./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/array-eq-trans.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 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 00:46:07,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 00:46:07,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 00:46:07,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 00:46:07,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 00:46:07,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 00:46:07,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 00:46:07,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 00:46:07,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 00:46:07,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 00:46:07,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 00:46:07,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 00:46:07,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 00:46:07,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 00:46:07,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 00:46:07,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 00:46:07,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 00:46:07,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 00:46:07,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 00:46:07,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 00:46:07,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 00:46:07,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 00:46:07,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 00:46:07,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 00:46:07,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 00:46:07,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 00:46:07,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 00:46:07,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 00:46:07,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 00:46:07,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 00:46:07,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 00:46:07,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 00:46:07,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 00:46:07,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 00:46:07,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 00:46:07,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 00:46:07,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 00:46:07,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 00:46:07,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 00:46:07,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 00:46:07,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 00:46:07,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 00:46:07,464 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 00:46:07,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 00:46:07,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 00:46:07,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 00:46:07,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 00:46:07,466 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 00:46:07,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 00:46:07,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 00:46:07,467 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 00:46:07,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 00:46:07,468 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 00:46:07,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 00:46:07,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 00:46:07,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 00:46:07,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 00:46:07,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 00:46:07,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 00:46:07,470 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 00:46:07,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 00:46:07,470 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 00:46:07,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 00:46:07,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 00:46:07,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 00:46:07,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 00:46:07,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 00:46:07,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 00:46:07,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 00:46:07,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 00:46:07,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 00:46:07,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 00:46:07,472 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 00:46:07,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 00:46:07,473 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 00:46:07,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 00:46:07,473 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 00:46:07,473 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 00:46:07,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 00:46:07,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 00:46:07,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 00:46:07,765 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 00:46:07,765 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 00:46:07,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2023-08-31 00:46:08,918 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 00:46:09,068 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 00:46:09,069 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2023-08-31 00:46:09,075 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66a9896c0/aff490ca7f9b407c9050b6bd274f75e8/FLAGa20fbed47 [2023-08-31 00:46:09,096 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66a9896c0/aff490ca7f9b407c9050b6bd274f75e8 [2023-08-31 00:46:09,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 00:46:09,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 00:46:09,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 00:46:09,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 00:46:09,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 00:46:09,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:46:09" (1/1) ... [2023-08-31 00:46:09,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7555011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:46:09, skipping insertion in model container [2023-08-31 00:46:09,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:46:09" (1/1) ... [2023-08-31 00:46:09,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 00:46:09,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 00:46:09,320 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c[2737,2750] [2023-08-31 00:46:09,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 00:46:09,345 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 00:46:09,383 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c[2737,2750] [2023-08-31 00:46:09,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 00:46:09,398 INFO L208 MainTranslator]: Completed translation [2023-08-31 00:46:09,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:46:09 WrapperNode [2023-08-31 00:46:09,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 00:46:09,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 00:46:09,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 00:46:09,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 00:46:09,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:46:09" (1/1) ... [2023-08-31 00:46:09,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:46:09" (1/1) ... [2023-08-31 00:46:09,459 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 210 [2023-08-31 00:46:09,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 00:46:09,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 00:46:09,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 00:46:09,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 00:46:09,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:46:09" (1/1) ... [2023-08-31 00:46:09,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:46:09" (1/1) ... [2023-08-31 00:46:09,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:46:09" (1/1) ... [2023-08-31 00:46:09,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:46:09" (1/1) ... [2023-08-31 00:46:09,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:46:09" (1/1) ... [2023-08-31 00:46:09,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:46:09" (1/1) ... [2023-08-31 00:46:09,484 