43,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:13:43,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:13:43,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 695 transitions. [2023-08-30 07:13:43,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542483660130719 [2023-08-30 07:13:43,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 695 transitions. [2023-08-30 07:13:43,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 695 transitions. [2023-08-30 07:13:43,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:13:43,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 695 transitions. [2023-08-30 07:13:43,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:43,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:43,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:43,358 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 302 flow. Second operand 3 states and 695 transitions. [2023-08-30 07:13:43,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 76 transitions, 428 flow [2023-08-30 07:13:43,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 409 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 07:13:43,362 INFO L231 Difference]: Finished difference. Result has 73 places, 76 transitions, 265 flow [2023-08-30 07:13:43,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=73, PETRI_TRANSITIONS=76} [2023-08-30 07:13:43,366 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2023-08-30 07:13:43,366 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 76 transitions, 265 flow [2023-08-30 07:13:43,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:43,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:13:43,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:13:43,383 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 (5)] Forceful destruction successful, exit code 0 [2023-08-30 07:13:43,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:43,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-08-30 07:13:43,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:13:43,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1060262, now seen corresponding path program 1 times [2023-08-30 07:13:43,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:13:43,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86663707] [2023-08-30 07:13:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:13:43,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:43,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:13:43,583 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:13:43,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-30 07:13:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:13:43,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 07:13:43,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:13:43,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:43,795 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2023-08-30 07:13:43,795 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 81 [2023-08-30 07:13:44,170 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-08-30 07:13:44,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2023-08-30 07:13:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:13:44,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:13:44,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:13:44,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86663707] [2023-08-30 07:13:44,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86663707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:13:44,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:13:44,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:13:44,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892761118] [2023-08-30 07:13:44,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:13:44,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:13:44,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:13:44,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:13:44,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:13:44,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 510 [2023-08-30 07:13:44,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 76 transitions, 265 flow. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:44,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:13:44,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 510 [2023-08-30 07:13:44,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:13:47,535 INFO L130 PetriNetUnfolder]: 31679/42470 cut-off events. [2023-08-30 07:13:47,535 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2023-08-30 07:13:47,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84531 conditions, 42470 events. 31679/42470 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 2833. Compared 259457 event pairs, 24126 based on Foata normal form. 0/20944 useless extension candidates. Maximal degree in co-relation 84517. Up to 40847 conditions per place. [2023-08-30 07:13:47,765 INFO L137 encePairwiseOnDemand]: 507/510 looper letters, 68 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-08-30 07:13:47,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 383 flow [2023-08-30 07:13:47,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:13:47,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:13:47,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 687 transitions. [2023-08-30 07:13:47,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44901960784313727 [2023-08-30 07:13:47,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 687 transitions. [2023-08-30 07:13:47,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 687 transitions. [2023-08-30 07:13:47,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:13:47,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 687 transitions. [2023-08-30 07:13:47,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:47,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:47,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:47,779 INFO L175 Difference]: Start difference. First operand has 73 places, 76 transitions, 265 flow. Second operand 3 states and 687 transitions. [2023-08-30 07:13:47,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 383 flow [2023-08-30 07:13:47,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 382 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:13:47,782 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 246 flow [2023-08-30 07:13:47,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-08-30 07:13:47,784 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -1 predicate places. [2023-08-30 07:13:47,785 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 246 flow [2023-08-30 07:13:47,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:47,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:13:47,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:13:47,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-30 07:13:47,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:47,995 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-08-30 07:13:47,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:13:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1018938690, now seen corresponding path program 1 times [2023-08-30 07:13:47,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:13:47,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021486142] [2023-08-30 07:13:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:13:47,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:47,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:13:47,998 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:13:48,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-30 07:13:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:13:48,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 07:13:48,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:13:48,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:48,233 INFO L321 Elim1Store]: treesize reduction 161, result has 20.3 percent of original size [2023-08-30 07:13:48,233 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 [2023-08-30 07:13:48,953 INFO L321 Elim1Store]: treesize reduction 58, result has 27.5 percent of original size [2023-08-30 07:13:48,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 44 [2023-08-30 07:13:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:13:49,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:13:49,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:13:49,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021486142] [2023-08-30 07:13:49,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021486142] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:13:49,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:13:49,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:13:49,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853564022] [2023-08-30 07:13:49,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:13:49,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:13:49,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:13:49,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:13:49,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:13:49,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 510 [2023-08-30 07:13:49,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:49,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:13:49,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 510 [2023-08-30 07:13:49,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:13:52,878 INFO L130 PetriNetUnfolder]: 30899/41348 cut-off events. [2023-08-30 07:13:52,878 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2023-08-30 07:13:52,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82288 conditions, 41348 events. 