./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:53:43,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:53:43,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:53:43,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:53:43,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:53:43,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:53:43,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:53:43,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:53:43,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:53:43,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:53:43,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:53:43,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:53:43,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:53:43,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:53:43,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:53:43,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:53:43,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:53:43,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:53:43,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:53:43,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:53:43,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:53:43,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:53:43,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:53:43,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:53:43,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:53:43,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:53:43,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:53:43,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:53:43,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:53:43,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:53:43,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:53:43,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:53:43,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:53:43,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:53:43,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:53:43,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:53:43,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:53:43,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:53:43,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:53:43,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:53:43,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:53:43,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 16:53:43,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:53:43,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:53:43,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:53:43,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:53:43,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:53:43,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:53:43,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:53:43,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:53:43,511 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:53:43,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:53:43,512 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:53:43,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:53:43,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:53:43,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:53:43,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:53:43,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:53:43,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:53:43,514 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:53:43,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:53:43,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:53:43,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:53:43,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:53:43,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:53:43,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:53:43,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:53:43,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:53:43,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:53:43,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:53:43,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:53:43,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:53:43,516 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:53:43,517 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:53:43,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:53:43,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:53:43,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 [2021-12-14 16:53:43,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:53:43,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:53:43,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:53:43,786 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:53:43,786 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:53:43,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2021-12-14 16:53:43,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0a9c1715/9a65f792ceb84935bae634ba768784e1/FLAG976441f70 [2021-12-14 16:53:44,275 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:53:44,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2021-12-14 16:53:44,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0a9c1715/9a65f792ceb84935bae634ba768784e1/FLAG976441f70 [2021-12-14 16:53:44,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0a9c1715/9a65f792ceb84935bae634ba768784e1 [2021-12-14 16:53:44,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:53:44,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:53:44,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:53:44,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:53:44,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:53:44,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:53:44" (1/1) ... [2021-12-14 16:53:44,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3b9ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44, skipping insertion in model container [2021-12-14 16:53:44,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:53:44" (1/1) ... [2021-12-14 16:53:44,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:53:44,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:53:44,897 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2021-12-14 16:53:44,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:53:44,915 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:53:44,956 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2021-12-14 16:53:44,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:53:44,977 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:53:44,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44 WrapperNode [2021-12-14 16:53:44,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:53:44,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:53:44,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:53:44,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:53:44,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2021-12-14 16:53:45,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2021-12-14 16:53:45,031 INFO L137 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2021-12-14 16:53:45,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:53:45,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:53:45,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:53:45,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:53:45,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2021-12-14 16:53:45,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2021-12-14 16:53:45,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2021-12-14 16:53:45,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2021-12-14 16:53:45,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2021-12-14 16:53:45,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2021-12-14 16:53:45,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2021-12-14 16:53:45,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:53:45,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:53:45,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:53:45,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:53:45,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2021-12-14 16:53:45,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:53:45,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:53:45,125 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) [2021-12-14 16:53:45,167 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 [2021-12-14 16:53:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:53:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-14 16:53:45,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-14 16:53:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-14 16:53:45,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-14 16:53:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-14 16:53:45,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-14 16:53:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:53:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 16:53:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 16:53:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 16:53:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:53:45,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:53:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 16:53:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 16:53:45,185 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-14 16:53:45,337 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:53:45,339 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:53:45,634 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:53:45,645 