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:46:09" (1/1) ... [2023-08-31 00:46:09,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:46:09" (1/1) ... [2023-08-31 00:46:09,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 00:46:09,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 00:46:09,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 00:46:09,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 00:46:09,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:46:09" (1/1) ... [2023-08-31 00:46:09,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 00:46:09,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:46:09,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 00:46:09,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 00:46:09,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 00:46:09,555 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 00:46:09,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 00:46:09,555 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 00:46:09,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 00:46:09,555 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 00:46:09,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 00:46:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 00:46:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 00:46:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 00:46:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 00:46:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 00:46:09,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 00:46:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 00:46:09,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 00:46:09,558 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 00:46:09,650 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 00:46:09,653 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 00:46:10,072 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 00:46:10,081 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 00:46:10,081 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-31 00:46:10,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:46:10 BoogieIcfgContainer [2023-08-31 00:46:10,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 00:46:10,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 00:46:10,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 00:46:10,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 00:46:10,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 12:46:09" (1/3) ... [2023-08-31 00:46:10,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd83e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 12:46:10, skipping insertion in model container [2023-08-31 00:46:10,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:46:09" (2/3) ... [2023-08-31 00:46:10,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd83e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 12:46:10, skipping insertion in model container [2023-08-31 00:46:10,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:46:10" (3/3) ... [2023-08-31 00:46:10,090 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-08-31 00:46:10,097 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 00:46:10,104 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 00:46:10,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 00:46:10,104 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 00:46:10,229 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 00:46:10,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 287 transitions, 598 flow [2023-08-31 00:46:10,416 INFO L130 PetriNetUnfolder]: 30/284 cut-off events. [2023-08-31 00:46:10,416 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 00:46:10,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 284 events. 30/284 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 244 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 189. Up to 3 conditions per place. [2023-08-31 00:46:10,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 287 transitions, 598 flow [2023-08-31 00:46:10,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 274 transitions, 566 flow [2023-08-31 00:46:10,436 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 00:46:10,447 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 274 transitions, 566 flow [2023-08-31 00:46:10,451 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 274 transitions, 566 flow [2023-08-31 00:46:10,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 274 transitions, 566 flow [2023-08-31 00:46:10,530 INFO L130 PetriNetUnfolder]: 30/274 cut-off events. [2023-08-31 00:46:10,530 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 00:46:10,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 274 events. 30/274 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 243 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 189. Up to 3 conditions per place. [2023-08-31 00:46:10,534 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-08-31 00:46:21,045 INFO L134 LiptonReduction]: Checked pairs total: 3952 [2023-08-31 00:46:21,045 INFO L136 LiptonReduction]: Total number of compositions: 315 [2023-08-31 00:46:21,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 00:46:21,068 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ef0b6d7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 00:46:21,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 00:46:21,074 INFO L130 PetriNetUnfolder]: 8/28 cut-off events. [2023-08-31 00:46:21,075 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 00:46:21,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:46:21,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:46:21,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 00:46:21,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:46:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash 640432984, now seen corresponding path program 1 times [2023-08-31 00:46:21,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:46:21,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375377759] [2023-08-31 00:46:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:46:21,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:46:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:46:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:46:22,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:46:22,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375377759] [2023-08-31 00:46:22,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375377759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:46:22,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:46:22,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 00:46:22,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818902063] [2023-08-31 00:46:22,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:46:22,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 00:46:22,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:46:22,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 00:46:22,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-31 00:46:22,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 602 [2023-08-31 00:46:22,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 76 flow. Second operand has 6 states, 6 states have (on average 241.16666666666666) internal successors, (1447), 6 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:22,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:46:22,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 602 [2023-08-31 00:46:22,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:46:22,545 INFO L130 PetriNetUnfolder]: 301/444 cut-off events. [2023-08-31 00:46:22,545 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-31 00:46:22,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 444 events. 