30899/41348 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 2831. Compared 251824 event pairs, 23394 based on Foata normal form. 0/20521 useless extension candidates. Maximal degree in co-relation 82273. Up to 39725 conditions per place. [2023-08-30 07:13:53,107 INFO L137 encePairwiseOnDemand]: 507/510 looper letters, 66 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-08-30 07:13:53,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 70 transitions, 376 flow [2023-08-30 07:13:53,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:13:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:13:53,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2023-08-30 07:13:53,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4477124183006536 [2023-08-30 07:13:53,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2023-08-30 07:13:53,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2023-08-30 07:13:53,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:13:53,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2023-08-30 07:13:53,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:53,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:53,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:53,116 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 246 flow. Second operand 3 states and 685 transitions. [2023-08-30 07:13:53,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 70 transitions, 376 flow [2023-08-30 07:13:53,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:13:53,118 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 243 flow [2023-08-30 07:13:53,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2023-08-30 07:13:53,119 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -2 predicate places. [2023-08-30 07:13:53,119 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 243 flow [2023-08-30 07:13:53,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:53,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:13:53,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:13:53,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-30 07:13:53,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:53,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-08-30 07:13:53,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:13:53,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1018938691, now seen corresponding path program 1 times [2023-08-30 07:13:53,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:13:53,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219102169] [2023-08-30 07:13:53,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:13:53,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:53,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:13:53,334 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:13:53,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-30 07:13:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:13:53,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 07:13:53,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:13:53,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:53,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:53,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:53,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:53,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:53,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:53,563 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-30 07:13:53,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 41 [2023-08-30 07:13:53,740 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-08-30 07:13:53,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2023-08-30 07:13:53,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:13:53,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 07:13:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:13:53,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:13:53,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:13:53,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219102169] [2023-08-30 07:13:53,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219102169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:13:53,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:13:53,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:13:53,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136842998] [2023-08-30 07:13:53,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:13:53,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:13:53,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:13:53,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:13:53,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 07:13:53,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 510 [2023-08-30 07:13:54,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:54,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:13:54,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 510 [2023-08-30 07:13:54,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:13:56,753 INFO L130 PetriNetUnfolder]: 30119/40226 cut-off events. [2023-08-30 07:13:56,753 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2023-08-30 07:13:56,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80045 conditions, 40226 events. 30119/40226 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 2829. Compared 244463 event pairs, 22662 based on Foata normal form. 0/20098 useless extension candidates. Maximal degree in co-relation 80029. Up to 38603 conditions per place. [2023-08-30 07:13:56,951 INFO L137 encePairwiseOnDemand]: 507/510 looper letters, 64 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-08-30 07:13:56,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 369 flow [2023-08-30 07:13:56,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:13:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:13:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2023-08-30 07:13:56,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503267973856209 [2023-08-30 07:13:56,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2023-08-30 07:13:56,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2023-08-30 07:13:56,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:13:56,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2023-08-30 07:13:56,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:56,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:56,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:56,957 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 243 flow. Second operand 3 states and 689 transitions. [2023-08-30 07:13:56,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 369 flow [2023-08-30 07:13:56,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:13:56,959 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 240 flow [2023-08-30 07:13:56,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2023-08-30 07:13:56,959 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -3 predicate places. [2023-08-30 07:13:56,959 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 240 flow [2023-08-30 07:13:56,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:56,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:13:56,960 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 07:13:56,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-30 07:13:57,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:57,165 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-08-30 07:13:57,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:13:57,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1505547916, now seen corresponding path program 2 times [2023-08-30 07:13:57,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:13:57,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449073526] [2023-08-30 07:13:57,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:13:57,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:57,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:13:57,167 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:13:57,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-30 07:13:57,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:13:57,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:13:57,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 07:13:57,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:13:57,363 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2023-08-30 07:13:57,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2023-08-30 07:13:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:13:57,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:13:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:13:57,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:13:57,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449073526] [2023-08-30 07:13:57,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449073526] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:13:57,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:13:57,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 