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:53:45,647 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-14 16:53:45,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:53:45 BoogieIcfgContainer [2021-12-14 16:53:45,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:53:45,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:53:45,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:53:45,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:53:45,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:53:44" (1/3) ... [2021-12-14 16:53:45,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6747e5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:53:45, skipping insertion in model container [2021-12-14 16:53:45,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (2/3) ... [2021-12-14 16:53:45,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6747e5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:53:45, skipping insertion in model container [2021-12-14 16:53:45,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:53:45" (3/3) ... [2021-12-14 16:53:45,660 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-parray-copy.wvr.c [2021-12-14 16:53:45,664 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-14 16:53:45,665 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:53:45,665 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 16:53:45,665 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-14 16:53:45,710 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,710 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,711 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,711 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,711 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,711 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,711 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,712 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,712 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,712 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,712 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,712 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,713 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,713 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,713 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,713 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,713 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,714 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,714 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,714 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,714 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,714 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,715 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,715 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,715 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,715 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,716 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,716 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,716 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,716 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,717 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,717 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,717 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,717 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,717 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,718 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,718 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,718 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,718 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,718 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,718 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,719 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,719 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,719 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,719 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,719 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,720 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,720 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,720 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,720 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,720 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,721 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,721 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,721 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,721 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,721 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,722 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,722 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,722 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,722 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,723 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,723 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,723 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,723 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,723 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,724 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,724 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,724 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,724 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,724 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,725 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,725 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,725 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,725 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,725 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,725 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,726 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,726 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,726 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,726 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,727 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,727 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,727 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,727 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,727 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,728 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,728 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,728 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,728 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,728 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,731 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,731 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,731 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,732 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,732 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,735 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,735 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,735 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,735 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,736 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,736 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,736 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,736 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,737 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,737 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:53:45,739 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-14 16:53:45,782 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:53:45,788 INFO L339 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 16:53:45,791 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-14 16:53:45,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 212 transitions, 448 flow [2021-12-14 16:53:45,869 INFO L129 PetriNetUnfolder]: 17/209 cut-off events. [2021-12-14 16:53:45,873 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-14 16:53:45,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 17/209 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 125 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2021-12-14 16:53:45,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 212 transitions, 448 flow [2021-12-14 16:53:45,883 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 198 transitions, 414 flow [2021-12-14 16:53:45,926 INFO L129 PetriNetUnfolder]: 17/197 cut-off events. [2021-12-14 16:53:45,926 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-14 16:53:45,926 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:53:45,927 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:53:45,928 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:53:45,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:53:45,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1230389299, now seen corresponding path program 1 times [2021-12-14 16:53:45,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:53:45,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469049397] [2021-12-14 16:53:45,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:45,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:53:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:53:46,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:53:46,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469049397] [2021-12-14 16:53:46,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469049397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:53:46,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:53:46,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 16:53:46,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169115021] [2021-12-14 16:53:46,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:53:46,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 16:53:46,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:53:46,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 16:53:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:53:46,202 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 212 [2021-12-14 16:53:46,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 198 transitions, 414 flow. Second operand has 2 states, 2 states have (on average 197.0) internal successors, (394), 2 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:46,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:53:46,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 212 [2021-12-14 16:53:46,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:53:46,288 INFO L129 PetriNetUnfolder]: 5/186 cut-off events. [2021-12-14 16:53:46,288 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-12-14 16:53:46,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 186 events. 