301/444 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1151 event pairs, 154 based on Foata normal form. 1/297 useless extension candidates. Maximal degree in co-relation 484. Up to 291 conditions per place. [2023-08-31 00:46:22,549 INFO L137 encePairwiseOnDemand]: 592/602 looper letters, 28 selfloop transitions, 6 changer transitions 18/52 dead transitions. [2023-08-31 00:46:22,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 244 flow [2023-08-31 00:46:22,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 00:46:22,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 00:46:22,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1483 transitions. [2023-08-31 00:46:22,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41057585825027687 [2023-08-31 00:46:22,566 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1483 transitions. [2023-08-31 00:46:22,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1483 transitions. [2023-08-31 00:46:22,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:46:22,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1483 transitions. [2023-08-31 00:46:22,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.16666666666666) internal successors, (1483), 6 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:22,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:22,587 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:22,588 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 76 flow. Second operand 6 states and 1483 transitions. [2023-08-31 00:46:22,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 244 flow [2023-08-31 00:46:22,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 52 transitions, 220 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 00:46:22,594 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 112 flow [2023-08-31 00:46:22,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2023-08-31 00:46:22,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-08-31 00:46:22,598 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 112 flow [2023-08-31 00:46:22,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.16666666666666) internal successors, (1447), 6 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:22,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:46:22,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:46:22,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 00:46:22,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 00:46:22,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:46:22,601 INFO L85 PathProgramCache]: Analyzing trace with hash 529232224, now seen corresponding path program 1 times [2023-08-31 00:46:22,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:46:22,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424253256] [2023-08-31 00:46:22,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:46:22,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:46:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:46:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:46:22,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:46:22,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424253256] [2023-08-31 00:46:22,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424253256] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:46:22,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156590945] [2023-08-31 00:46:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:46:22,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:46:22,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:46:22,777 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) [2023-08-31 00:46:22,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 00:46:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:46:22,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 00:46:22,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:46:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:46:23,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 00:46:23,992 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 00:46:23,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 222 [2023-08-31 00:46:24,319 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 00:46:24,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 186 treesize of output 366 [2023-08-31 00:46:31,691 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:31,825 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:31,918 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:32,531 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:32,697 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:32,774 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:32,868 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:32,912 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:32,995 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:33,049 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 00:46:33,071 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:33,122 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 00:46:33,143 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:33,177 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 00:46:33,198 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:33,233 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:34,042 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:36,061 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:36,167 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:44,980 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:52,695 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:52,727 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:52,792 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:52,803 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:52,815 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 00:46:52,848 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:52,868 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:52,877 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 00:46:52,924 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:52,960 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:52,990 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:52,997 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-31 00:46:53,175 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:53,269 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 00:46:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:46:53,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156590945] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 00:46:53,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 00:46:53,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9 [2023-08-31 00:46:53,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143676462] [2023-08-31 00:46:53,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:46:53,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 00:46:53,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:46:53,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 00:46:53,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-08-31 00:46:53,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 602 [2023-08-31 00:46:53,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:53,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:46:53,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 602 [2023-08-31 00:46:53,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:46:53,686 INFO L130 PetriNetUnfolder]: 536/777 cut-off events. [2023-08-31 00:46:53,686 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-08-31 00:46:53,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 777 events. 536/777 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2425 event pairs, 154 based on Foata normal form. 1/625 useless extension candidates. Maximal degree in co-relation 1285. Up to 288 conditions per place. [2023-08-31 00:46:53,690 INFO L137 encePairwiseOnDemand]: 594/602 looper letters, 69 selfloop transitions, 7 changer transitions 17/93 dead transitions. [2023-08-31 00:46:53,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 93 transitions, 454 flow [2023-08-31 00:46:53,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 00:46:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 00:46:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1286 transitions. [2023-08-31 00:46:53,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42724252491694353 [2023-08-31 00:46:53,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1286 transitions. [2023-08-31 00:46:53,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1286 transitions. [2023-08-31 00:46:53,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:46:53,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1286 transitions. [2023-08-31 00:46:53,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 257.2) internal successors, (1286), 5 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:53,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:53,703 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:53,704 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 112 flow. Second operand 5 states and 1286 transitions. [2023-08-31 00:46:53,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 93 transitions, 454 flow [2023-08-31 00:46:53,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 93 transitions, 438 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-31 