./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/rfi002_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/rfi002_tso.i -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 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:25:11,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:25:11,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:25:11,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:25:11,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:25:11,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:25:11,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:25:11,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:25:11,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:25:11,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:25:11,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:25:11,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:25:11,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:25:11,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:25:11,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:25:11,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:25:11,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:25:11,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:25:11,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:25:11,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:25:11,396 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:25:11,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:25:11,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:25:11,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:25:11,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:25:11,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:25:11,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:25:11,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:25:11,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:25:11,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:25:11,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:25:11,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:25:11,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:25:11,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:25:11,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:25:11,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:25:11,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:25:11,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:25:11,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:25:11,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:25:11,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:25:11,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:25:11,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:25:11,457 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:25:11,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:25:11,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:25:11,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:25:11,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:25:11,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:25:11,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:25:11,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:25:11,460 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:25:11,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:25:11,461 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:25:11,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:25:11,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:25:11,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:25:11,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:25:11,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:25:11,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:25:11,462 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:25:11,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:25:11,463 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:25:11,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:25:11,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:25:11,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:25:11,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:25:11,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:25:11,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:25:11,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:25:11,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:25:11,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:25:11,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:25:11,465 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:25:11,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:25:11,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:25:11,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a [2022-07-22 21:25:11,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:25:11,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:25:11,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:25:11,717 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:25:11,717 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:25:11,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2022-07-22 21:25:11,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc52e0243/fd74beacc52b42db852b287435efc6a1/FLAGa4aaf19ca [2022-07-22 21:25:12,275 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:25:12,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2022-07-22 21:25:12,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc52e0243/fd74beacc52b42db852b287435efc6a1/FLAGa4aaf19ca [2022-07-22 21:25:12,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc52e0243/fd74beacc52b42db852b287435efc6a1 [2022-07-22 21:25:12,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:25:12,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:25:12,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:25:12,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:25:12,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:25:12,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:25:12" (1/1) ... [2022-07-22 21:25:12,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d19efc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:12, skipping insertion in model container [2022-07-22 21:25:12,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:25:12" (1/1) ... [2022-07-22 21:25:12,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:25:12,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:25:12,943 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi002_tso.i[987,1000] [2022-07-22 21:25:13,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:25:13,169 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:25:13,179 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi002_tso.i[987,1000] [2022-07-22 21:25:13,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:25:13,318 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:25:13,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:13 WrapperNode [2022-07-22 21:25:13,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:25:13,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:25:13,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:25:13,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:25:13,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:13" (1/1) ... [2022-07-22 21:25:13,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:13" (1/1) ... [2022-07-22 21:25:13,411 INFO L137 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 551 [2022-07-22 21:25:13,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:25:13,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:25:13,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:25:13,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:25:13,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:13" (1/1) ... [2022-07-22 21:25:13,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:13" (1/1) ... [2022-07-22 21:25:13,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:13" (1/1) ... [2022-07-22 21:25:13,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:13" (1/1) ... [2022-07-22 21:25:13,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:13" (1/1) ... [2022-07-22 21:25:13,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:13" (1/1) ... [2022-07-22 21:25:13,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:13" (1/1) ... [2022-07-22 21:25:13,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:25:13,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:25:13,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:25:13,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:25:13,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:13" (1/1) ... [2022-07-22 21:25:13,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:25:13,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:25:13,524 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) [2022-07-22 21:25:13,544 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 [2022-07-22 21:25:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:25:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:25:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:25:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:25:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:25:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-22 21:25:13,563 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-22 21:25:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-22 21:25:13,563 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-22 21:25:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:25:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:25:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:25:13,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:25:13,565 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:25:13,753 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:25:13,754 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:25:14,531 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:25:15,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:25:15,139 