5/186 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 18/192 useless extension candidates. Maximal degree in co-relation 147. Up to 7 conditions per place. [2021-12-14 16:53:46,291 INFO L132 encePairwiseOnDemand]: 200/212 looper letters, 6 selfloop transitions, 0 changer transitions 7/186 dead transitions. [2021-12-14 16:53:46,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 186 transitions, 402 flow [2021-12-14 16:53:46,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 16:53:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-14 16:53:46,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 404 transitions. [2021-12-14 16:53:46,304 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9528301886792453 [2021-12-14 16:53:46,305 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 404 transitions. [2021-12-14 16:53:46,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 404 transitions. [2021-12-14 16:53:46,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:53:46,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 404 transitions. [2021-12-14 16:53:46,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 202.0) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:46,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:46,319 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:46,320 INFO L186 Difference]: Start difference. First operand has 191 places, 198 transitions, 414 flow. Second operand 2 states and 404 transitions. [2021-12-14 16:53:46,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 186 transitions, 402 flow [2021-12-14 16:53:46,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 186 transitions, 390 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-14 16:53:46,329 INFO L242 Difference]: Finished difference. Result has 186 places, 179 transitions, 364 flow [2021-12-14 16:53:46,331 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=364, PETRI_PLACES=186, PETRI_TRANSITIONS=179} [2021-12-14 16:53:46,334 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, -5 predicate places. [2021-12-14 16:53:46,335 INFO L470 AbstractCegarLoop]: Abstraction has has 186 places, 179 transitions, 364 flow [2021-12-14 16:53:46,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 197.0) internal successors, (394), 2 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:46,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:53:46,336 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:53:46,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:53:46,336 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:53:46,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:53:46,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1340485429, now seen corresponding path program 1 times [2021-12-14 16:53:46,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:53:46,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053039268] [2021-12-14 16:53:46,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:46,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:53:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:53:46,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:53:46,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053039268] [2021-12-14 16:53:46,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053039268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:53:46,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:53:46,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 16:53:46,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145418892] [2021-12-14 16:53:46,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:53:46,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:53:46,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:53:46,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:53:46,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:53:46,667 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 212 [2021-12-14 16:53:46,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 179 transitions, 364 flow. Second operand has 8 states, 8 states have (on average 138.25) internal successors, (1106), 8 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:46,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:53:46,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 212 [2021-12-14 16:53:46,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:53:47,042 INFO L129 PetriNetUnfolder]: 27/324 cut-off events. [2021-12-14 16:53:47,051 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-14 16:53:47,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 324 events. 27/324 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 599 event pairs, 12 based on Foata normal form. 2/301 useless extension candidates. Maximal degree in co-relation 462. Up to 87 conditions per place. [2021-12-14 16:53:47,054 INFO L132 encePairwiseOnDemand]: 197/212 looper letters, 58 selfloop transitions, 10 changer transitions 31/218 dead transitions. [2021-12-14 16:53:47,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 218 transitions, 640 flow [2021-12-14 16:53:47,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 16:53:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-14 16:53:47,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1817 transitions. [2021-12-14 16:53:47,070 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.659288824383164 [2021-12-14 16:53:47,072 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1817 transitions. [2021-12-14 16:53:47,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1817 transitions. [2021-12-14 16:53:47,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:53:47,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1817 transitions. [2021-12-14 16:53:47,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 139.76923076923077) internal successors, (1817), 13 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:47,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 212.0) internal successors, (2968), 14 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:47,092 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 212.0) internal successors, (2968), 14 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:47,092 INFO L186 Difference]: Start difference. First operand has 186 places, 179 transitions, 364 flow. Second operand 13 states and 1817 transitions. [2021-12-14 16:53:47,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 218 transitions, 640 flow [2021-12-14 16:53:47,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 218 transitions, 640 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-14 16:53:47,100 INFO L242 Difference]: Finished difference. Result has 198 places, 181 transitions, 414 flow [2021-12-14 16:53:47,101 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=414, PETRI_PLACES=198, PETRI_TRANSITIONS=181} [2021-12-14 16:53:47,101 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 7 predicate places. [2021-12-14 16:53:47,102 INFO L470 AbstractCegarLoop]: Abstraction has has 198 places, 181 transitions, 414 flow [2021-12-14 16:53:47,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 138.25) internal successors, (1106), 8 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:47,103 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:53:47,103 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:53:47,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 16:53:47,103 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:53:47,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:53:47,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1470203334, now seen corresponding path program 1 times [2021-12-14 16:53:47,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:53:47,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435944083] [2021-12-14 16:53:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:47,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:53:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:53:47,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:53:47,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435944083] [2021-12-14 16:53:47,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435944083] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:53:47,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758529801] [2021-12-14 16:53:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:47,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:47,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:53:47,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:53:47,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 16:53:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:47,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 