00:46:53,707 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 143 flow [2023-08-31 00:46:53,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-08-31 00:46:53,707 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2023-08-31 00:46:53,708 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 143 flow [2023-08-31 00:46:53,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:53,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:46:53,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:46:53,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 00:46:53,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:46:53,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 00:46:53,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:46:53,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1369199754, now seen corresponding path program 1 times [2023-08-31 00:46:53,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:46:53,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164079882] [2023-08-31 00:46:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:46:53,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:46:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:46:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:46:54,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:46:54,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164079882] [2023-08-31 00:46:54,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164079882] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:46:54,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347530252] [2023-08-31 00:46:54,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:46:54,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:46:54,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:46:54,221 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) [2023-08-31 00:46:54,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 00:46:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:46:54,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 00:46:54,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:46:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 00:46:54,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 00:46:54,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347530252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:46:54,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 00:46:54,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-08-31 00:46:54,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766712842] [2023-08-31 00:46:54,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:46:54,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 00:46:54,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:46:54,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 00:46:54,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-31 00:46:54,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 602 [2023-08-31 00:46:54,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:54,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:46:54,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 602 [2023-08-31 00:46:54,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:46:54,838 INFO L130 PetriNetUnfolder]: 896/1316 cut-off events. [2023-08-31 00:46:54,838 INFO L131 PetriNetUnfolder]: For 687/687 co-relation queries the response was YES. [2023-08-31 00:46:54,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3221 conditions, 1316 events. 896/1316 cut-off events. For 687/687 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4820 event pairs, 261 based on Foata normal form. 61/1145 useless extension candidates. Maximal degree in co-relation 3197. Up to 667 conditions per place. [2023-08-31 00:46:54,846 INFO L137 encePairwiseOnDemand]: 593/602 looper letters, 80 selfloop transitions, 13 changer transitions 3/96 dead transitions. [2023-08-31 00:46:54,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 513 flow [2023-08-31 00:46:54,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 00:46:54,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 00:46:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1577 transitions. [2023-08-31 00:46:54,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366002214839424 [2023-08-31 00:46:54,850 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1577 transitions. [2023-08-31 00:46:54,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1577 transitions. [2023-08-31 00:46:54,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:46:54,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1577 transitions. [2023-08-31 00:46:54,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.8333333333333) internal successors, (1577), 6 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:54,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:54,862 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:54,862 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 143 flow. Second operand 6 states and 1577 transitions. [2023-08-31 00:46:54,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 513 flow [2023-08-31 00:46:54,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 96 transitions, 509 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-31 00:46:54,866 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 236 flow [2023-08-31 00:46:54,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-08-31 00:46:54,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2023-08-31 00:46:54,867 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 236 flow [2023-08-31 00:46:54,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:54,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:46:54,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:46:54,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 00:46:55,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-31 00:46:55,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 00:46:55,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:46:55,075 INFO L85 PathProgramCache]: Analyzing trace with hash 581163285, now seen corresponding path program 1 times [2023-08-31 00:46:55,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:46:55,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141291491] [2023-08-31 00:46:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:46:55,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:46:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:46:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:46:55,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:46:55,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141291491] [2023-08-31 00:46:55,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141291491] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:46:55,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509138173] [2023-08-31 00:46:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:46:55,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:46:55,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:46:55,283 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) [2023-08-31 00:46:55,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 00:46:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:46:55,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-31 00:46:55,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:46:55,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:46:55,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 00:46:56,045 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 00:46:56,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 222 [2023-08-31 00:46:56,317 INFO L321 Elim1Store]: treesize reduction 85, result has 62.9 percent of original size [2023-08-31 00:46:56,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 186 treesize of output 281 [2023-08-31 00:46:57,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:46:57,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509138173] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 00:46:57,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 00:46:57,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 12 [2023-08-31 00:46:57,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861368845] [2023-08-31 00:46:57,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:46:57,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 00:46:57,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:46:57,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 00:46:57,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-31 00:46:57,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 602 [2023-08-31 00:46:57,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 238.33333333333334) internal successors, (1430), 6 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:57,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:46:57,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 602 [2023-08-31 00:46:57,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:46:57,616 INFO L130 PetriNetUnfolder]: 1680/2510 cut-off events. [2023-08-31 00:46:57,616 INFO L131 PetriNetUnfolder]: For 2544/2544 co-relation queries the response was YES. [2023-08-31 00:46:57,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6941 conditions, 2510 events. 