07:13:57,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352543505] [2023-08-30 07:13:57,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:13:57,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 07:13:57,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:13:57,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 07:13:57,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-30 07:14:01,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 510 [2023-08-30 07:14:01,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 240 flow. Second operand has 12 states, 12 states have (on average 200.0) internal successors, (2400), 12 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:01,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:14:01,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 510 [2023-08-30 07:14:01,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:14:03,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:14:05,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:14:07,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:14:09,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:14:12,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:14:22,914 INFO L130 PetriNetUnfolder]: 90346/120654 cut-off events. [2023-08-30 07:14:22,914 INFO L131 PetriNetUnfolder]: For 528/528 co-relation queries the response was YES. [2023-08-30 07:14:23,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240010 conditions, 120654 events. 90346/120654 cut-off events. For 528/528 co-relation queries the response was YES. Maximal size of possible extension queue 5358. Compared 799355 event pairs, 67986 based on Foata normal form. 11/60277 useless extension candidates. Maximal degree in co-relation 239993. Up to 12873 conditions per place. [2023-08-30 07:14:23,569 INFO L137 encePairwiseOnDemand]: 503/510 looper letters, 410 selfloop transitions, 31 changer transitions 0/444 dead transitions. [2023-08-30 07:14:23,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 444 transitions, 2034 flow [2023-08-30 07:14:23,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 07:14:23,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 07:14:23,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2840 transitions. [2023-08-30 07:14:23,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46405228758169936 [2023-08-30 07:14:23,577 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2840 transitions. [2023-08-30 07:14:23,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2840 transitions. [2023-08-30 07:14:23,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:14:23,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2840 transitions. [2023-08-30 07:14:23,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 236.66666666666666) internal successors, (2840), 12 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:23,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 510.0) internal successors, (6630), 13 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:23,593 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 510.0) internal successors, (6630), 13 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:23,594 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 240 flow. Second operand 12 states and 2840 transitions. [2023-08-30 07:14:23,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 444 transitions, 2034 flow [2023-08-30 07:14:23,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 444 transitions, 2033 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:14:23,600 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 471 flow [2023-08-30 07:14:23,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=471, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2023-08-30 07:14:23,601 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2023-08-30 07:14:23,601 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 471 flow [2023-08-30 07:14:23,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 200.0) internal successors, (2400), 12 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:23,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:14:23,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 07:14:23,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-30 07:14:23,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:14:23,809 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-08-30 07:14:23,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:14:23,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1522320967, now seen corresponding path program 1 times [2023-08-30 07:14:23,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:14:23,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320832529] [2023-08-30 07:14:23,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:14:23,814 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:14:23,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:14:23,815 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:14:23,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-30 07:14:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:14:23,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 07:14:23,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:14:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:14:23,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:14:23,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:14:23,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320832529] [2023-08-30 07:14:23,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320832529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:14:23,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:14:23,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:14:23,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777909824] [2023-08-30 07:14:23,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:14:23,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:14:23,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:14:23,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:14:23,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 07:14:24,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 510 [2023-08-30 07:14:24,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 210.25) internal successors, (841), 4 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:24,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:14:24,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 510 [2023-08-30 07:14:24,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:14:34,263 INFO L130 PetriNetUnfolder]: 101561/137739 cut-off events. [2023-08-30 07:14:34,263 INFO L131 PetriNetUnfolder]: For 741/741 co-relation queries the response was YES. [2023-08-30 07:14:34,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274110 conditions, 137739 events. 101561/137739 cut-off events. For 741/741 co-relation queries the response was YES. Maximal size of possible extension queue 6003. Compared 960847 event pairs, 78795 based on Foata normal form. 1422/73487 useless extension candidates. Maximal degree in co-relation 274085. Up to 115784 conditions per place. [2023-08-30 07:14:35,136 INFO L137 encePairwiseOnDemand]: 499/510 looper letters, 129 selfloop transitions, 3 changer transitions 0/135 dead transitions. [2023-08-30 07:14:35,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 135 transitions, 952 flow [2023-08-30 07:14:35,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 07:14:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 07:14:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 934 transitions. [2023-08-30 07:14:35,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45784313725490194 [2023-08-30 07:14:35,139 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 934 transitions. [2023-08-30 07:14:35,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 934 transitions. [2023-08-30 07:14:35,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:14:35,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 934 transitions. [2023-08-30 07:14:35,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 233.5) internal successors, (934), 4 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:35,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 510.0) internal successors, (2550), 5 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:35,145 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 510.0) internal successors, (2550), 5 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:35,145 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 471 flow. Second operand 4 states and 934 transitions. [2023-08-30 07:14:35,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 135 transitions, 952 flow [2023-08-30 07:14:35,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 135 transitions, 869 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-08-30 07:14:35,150 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 433 flow [2023-08-30 07:14:35,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=433, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2023-08-30 07:14:35,151 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2023-08-30 07:14:35,151 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 433 flow [2023-08-30 07:14:35,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.25) internal successors, (841), 4 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:35,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:14:35,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:14:35,165 