16:53:47,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:53:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:53:47,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:53:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:53:48,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758529801] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 16:53:48,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-14 16:53:48,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2021-12-14 16:53:48,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762974267] [2021-12-14 16:53:48,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:53:48,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:53:48,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:53:48,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:53:48,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-12-14 16:53:48,320 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 212 [2021-12-14 16:53:48,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 181 transitions, 414 flow. Second operand has 9 states, 9 states have (on average 151.55555555555554) internal successors, (1364), 9 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:48,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:53:48,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 212 [2021-12-14 16:53:48,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:53:48,855 INFO L129 PetriNetUnfolder]: 1034/1969 cut-off events. [2021-12-14 16:53:48,856 INFO L130 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2021-12-14 16:53:48,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3564 conditions, 1969 events. 1034/1969 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10728 event pairs, 238 based on Foata normal form. 0/1569 useless extension candidates. Maximal degree in co-relation 3553. Up to 447 conditions per place. [2021-12-14 16:53:48,872 INFO L132 encePairwiseOnDemand]: 201/212 looper letters, 94 selfloop transitions, 17 changer transitions 0/238 dead transitions. [2021-12-14 16:53:48,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 238 transitions, 761 flow [2021-12-14 16:53:48,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 16:53:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-14 16:53:48,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1727 transitions. [2021-12-14 16:53:48,877 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7405660377358491 [2021-12-14 16:53:48,877 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1727 transitions. [2021-12-14 16:53:48,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1727 transitions. [2021-12-14 16:53:48,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:53:48,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1727 transitions. [2021-12-14 16:53:48,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:48,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:48,887 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:48,887 INFO L186 Difference]: Start difference. First operand has 198 places, 181 transitions, 414 flow. Second operand 11 states and 1727 transitions. [2021-12-14 16:53:48,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 238 transitions, 761 flow [2021-12-14 16:53:48,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 238 transitions, 731 flow, removed 7 selfloop flow, removed 10 redundant places. [2021-12-14 16:53:48,893 INFO L242 Difference]: Finished difference. Result has 196 places, 193 transitions, 478 flow [2021-12-14 16:53:48,894 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=478, PETRI_PLACES=196, PETRI_TRANSITIONS=193} [2021-12-14 16:53:48,894 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 5 predicate places. [2021-12-14 16:53:48,895 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 193 transitions, 478 flow [2021-12-14 16:53:48,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 151.55555555555554) internal successors, (1364), 9 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:48,895 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:53:48,896 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:53:48,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 16:53:49,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:49,123 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:53:49,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:53:49,123 INFO L85 PathProgramCache]: Analyzing trace with hash -378263568, now seen corresponding path program 2 times [2021-12-14 16:53:49,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:53:49,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448292858] [2021-12-14 16:53:49,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:49,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:53:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:53:49,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:53:49,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448292858] [2021-12-14 16:53:49,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448292858] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:53:49,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189265696] [2021-12-14 16:53:49,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 16:53:49,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:49,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:53:49,249 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:53:49,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 16:53:49,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-14 16:53:49,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 16:53:49,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 16:53:49,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:53:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:53:49,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 16:53:49,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189265696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:53:49,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 16:53:49,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-14 16:53:49,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401070735] [2021-12-14 16:53:49,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:53:49,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:53:49,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:53:49,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:53:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-14 16:53:49,685 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 212 [2021-12-14 16:53:49,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 193 transitions, 478 flow. Second operand has 6 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:49,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:53:49,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 212 [2021-12-14 16:53:49,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:53:49,908 INFO L129 PetriNetUnfolder]: 213/810 cut-off events. [2021-12-14 16:53:49,908 INFO L130 PetriNetUnfolder]: For 354/478 co-relation queries the response was YES. [2021-12-14 16:53:49,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 810 events. 213/810 cut-off events. For 354/478 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4294 event pairs, 68 based on Foata normal form. 8/750 useless extension candidates. Maximal degree in co-relation 1523. Up to 215 conditions per place. [2021-12-14 16:53:49,917 INFO L132 encePairwiseOnDemand]: 204/212 looper letters, 58 selfloop transitions, 5 changer transitions 13/219 dead transitions. [2021-12-14 16:53:49,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 219 transitions, 717 flow [2021-12-14 16:53:49,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:53:49,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-14 16:53:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1083 transitions. [2021-12-14 16:53:49,921 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7297843665768194 [2021-12-14 16:53:49,921 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1083 transitions. [2021-12-14 16:53:49,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1083 transitions. [2021-12-14 16:53:49,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:53:49,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1083 transitions. [2021-12-14 16:53:49,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.71428571428572) internal successors, (1083), 7 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:49,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:49,929 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:49,929 INFO L186 Difference]: Start difference. First operand has 196 places, 193 transitions, 478 flow. Second operand 7 states and 1083 transitions. [2021-12-14 16:53:49,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 219 transitions, 717 flow [2021-12-14 16:53:49,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 219 transitions, 712 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-14 16:53:49,936 INFO L242 Difference]: Finished difference. Result has 203 places, 195 transitions, 501 flow [2021-12-14 16:53:49,937 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=501, PETRI_PLACES=203, PETRI_TRANSITIONS=195} [2021-12-14 16:53:49,937 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 12 predicate places. [2021-12-14 16:53:49,937 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 195 transitions, 501 flow [2021-12-14 16:53:49,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:49,938 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:53:49,938 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:53:49,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 16:53:50,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-14 16:53:50,164 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:53:50,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:53:50,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2145004234, now