1680/2510 cut-off events. For 2544/2544 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11146 event pairs, 261 based on Foata normal form. 2/2102 useless extension candidates. Maximal degree in co-relation 5554. Up to 1282 conditions per place. [2023-08-31 00:46:57,629 INFO L137 encePairwiseOnDemand]: 596/602 looper letters, 75 selfloop transitions, 14 changer transitions 1/90 dead transitions. [2023-08-31 00:46:57,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 90 transitions, 613 flow [2023-08-31 00:46:57,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 00:46:57,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 00:46:57,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1007 transitions. [2023-08-31 00:46:57,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181893687707641 [2023-08-31 00:46:57,632 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1007 transitions. [2023-08-31 00:46:57,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1007 transitions. [2023-08-31 00:46:57,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:46:57,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1007 transitions. [2023-08-31 00:46:57,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:57,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 602.0) internal successors, (3010), 5 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:57,640 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 602.0) internal successors, (3010), 5 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:57,640 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 236 flow. Second operand 4 states and 1007 transitions. [2023-08-31 00:46:57,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 90 transitions, 613 flow [2023-08-31 00:46:57,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 90 transitions, 595 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-31 00:46:57,646 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 372 flow [2023-08-31 00:46:57,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2023-08-31 00:46:57,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2023-08-31 00:46:57,648 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 372 flow [2023-08-31 00:46:57,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 238.33333333333334) internal successors, (1430), 6 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:57,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:46:57,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:46:57,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 00:46:57,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:46:57,859 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 00:46:57,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:46:57,860 INFO L85 PathProgramCache]: Analyzing trace with hash -311930904, now seen corresponding path program 1 times [2023-08-31 00:46:57,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:46:57,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568752583] [2023-08-31 00:46:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:46:57,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:46:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:46:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 00:46:57,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:46:57,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568752583] [2023-08-31 00:46:57,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568752583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:46:57,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:46:57,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 00:46:57,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643176349] [2023-08-31 00:46:57,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:46:57,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 00:46:57,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:46:57,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 00:46:57,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 00:46:58,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 602 [2023-08-31 00:46:58,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 254.25) internal successors, (1017), 4 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:58,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:46:58,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 602 [2023-08-31 00:46:58,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:46:58,549 INFO L130 PetriNetUnfolder]: 2829/4372 cut-off events. [2023-08-31 00:46:58,549 INFO L131 PetriNetUnfolder]: For 9703/9703 co-relation queries the response was YES. [2023-08-31 00:46:58,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13235 conditions, 4372 events. 2829/4372 cut-off events. For 9703/9703 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 22502 event pairs, 1934 based on Foata normal form. 376/4746 useless extension candidates. Maximal degree in co-relation 8290. Up to 1611 conditions per place. [2023-08-31 00:46:58,574 INFO L137 encePairwiseOnDemand]: 595/602 looper letters, 111 selfloop transitions, 6 changer transitions 2/119 dead transitions. [2023-08-31 00:46:58,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 119 transitions, 924 flow [2023-08-31 00:46:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 00:46:58,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 00:46:58,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1328 transitions. [2023-08-31 00:46:58,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44119601328903657 [2023-08-31 00:46:58,578 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1328 transitions. [2023-08-31 00:46:58,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1328 transitions. [2023-08-31 00:46:58,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:46:58,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1328 transitions. [2023-08-31 00:46:58,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 265.6) internal successors, (1328), 5 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:58,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:58,587 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:58,588 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 372 flow. Second operand 5 states and 1328 transitions. [2023-08-31 00:46:58,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 119 transitions, 924 flow [2023-08-31 00:46:58,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 119 transitions, 920 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-31 00:46:58,598 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 413 flow [2023-08-31 00:46:58,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-08-31 00:46:58,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2023-08-31 00:46:58,601 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 413 flow [2023-08-31 00:46:58,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 254.25) internal successors, (1017), 4 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:58,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:46:58,602 INFO L208 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] [2023-08-31 00:46:58,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 00:46:58,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 00:46:58,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:46:58,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1484325975, now seen corresponding path program 1 times [2023-08-31 00:46:58,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:46:58,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315581904] [2023-08-31 00:46:58,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:46:58,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:46:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:46:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 00:46:58,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:46:58,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315581904] [2023-08-31 