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 (10)] Ended with exit code 0 [2023-08-30 07:14:35,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:14:35,361 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-08-30 07:14:35,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:14:35,362 INFO L85 PathProgramCache]: Analyzing trace with hash -555878067, now seen corresponding path program 1 times [2023-08-30 07:14:35,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:14:35,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693086668] [2023-08-30 07:14:35,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:14:35,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:14:35,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:14:35,363 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:14:35,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-30 07:14:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:14:35,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 07:14:35,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:14:35,650 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2023-08-30 07:14:35,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2023-08-30 07:14:35,796 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2023-08-30 07:14:35,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2023-08-30 07:14:35,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:14:35,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 07:14:35,940 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 07:14:35,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-30 07:14:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:14:35,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:14:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:14:37,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:14:37,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693086668] [2023-08-30 07:14:37,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693086668] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:14:37,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:14:37,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-08-30 07:14:37,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933865192] [2023-08-30 07:14:37,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:14:37,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 07:14:37,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:14:37,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 07:14:37,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 07:14:40,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 510 [2023-08-30 07:14:40,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 433 flow. Second operand has 8 states, 8 states have (on average 188.5) internal successors, (1508), 8 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:40,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:14:40,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 510 [2023-08-30 07:14:40,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:14:47,253 WARN L222 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 55 DAG size of output: 54 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 07:14:49,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 07:14:59,882 WARN L222 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 44 DAG size of output: 43 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 07:15:40,874 INFO L130 PetriNetUnfolder]: 233098/314811 cut-off events. [2023-08-30 07:15:40,875 INFO L131 PetriNetUnfolder]: For 41770/41770 co-relation queries the response was YES. [2023-08-30 07:15:42,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705948 conditions, 314811 events. 233098/314811 cut-off events. For 41770/41770 co-relation queries the response was YES. Maximal size of possible extension queue 12288. Compared 2348483 event pairs, 179307 based on Foata normal form. 0/200223 useless extension candidates. Maximal degree in co-relation 705921. Up to 115750 conditions per place. [2023-08-30 07:15:43,310 INFO L137 encePairwiseOnDemand]: 501/510 looper letters, 248 selfloop transitions, 29 changer transitions 0/280 dead transitions. [2023-08-30 07:15:43,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 280 transitions, 1637 flow [2023-08-30 07:15:43,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 07:15:43,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 07:15:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3042 transitions. [2023-08-30 07:15:43,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976470588235294 [2023-08-30 07:15:43,318 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3042 transitions. [2023-08-30 07:15:43,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3042 transitions. [2023-08-30 07:15:43,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:15:43,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3042 transitions. [2023-08-30 07:15:43,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 202.8) internal successors, (3042), 15 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:15:43,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 510.0) internal successors, (8160), 16 states have internal predecessors, (8160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:15:43,335 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 510.0) internal successors, (8160), 16 states have internal predecessors, (8160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:15:43,336 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 433 flow. Second operand 15 states and 3042 transitions. [2023-08-30 07:15:43,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 280 transitions, 1637 flow [2023-08-30 07:15:43,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 280 transitions, 1631 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 07:15:43,357 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 654 flow [2023-08-30 07:15:43,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=654, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2023-08-30 07:15:43,357 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 32 predicate places. [2023-08-30 07:15:43,357 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 654 flow [2023-08-30 07:15:43,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 188.5) internal successors, (1508), 8 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:15:43,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:15:43,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:15:43,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-30 07:15:43,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:15:43,566 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-08-30 07:15:43,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:15:43,566 INFO L85 PathProgramCache]: Analyzing trace with hash -52438515, now seen corresponding path program 1 times [2023-08-30 07:15:43,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:15:43,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144631426] [2023-08-30 07:15:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:15:43,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:15:43,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:15:43,568 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:15:43,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-30 07:15:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:15:43,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 07:15:43,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:15:43,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:43,792 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2023-08-30 07:15:43,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2023-08-30 07:15:44,507 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2023-08-30 07:15:44,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2023-08-30 07:15:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:15:44,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:15:44,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:15:44,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144631426] [2023-08-30 07:15:44,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144631426] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:15:44,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:15:44,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:15:44,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741810311] [2023-08-30 07:15:44,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:15:44,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:15:44,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:15:44,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:15:44,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:15:45,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 510 [2023-08-30 07:15:45,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 654 flow. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:15:45,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:15:45,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 510 [2023-08-30 07:15:45,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:16:10,715 INFO L130 PetriNetUnfolder]: 228706/307935 cut-off events. [2023-08-30 07:16:10,715 INFO L131 PetriNetUnfolder]: For 137458/137458 co-relation queries the response was YES.