seen corresponding path program 1 times [2021-12-14 16:53:50,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:53:50,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021479501] [2021-12-14 16:53:50,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:50,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:53:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:53:50,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:53:50,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021479501] [2021-12-14 16:53:50,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021479501] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:53:50,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401713818] [2021-12-14 16:53:50,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:50,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:50,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:53:50,329 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:53:50,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 16:53:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:50,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 16:53:50,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:53:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:53:50,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:53:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:53:51,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401713818] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 16:53:51,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-14 16:53:51,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2021-12-14 16:53:51,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531055646] [2021-12-14 16:53:51,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:53:51,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:53:51,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:53:51,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:53:51,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-12-14 16:53:51,140 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 212 [2021-12-14 16:53:51,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 195 transitions, 501 flow. Second operand has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:51,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:53:51,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 212 [2021-12-14 16:53:51,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:53:51,759 INFO L129 PetriNetUnfolder]: 1698/3565 cut-off events. [2021-12-14 16:53:51,759 INFO L130 PetriNetUnfolder]: For 2112/2354 co-relation queries the response was YES. [2021-12-14 16:53:51,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8100 conditions, 3565 events. 1698/3565 cut-off events. For 2112/2354 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 26906 event pairs, 212 based on Foata normal form. 235/3719 useless extension candidates. Maximal degree in co-relation 8086. Up to 856 conditions per place. [2021-12-14 16:53:51,787 INFO L132 encePairwiseOnDemand]: 200/212 looper letters, 91 selfloop transitions, 30 changer transitions 6/255 dead transitions. [2021-12-14 16:53:51,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 255 transitions, 988 flow [2021-12-14 16:53:51,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 16:53:51,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-14 16:53:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1717 transitions. [2021-12-14 16:53:51,791 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7362778730703259 [2021-12-14 16:53:51,791 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1717 transitions. [2021-12-14 16:53:51,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1717 transitions. [2021-12-14 16:53:51,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:53:51,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1717 transitions. [2021-12-14 16:53:51,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 156.0909090909091) internal successors, (1717), 11 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:51,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:51,802 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:51,803 INFO L186 Difference]: Start difference. First operand has 203 places, 195 transitions, 501 flow. Second operand 11 states and 1717 transitions. [2021-12-14 16:53:51,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 255 transitions, 988 flow [2021-12-14 16:53:51,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 255 transitions, 978 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-12-14 16:53:51,823 INFO L242 Difference]: Finished difference. Result has 213 places, 212 transitions, 699 flow [2021-12-14 16:53:51,824 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=699, PETRI_PLACES=213, PETRI_TRANSITIONS=212} [2021-12-14 16:53:51,826 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 22 predicate places. [2021-12-14 16:53:51,826 INFO L470 AbstractCegarLoop]: Abstraction has has 213 places, 212 transitions, 699 flow [2021-12-14 16:53:51,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:51,827 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:53:51,827 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:53:51,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 16:53:52,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:52,052 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:53:52,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:53:52,053 INFO L85 PathProgramCache]: Analyzing trace with hash -577225570, now seen corresponding path program 2 times [2021-12-14 16:53:52,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:53:52,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554800562] [2021-12-14 16:53:52,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:52,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:53:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:53:52,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:53:52,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554800562] [2021-12-14 16:53:52,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554800562] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:53:52,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888520541] [2021-12-14 16:53:52,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 16:53:52,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:52,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:53:52,171 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:53:52,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 16:53:52,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-14 16:53:52,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 16:53:52,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 16:53:52,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:53:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 16:53:52,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 16:53:52,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888520541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:53:52,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 16:53:52,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-14 16:53:52,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393810051] [2021-12-14 16:53:52,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:53:52,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:53:52,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:53:52,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:53:52,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-14 16:53:52,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 212 [2021-12-14 16:53:52,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 212 transitions, 699 flow. Second operand has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:52,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:53:52,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 212 [2021-12-14 16:53:52,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:53:53,251 INFO L129 PetriNetUnfolder]: 1529/3306 cut-off events. [2021-12-14 16:53:53,251 INFO L130 PetriNetUnfolder]: For 4724/4967 co-relation queries the response was YES. [2021-12-14 16:53:53,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8884 conditions, 3306 events. 