00:46:58,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315581904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:46:58,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:46:58,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 00:46:58,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028168870] [2023-08-31 00:46:58,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:46:58,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 00:46:58,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:46:58,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 00:46:58,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 00:46:58,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 602 [2023-08-31 00:46:58,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 254.5) internal successors, (1018), 4 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:58,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:46:58,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 602 [2023-08-31 00:46:58,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:46:59,039 INFO L130 PetriNetUnfolder]: 1379/2138 cut-off events. [2023-08-31 00:46:59,039 INFO L131 PetriNetUnfolder]: For 5296/5296 co-relation queries the response was YES. [2023-08-31 00:46:59,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6941 conditions, 2138 events. 1379/2138 cut-off events. For 5296/5296 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9528 event pairs, 885 based on Foata normal form. 88/2226 useless extension candidates. Maximal degree in co-relation 5208. Up to 1478 conditions per place. [2023-08-31 00:46:59,053 INFO L137 encePairwiseOnDemand]: 595/602 looper letters, 93 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2023-08-31 00:46:59,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 99 transitions, 755 flow [2023-08-31 00:46:59,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 00:46:59,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 00:46:59,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1321 transitions. [2023-08-31 00:46:59,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388704318936877 [2023-08-31 00:46:59,059 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1321 transitions. [2023-08-31 00:46:59,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1321 transitions. [2023-08-31 00:46:59,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:46:59,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1321 transitions. [2023-08-31 00:46:59,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 264.2) internal successors, (1321), 5 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:59,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:59,084 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:59,084 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 413 flow. Second operand 5 states and 1321 transitions. [2023-08-31 00:46:59,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 99 transitions, 755 flow [2023-08-31 00:46:59,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 709 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-31 00:46:59,092 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 381 flow [2023-08-31 00:46:59,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-08-31 00:46:59,094 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2023-08-31 00:46:59,094 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 381 flow [2023-08-31 00:46:59,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 254.5) internal successors, (1018), 4 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:59,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:46:59,095 INFO L208 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] [2023-08-31 00:46:59,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 00:46:59,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 00:46:59,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:46:59,099 INFO L85 PathProgramCache]: Analyzing trace with hash 13136424, now seen corresponding path program 1 times [2023-08-31 00:46:59,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:46:59,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700759430] [2023-08-31 00:46:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:46:59,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:46:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:46:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 00:46:59,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:46:59,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700759430] [2023-08-31 00:46:59,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700759430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:46:59,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:46:59,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 00:46:59,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986492428] [2023-08-31 00:46:59,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:46:59,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 00:46:59,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:46:59,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 00:46:59,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 00:46:59,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 602 [2023-08-31 00:46:59,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 381 flow. Second operand has 5 states, 5 states have (on average 252.4) internal successors, (1262), 5 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:59,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:46:59,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 602 [2023-08-31 00:46:59,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:46:59,662 INFO L130 PetriNetUnfolder]: 1607/2478 cut-off events. [2023-08-31 00:46:59,662 INFO L131 PetriNetUnfolder]: For 4682/4682 co-relation queries the response was YES. [2023-08-31 00:46:59,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7804 conditions, 2478 events. 1607/2478 cut-off events. For 4682/4682 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11362 event pairs, 853 based on Foata normal form. 40/2518 useless extension candidates. Maximal degree in co-relation 6080. Up to 1477 conditions per place. [2023-08-31 00:46:59,677 INFO L137 encePairwiseOnDemand]: 595/602 looper letters, 61 selfloop transitions, 10 changer transitions 43/114 dead transitions. [2023-08-31 00:46:59,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 114 transitions, 850 flow [2023-08-31 00:46:59,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 00:46:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 00:46:59,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1570 transitions. [2023-08-31 00:46:59,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43466223698781836 [2023-08-31 00:46:59,682 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1570 transitions. [2023-08-31 00:46:59,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1570 transitions. [2023-08-31 00:46:59,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:46:59,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1570 transitions. [2023-08-31 00:46:59,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.6666666666667) internal successors, (1570), 6 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:59,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:59,691 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:59,692 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 381 flow. Second operand 6 states and 1570 transitions. [2023-08-31 00:46:59,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 114 transitions, 850 flow [2023-08-31 00:46:59,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 114 transitions, 838 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 00:46:59,699 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 365 flow [2023-08-31 00:46:59,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=365, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-08-31 00:46:59,700 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2023-08-31 00:46:59,700 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 365 flow [2023-08-31 00:46:59,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 252.4) internal successors, (1262), 5 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:59,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:46:59,701 INFO L208 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] [2023-08-31 00:46:59,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 00:46:59,701 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 00:46:59,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:46:59,702 INFO L85 PathProgramCache]: Analyzing trace with hash 300584546, now seen corresponding path program 1 times [2023-08-31 00:46:59,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:46:59,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714707261] [2023-08-31 00:46:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:46:59,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:46:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:46:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 00:46:59,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:46:59,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714707261] [2023-08-31 00:46:59,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714707261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:46:59,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:46:59,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 00:46:59,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070302537] [2023-08-31 00:46:59,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:46:59,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 00:46:59,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:46:59,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 00:46:59,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 00:46:59,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 602 [2023-08-31 00:46:59,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 365 flow. Second operand has 5 states, 5 states have (on average 252.4) internal successors, (1262), 5 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:46:59,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:46:59,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 602 [2023-08-31 00:46:59,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:47:00,268 INFO L130 PetriNetUnfolder]: 2159/3261 cut-off events. [2023-08-31 00:47:00,268 INFO L131 PetriNetUnfolder]: For 8565/8565 co-relation queries the response was YES. [2023-08-31 00:47:00,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11073 conditions, 3261 events. 2159/3261 cut-off events. For 8565/8565 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15104 event pairs, 810 based on Foata normal form. 86/3347 useless extension candidates. Maximal degree in co-relation 9988. Up to 1517 conditions per place. [2023-08-31 00:47:00,290 INFO L137 encePairwiseOnDemand]: 596/602 looper letters, 91 selfloop transitions, 9 changer transitions 1/101 dead transitions. [2023-08-31 00:47:00,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 101 transitions, 855 flow [2023-08-31 00:47:00,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 00:47:00,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 00:47:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1310 transitions. [2023-08-31 00:47:00,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43521594684385384 [2023-08-31 00:47:00,294 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1310 transitions. [2023-08-31 00:47:00,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1310 transitions. [2023-08-31 00:47:00,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:47:00,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1310 transitions. [2023-08-31 00:47:00,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:47:00,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:47:00,301 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 602.0) internal successors, (3612), 6 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:47:00,302 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 365 flow. Second operand 5 states and 1310 transitions. [2023-08-31 00:47:00,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 101 transitions, 855 flow [2023-08-31 00:47:00,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 101 transitions, 799 flow, removed 21 selfloop flow, removed 6 redundant places. [2023-08-31 00:47:00,312 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 401 flow [2023-08-31 00:47:00,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-08-31 00:47:00,313 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2023-08-31 00:47:00,313 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 401 flow [2023-08-31 00:47:00,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 252.4) internal successors, (1262), 5 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:47:00,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:47:00,314 INFO L208 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] [2023-08-31 00:47:00,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 00:47:00,314 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 00:47:00,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:47:00,315 INFO L85 PathProgramCache]: Analyzing trace with hash -642179503, now seen corresponding path program 1 times [2023-08-31 00:47:00,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:47:00,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994590982] [2023-08-31 00:47:00,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:47:00,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:47:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:47:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 00:47:00,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:47:00,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994590982] [2023-08-31 00:47:00,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994590982] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:47:00,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249836222] [2023-08-31 00:47:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:47:00,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:47:00,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:47:00,497 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) [2023-08-31 00:47:00,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 00:47:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:47:00,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 00:47:00,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:47:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 00:47:00,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 00:47:01,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 00:47:01,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 222 [2023-08-31 00:47:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 00:47:01,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249836222] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 00:47:01,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 00:47:01,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 11 [2023-08-31 00:47:01,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14369572] [2023-08-31 00:47:01,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:47:01,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 00:47:01,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:47:01,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 00:47:01,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-31 00:47:01,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 602 [2023-08-31 00:47:01,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 401 flow. Second operand has 6 states, 6 states have (on average 242.83333333333334) internal successors, (1457), 6 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:47:01,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:47:01,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 602 [2023-08-31 00:47:01,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:47:01,736 INFO L130 PetriNetUnfolder]: 2312/3546 cut-off events. [2023-08-31 00:47:01,736 INFO L131 PetriNetUnfolder]: For 7720/7720 co-relation queries the response was YES. [2023-08-31 00:47:01,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12013 conditions, 3546 events. 