1529/3306 cut-off events. For 4724/4967 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24973 event pairs, 554 based on Foata normal form. 184/3396 useless extension candidates. Maximal degree in co-relation 8866. Up to 1058 conditions per place. [2021-12-14 16:53:53,285 INFO L132 encePairwiseOnDemand]: 201/212 looper letters, 134 selfloop transitions, 22 changer transitions 7/290 dead transitions. [2021-12-14 16:53:53,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 290 transitions, 1352 flow [2021-12-14 16:53:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 16:53:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-14 16:53:53,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1351 transitions. [2021-12-14 16:53:53,290 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7080712788259959 [2021-12-14 16:53:53,290 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1351 transitions. [2021-12-14 16:53:53,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1351 transitions. [2021-12-14 16:53:53,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:53:53,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1351 transitions. [2021-12-14 16:53:53,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 150.11111111111111) internal successors, (1351), 9 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:53,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:53,300 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:53,300 INFO L186 Difference]: Start difference. First operand has 213 places, 212 transitions, 699 flow. Second operand 9 states and 1351 transitions. [2021-12-14 16:53:53,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 290 transitions, 1352 flow [2021-12-14 16:53:53,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 290 transitions, 1323 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-12-14 16:53:53,333 INFO L242 Difference]: Finished difference. Result has 221 places, 224 transitions, 881 flow [2021-12-14 16:53:53,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=881, PETRI_PLACES=221, PETRI_TRANSITIONS=224} [2021-12-14 16:53:53,336 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 30 predicate places. [2021-12-14 16:53:53,336 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 224 transitions, 881 flow [2021-12-14 16:53:53,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:53,337 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:53:53,337 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:53:53,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-14 16:53:53,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:53,580 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:53:53,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:53:53,580 INFO L85 PathProgramCache]: Analyzing trace with hash 184538384, now seen corresponding path program 3 times [2021-12-14 16:53:53,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:53:53,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985259363] [2021-12-14 16:53:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:53,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:53:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:53:53,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:53:53,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985259363] [2021-12-14 16:53:53,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985259363] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:53:53,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222981458] [2021-12-14 16:53:53,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 16:53:53,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:53,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:53:53,692 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:53:53,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 16:53:53,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-14 16:53:53,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 16:53:53,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 16:53:53,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:53:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 16:53:54,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 16:53:54,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222981458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:53:54,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 16:53:54,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-14 16:53:54,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714386428] [2021-12-14 16:53:54,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:53:54,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:53:54,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:53:54,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:53:54,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-14 16:53:54,072 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 212 [2021-12-14 16:53:54,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 224 transitions, 881 flow. Second operand has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:54,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:53:54,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 212 [2021-12-14 16:53:54,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:53:54,832 INFO L129 PetriNetUnfolder]: 2004/4058 cut-off events. [2021-12-14 16:53:54,832 INFO L130 PetriNetUnfolder]: For 7007/7253 co-relation queries the response was YES. [2021-12-14 16:53:54,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11576 conditions, 4058 events. 2004/4058 cut-off events. For 7007/7253 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 31315 event pairs, 690 based on Foata normal form. 237/4171 useless extension candidates. Maximal degree in co-relation 11553. Up to 1533 conditions per place. [2021-12-14 16:53:54,886 INFO L132 encePairwiseOnDemand]: 201/212 looper letters, 137 selfloop transitions, 25 changer transitions 7/296 dead transitions. [2021-12-14 16:53:54,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 296 transitions, 1535 flow [2021-12-14 16:53:54,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 16:53:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-14 16:53:54,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1349 transitions. [2021-12-14 16:53:54,891 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7070230607966457 [2021-12-14 16:53:54,891 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1349 transitions. [2021-12-14 16:53:54,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1349 transitions. [2021-12-14 16:53:54,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:53:54,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1349 transitions. [2021-12-14 16:53:54,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 149.88888888888889) internal successors, (1349), 9 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:54,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:54,953 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:54,953 INFO L186 Difference]: Start difference. First operand has 221 places, 224 transitions, 881 flow. Second operand 9 states and 1349 transitions. [2021-12-14 16:53:54,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 296 transitions, 1535 flow [2021-12-14 16:53:54,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 296 transitions, 1502 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-12-14 16:53:54,993 INFO L242 Difference]: Finished difference. Result has 229 places, 235 transitions, 1078 flow [2021-12-14 16:53:54,993 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1078, PETRI_PLACES=229, PETRI_TRANSITIONS=235} [2021-12-14 16:53:54,994 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 38 predicate places. [2021-12-14 16:53:54,994 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 235 transitions, 1078 flow [2021-12-14 16:53:54,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:54,995 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:53:54,995 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:53:55,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 16:53:55,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:55,219 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:53:55,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:53:55,219 INFO L85 PathProgramCache]: Analyzing trace with hash 675682568, now seen corresponding path program 4 times [2021-12-14 16:53:55,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:53:55,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710851085] [2021-12-14 16:53:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:55,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:53:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:53:55,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:53:55,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710851085] [2021-12-14 16:53:55,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710851085] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:53:55,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532193029] [2021-12-14 16:53:55,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-14 16:53:55,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:55,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:53:55,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:53:55,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 16:53:55,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-14 16:53:55,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 16:53:55,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 16:53:55,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:53:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:53:55,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:53:56,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:53:56,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532193029] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 16:53:56,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-14 16:53:56,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 20 [2021-12-14 16:53:56,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926983782] [2021-12-14 16:53:56,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:53:56,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:53:56,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:53:56,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:53:56,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-12-14 16:53:56,208 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 212 [2021-12-14 16:53:56,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 235 transitions, 1078 flow. Second operand has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:56,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:53:56,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 212 [2021-12-14 16:53:56,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:53:57,149 INFO L129 PetriNetUnfolder]: 2304/4811 cut-off events. [2021-12-14 16:53:57,150 INFO L130 PetriNetUnfolder]: For 10551/10826 co-relation queries the response was YES. [2021-12-14 16:53:57,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13933 conditions, 4811 events. 