2312/3546 cut-off events. For 7720/7720 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17305 event pairs, 667 based on Foata normal form. 6/3552 useless extension candidates. Maximal degree in co-relation 10955. Up to 1306 conditions per place. [2023-08-31 00:47:01,760 INFO L137 encePairwiseOnDemand]: 595/602 looper letters, 81 selfloop transitions, 11 changer transitions 20/112 dead transitions. [2023-08-31 00:47:01,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 112 transitions, 927 flow [2023-08-31 00:47:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 00:47:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 00:47:01,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1752 transitions. [2023-08-31 00:47:01,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41575700047460845 [2023-08-31 00:47:01,765 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1752 transitions. [2023-08-31 00:47:01,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1752 transitions. [2023-08-31 00:47:01,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:47:01,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1752 transitions. [2023-08-31 00:47:01,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 250.28571428571428) internal successors, (1752), 7 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:47:01,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 602.0) internal successors, (4816), 8 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:47:01,775 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 602.0) internal successors, (4816), 8 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:47:01,775 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 401 flow. Second operand 7 states and 1752 transitions. [2023-08-31 00:47:01,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 112 transitions, 927 flow [2023-08-31 00:47:01,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 112 transitions, 915 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-31 00:47:01,786 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 431 flow [2023-08-31 00:47:01,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=431, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2023-08-31 00:47:01,787 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2023-08-31 00:47:01,787 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 431 flow [2023-08-31 00:47:01,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.83333333333334) internal successors, (1457), 6 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:47:01,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:47:01,788 INFO L208 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] [2023-08-31 00:47:01,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 00:47:01,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:47:01,995 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 00:47:01,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:47:01,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1317452410, now seen corresponding path program 1 times [2023-08-31 00:47:01,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:47:01,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681379198] [2023-08-31 00:47:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:47:01,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:47:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:47:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 00:47:02,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:47:02,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681379198] [2023-08-31 00:47:02,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681379198] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:47:02,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992449687] [2023-08-31 00:47:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:47:02,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:47:02,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:47:02,656 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) [2023-08-31 00:47:02,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 00:47:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:47:02,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-31 00:47:02,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:47:02,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 00:47:02,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-08-31 00:47:03,043 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 00:47:03,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-31 00:47:03,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 00:47:03,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 00:47:03,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 00:47:03,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 00:47:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:47:03,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 00:47:05,450 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse17 (* c_~i_AB~0 4)) (.cse18 (* c_~i_BC~0 4)) (.cse19 (* c_~i_AC~0 4))) (let ((.cse0 (= c_~i_AB~0 c_~i_AC~0)) (.cse5 (+ c_~A~0.offset .cse19)) (.cse6 (+ .cse19 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse2 (+ .cse18 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (+ .cse18 c_~B~0.offset)) (.cse10 (+ c_~B~0.offset .cse17)) (.cse12 (+ c_~A~0.offset .cse17)) (.cse8 (< c_~i_AC~0 c_~Cn~0))) (and (or .cse0 (forall ((v_ArrVal_403 (Array Int Int)) (v_ArrVal_402 (Array Int Int)) (v_ArrVal_404 (Array Int Int)) (~A~0.base Int)) (let ((.cse3 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_402) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_403) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (let ((.cse1 (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (< (select .cse1 .cse2) (select (select .cse3 c_~B~0.base) .cse4)) (<= (select (select .cse3 ~A~0.base) .cse5) (select .cse1 .cse6))))))) (or .cse0 (forall ((v_ArrVal_403 (Array Int Int)) (v_ArrVal_402 (Array Int Int)) (v_ArrVal_404 (Array Int Int))) (let ((.cse7 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_402) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_403) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (< (select (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse2) (select (select .cse7 c_~B~0.base) .cse4)))) .cse8) (forall ((v_ArrVal_403 (Array Int Int)) (v_ArrVal_402 (Array Int Int)) (v_ArrVal_404 (Array Int Int))) (let ((.cse14 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_402) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_403) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (let ((.cse13 (select .cse14 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse9 (select .cse14 c_~B~0.base))) (or (forall ((~A~0.base Int)) (let ((.cse11 (select .cse14 ~A~0.base))) (or (< (select .cse9 .cse10) (select .cse11 .cse12)) (<= (select .cse11 .cse5) (select .cse13 .cse6))))) (< (select .cse13 .cse2) (select .cse9 .cse4)))))) (or (forall ((v_ArrVal_403 (Array Int Int)) (v_ArrVal_402 (Array Int Int)) (v_ArrVal_404 (Array Int Int)) (~A~0.base Int)) (let ((.cse15 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_402) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_403) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (let ((.cse16 (select .cse15 c_~B~0.base))) (or (< (select (select .cse15 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse2) (select .cse16 .cse4)) (< (select .cse16 .cse10) (select (select .cse15 ~A~0.base) .cse12)))))) .cse8)))) is different from false [2023-08-31 00:47:06,294 INFO L321 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2023-08-31 00:47:06,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 70 [2023-08-31 00:47:06,318 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 00:47:06,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 12048 treesize of output 11180 [2023-08-31 00:47:06,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 00:47:06,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1382 treesize of output 1230 [2023-08-31 00:47:06,533 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 00:47:06,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1222 treesize of output 1150 [2023-08-31 00:47:06,560 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 00:47:06,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1142 treesize of output 830 [2023-08-31 00:47:17,752 INFO L321 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2023-08-31 00:47:17,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 199 treesize of output 105 [2023-08-31 00:47:17,924 INFO L321 Elim1Store]: treesize reduction 4, result has 97.2 percent of original size [2023-08-31 00:47:17,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 36101 treesize of output 33545 [2023-08-31 00:47:18,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 00:47:18,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2763 treesize of output 2511 [2023-08-31 00:47:18,496 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 00:47:18,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2443 treesize of output 2351 [2023-08-31 00:47:18,608 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 00:47:18,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2283 treesize of output 1711 Killed by 15