2304/4811 cut-off events. For 10551/10826 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 39499 event pairs, 502 based on Foata normal form. 262/4976 useless extension candidates. Maximal degree in co-relation 13906. Up to 1174 conditions per place. [2021-12-14 16:53:57,211 INFO L132 encePairwiseOnDemand]: 200/212 looper letters, 125 selfloop transitions, 48 changer transitions 2/303 dead transitions. [2021-12-14 16:53:57,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 303 transitions, 1769 flow [2021-12-14 16:53:57,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 16:53:57,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-14 16:53:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1739 transitions. [2021-12-14 16:53:57,216 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7457118353344768 [2021-12-14 16:53:57,216 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1739 transitions. [2021-12-14 16:53:57,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1739 transitions. [2021-12-14 16:53:57,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:53:57,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1739 transitions. [2021-12-14 16:53:57,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 158.0909090909091) internal successors, (1739), 11 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:57,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:57,227 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:57,227 INFO L186 Difference]: Start difference. First operand has 229 places, 235 transitions, 1078 flow. Second operand 11 states and 1739 transitions. [2021-12-14 16:53:57,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 303 transitions, 1769 flow [2021-12-14 16:53:57,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 303 transitions, 1726 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-12-14 16:53:57,295 INFO L242 Difference]: Finished difference. Result has 238 places, 251 transitions, 1392 flow [2021-12-14 16:53:57,295 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1392, PETRI_PLACES=238, PETRI_TRANSITIONS=251} [2021-12-14 16:53:57,296 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 47 predicate places. [2021-12-14 16:53:57,296 INFO L470 AbstractCegarLoop]: Abstraction has has 238 places, 251 transitions, 1392 flow [2021-12-14 16:53:57,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:57,297 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:53:57,297 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:53:57,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 16:53:57,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:57,522 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:53:57,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:53:57,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1375243136, now seen corresponding path program 5 times [2021-12-14 16:53:57,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:53:57,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437550489] [2021-12-14 16:53:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:53:57,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:53:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:53:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:53:57,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:53:57,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437550489] [2021-12-14 16:53:57,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437550489] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:53:57,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136841246] [2021-12-14 16:53:57,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-14 16:53:57,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:53:57,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:53:57,721 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:53:57,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 16:53:57,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 16:53:57,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 16:53:57,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 16:53:57,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:53:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:53:58,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:53:58,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:53:58,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136841246] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 16:53:58,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 16:53:58,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2021-12-14 16:53:58,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552633365] [2021-12-14 16:53:58,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 16:53:58,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-14 16:53:58,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:53:58,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-14 16:53:58,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-12-14 16:53:58,294 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 212 [2021-12-14 16:53:58,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 251 transitions, 1392 flow. Second operand has 17 states, 17 states have (on average 147.0) internal successors, (2499), 17 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:53:58,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:53:58,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 212 [2021-12-14 16:53:58,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:54:01,307 INFO L129 PetriNetUnfolder]: 8160/15044 cut-off events. [2021-12-14 16:54:01,307 INFO L130 PetriNetUnfolder]: For 45897/45918 co-relation queries the response was YES. [2021-12-14 16:54:01,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47607 conditions, 15044 events. 8160/15044 cut-off events. For 45897/45918 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 120402 event pairs, 453 based on Foata normal form. 21/15023 useless extension candidates. Maximal degree in co-relation 47577. Up to 1274 conditions per place. [2021-12-14 16:54:01,522 INFO L132 encePairwiseOnDemand]: 192/212 looper letters, 356 selfloop transitions, 203 changer transitions 6/687 dead transitions. [2021-12-14 16:54:01,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 687 transitions, 4861 flow [2021-12-14 16:54:01,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-14 16:54:01,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-14 16:54:01,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5435 transitions. [2021-12-14 16:54:01,539 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7324797843665768 [2021-12-14 16:54:01,539 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5435 transitions. [2021-12-14 16:54:01,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5435 transitions. [2021-12-14 16:54:01,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:54:01,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5435 transitions. [2021-12-14 16:54:01,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 155.28571428571428) internal successors, (5435), 35 states have internal predecessors, (5435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:54:01,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 212.0) internal successors, (7632), 36 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:54:01,589 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 212.0) internal successors, (7632), 36 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:54:01,589 INFO L186 Difference]: Start difference. First operand has 238 places, 251 transitions, 1392 flow. Second operand 35 states and 5435 transitions. [2021-12-14 16:54:01,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 687 transitions, 4861 flow [2021-12-14 16:54:01,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 687 transitions, 4802 flow, removed 26 selfloop flow, removed 4 redundant places. [2021-12-14 16:54:01,965 INFO L242 Difference]: Finished difference. Result has 276 places, 385 transitions, 3245 flow [2021-12-14 16:54:01,966 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3245, PETRI_PLACES=276, PETRI_TRANSITIONS=385} [2021-12-14 16:54:01,966 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 85 predicate places. [2021-12-14 16:54:01,966 INFO L470 AbstractCegarLoop]: Abstraction has has 276 places, 385 transitions, 3245 flow [2021-12-14 16:54:01,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 147.0) internal successors, (2499), 17 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:54:01,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:54:01,967 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:54:01,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-14 16:54:02,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:54:02,169 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:54:02,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:54:02,169 INFO L85 PathProgramCache]: Analyzing trace with hash -686560330, now seen corresponding path program 1 times [2021-12-14 16:54:02,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:54:02,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405145445] [2021-12-14 16:54:02,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:54:02,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:54:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:54:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:54:02,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:54:02,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405145445] [2021-12-14 16:54:02,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405145445] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:54:02,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046380568] [2021-12-14 16:54:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:54:02,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:54:02,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:54:02,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:54:02,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-14 16:54:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:54:02,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 16:54:02,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:54:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:54:03,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:54:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:54:03,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046380568] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 16:54:03,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 16:54:03,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2021-12-14 16:54:03,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083590209] [2021-12-14 16:54:03,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 16:54:03,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-14 16:54:03,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:54:03,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-14 16:54:03,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2021-12-14 16:54:03,702 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 212 [2021-12-14 16:54:03,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 385 transitions, 3245 flow. Second operand has 31 states, 31 states have (on average 124.7741935483871) internal successors, (3868), 31 states have internal predecessors, (3868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:54:03,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:54:03,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 212 [2021-12-14 16:54:03,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:54:05,831 INFO L129 PetriNetUnfolder]: 2414/7031 cut-off events. [2021-12-14 16:54:05,832 INFO L130 PetriNetUnfolder]: For 38646/39096 co-relation queries the response was YES. [2021-12-14 16:54:05,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24561 conditions, 7031 events. 2414/7031 cut-off events. For 38646/39096 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 64336 event pairs, 797 based on Foata normal form. 311/7215 useless extension candidates. Maximal degree in co-relation 24523. Up to 2153 conditions per place. [2021-12-14 16:54:05,923 INFO L132 encePairwiseOnDemand]: 182/212 looper letters, 348 selfloop transitions, 70 changer transitions 2/599 dead transitions. [2021-12-14 16:54:05,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 599 transitions, 5903 flow [2021-12-14 16:54:05,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-14 16:54:05,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-14 16:54:05,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3794 transitions. [2021-12-14 16:54:05,929 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5965408805031447 [2021-12-14 16:54:05,929 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3794 transitions. [2021-12-14 16:54:05,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3794 transitions. [2021-12-14 16:54:05,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:54:05,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3794 transitions. [2021-12-14 16:54:05,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 126.46666666666667) internal successors, (3794), 30 states have internal predecessors, (3794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:54:05,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 212.0) internal successors, (6572), 31 states have internal predecessors, (6572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:54:05,951 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 212.0) internal successors, (6572), 31 states have internal predecessors, (6572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:54:05,951 INFO L186 Difference]: Start difference. First operand has 276 places, 385 transitions, 3245 flow. Second operand 30 states and 3794 transitions. [2021-12-14 16:54:05,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 599 transitions, 5903 flow [2021-12-14 16:54:06,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 599 transitions, 5639 flow, removed 74 selfloop flow, removed 10 redundant places. [2021-12-14 16:54:06,276 INFO L242 Difference]: Finished difference. Result has 302 places, 440 transitions, 3883 flow [2021-12-14 16:54:06,277 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=3091, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3883, PETRI_PLACES=302, PETRI_TRANSITIONS=440} [2021-12-14 16:54:06,278 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 111 predicate places. [2021-12-14 16:54:06,278 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 440 transitions, 3883 flow [2021-12-14 16:54:06,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 124.7741935483871) internal successors, (3868), 31 states have internal predecessors, (3868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:54:06,278 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:54:06,279 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:54:06,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-14 16:54:06,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-14 16:54:06,484 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:54:06,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:54:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash -761571678, now seen corresponding path program 1 times [2021-12-14 16:54:06,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:54:06,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432512391] [2021-12-14 16:54:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:54:06,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:54:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:54:07,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:54:07,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:54:07,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432512391] [2021-12-14 16:54:07,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432512391] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:54:07,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825355192] [2021-12-14 16:54:07,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:54:07,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:54:07,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:54:07,518 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:54:07,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-14 16:54:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:54:07,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-14 16:54:07,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:54:07,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 16:54:08,163 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-14 16:54:08,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 11 [2021-12-14 16:54:08,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 15 [2021-12-14 16:54:09,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 16:54:09,274 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-12-14 16:54:09,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 13 [2021-12-14 16:54:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:54:09,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:54:10,560 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 16:54:10,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 102 treesize of output 98 [2021-12-14 16:54:10,705 INFO L354 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2021-12-14 16:54:10,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 24 [2021-12-14 16:54:10,743 INFO L354 Elim1Store]: treesize reduction 22, result has 55.1 percent of original size [2021-12-14 16:54:10,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 56 treesize of output 58 [2021-12-14 16:54:10,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 16:54:10,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-12-14 16:54:10,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 16:54:10,792 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-12-14 16:54:10,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 49 treesize of output 1 [2021-12-14 16:54:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:54:18,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825355192] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 16:54:18,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 16:54:18,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 28, 20] total 64 [2021-12-14 16:54:18,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100800141] [2021-12-14 16:54:18,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 16:54:18,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-14 16:54:18,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:54:18,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-14 16:54:18,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=3578, Unknown=6, NotChecked=0, Total=4032 [2021-12-14 16:54:18,188 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 212 [2021-12-14 16:54:18,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 440 transitions, 3883 flow. Second operand has 64 states, 64 states have (on average 85.078125) internal successors, (5445), 64 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:54:18,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:54:18,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 212 [2021-12-14 16:54:18,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:54:31,847 WARN L227 SmtUtils]: Spent 10.26s on a formula simplification. DAG size of input: 65 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)