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:25:15,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:25:15 BoogieIcfgContainer [2022-07-22 21:25:15,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:25:15,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:25:15,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:25:15,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:25:15,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:25:12" (1/3) ... [2022-07-22 21:25:15,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f9721d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:25:15, skipping insertion in model container [2022-07-22 21:25:15,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:13" (2/3) ... [2022-07-22 21:25:15,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f9721d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:25:15, skipping insertion in model container [2022-07-22 21:25:15,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:25:15" (3/3) ... [2022-07-22 21:25:15,148 INFO L111 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2022-07-22 21:25:15,153 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:25:15,160 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:25:15,160 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-22 21:25:15,161 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:25:15,245 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:25:15,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 114 transitions, 238 flow [2022-07-22 21:25:15,306 INFO L129 PetriNetUnfolder]: 2/112 cut-off events. [2022-07-22 21:25:15,306 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:25:15,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2022-07-22 21:25:15,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 114 transitions, 238 flow [2022-07-22 21:25:15,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 112 transitions, 230 flow [2022-07-22 21:25:15,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:25:15,326 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1a93db1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4df53007 [2022-07-22 21:25:15,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:25:15,338 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2022-07-22 21:25:15,338 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:25:15,339 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:15,339 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:15,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:15,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:15,344 INFO L85 PathProgramCache]: Analyzing trace with hash 391948507, now seen corresponding path program 1 times [2022-07-22 21:25:15,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:15,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759783420] [2022-07-22 21:25:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:15,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:15,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:15,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759783420] [2022-07-22 21:25:15,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759783420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:15,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:15,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:25:15,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409115817] [2022-07-22 21:25:15,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:15,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:25:15,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:15,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:25:15,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:25:15,641 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2022-07-22 21:25:15,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2022-07-22 21:25:15,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:15,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2022-07-22 21:25:15,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:15,833 INFO L129 PetriNetUnfolder]: 111/381 cut-off events. [2022-07-22 21:25:15,834 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-22 21:25:15,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 381 events. 111/381 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1603 event pairs, 9 based on Foata normal form. 20/358 useless extension candidates. Maximal degree in co-relation 532. Up to 175 conditions per place. [2022-07-22 21:25:15,840 INFO L132 encePairwiseOnDemand]: 109/114 looper letters, 17 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2022-07-22 21:25:15,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 113 transitions, 270 flow [2022-07-22 21:25:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:25:15,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:25:15,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2022-07-22 21:25:15,858 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9122807017543859 [2022-07-22 21:25:15,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2022-07-22 21:25:15,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2022-07-22 21:25:15,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:15,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2022-07-22 21:25:15,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2022-07-22 21:25:15,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2022-07-22 21:25:15,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2022-07-22 21:25:15,876 INFO L186 Difference]: Start difference. First operand has 117 places, 112 transitions, 230 flow. Second operand 3 states and 312 transitions. [2022-07-22 21:25:15,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 113 transitions, 270 flow [2022-07-22 21:25:15,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:25:15,885 INFO L242 Difference]: Finished difference. Result has 115 places, 108 transitions, 224 flow [2022-07-22 21:25:15,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2022-07-22 21:25:15,891 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, -2 predicate places. [2022-07-22 21:25:15,891 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 224 flow [2022-07-22 21:25:15,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2022-07-22 21:25:15,892 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:15,893 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:15,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:25:15,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:15,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:15,896 INFO L85 PathProgramCache]: Analyzing trace with hash -734495959, now seen corresponding path program 1 times [2022-07-22 21:25:15,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:15,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762936444] [2022-07-22 21:25:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:15,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:15,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:15,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762936444] [2022-07-22 21:25:15,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762936444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:15,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:15,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:25:15,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252877392] [2022-07-22 21:25:15,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:15,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:25:15,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:15,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:25:15,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:25:15,987 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2022-07-22 21:25:15,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2022-07-22 21:25:15,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:15,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2022-07-22 21:25:15,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:16,142 INFO L129 PetriNetUnfolder]: 94/419 cut-off events. [2022-07-22 21:25:16,142 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-22 21:25:16,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 419 events. 94/419 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2013 event pairs, 26 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 553. Up to 117 conditions per place. [2022-07-22 21:25:16,146 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 16 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-07-22 21:25:16,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 268 flow [2022-07-22 21:25:16,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:25:16,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:25:16,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2022-07-22 21:25:16,149 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8976608187134503 [2022-07-22 21:25:16,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2022-07-22 21:25:16,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2022-07-22 21:25:16,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:16,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2022-07-22 21:25:16,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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) [2022-07-22 21:25:16,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2022-07-22 21:25:16,152 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2022-07-22 21:25:16,152 INFO L186 Difference]: Start difference. First operand has 115 places, 108 transitions, 224 flow. Second operand 3 states and 307 transitions. [2022-07-22 21:25:16,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 268 flow [2022-07-22 21:25:16,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:25:16,156 INFO L242 Difference]: Finished difference. Result has 114 places, 107 transitions, 222 flow [2022-07-22 21:25:16,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=114, PETRI_TRANSITIONS=107} [2022-07-22 21:25:16,157 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, -3 predicate places. [2022-07-22 21:25:16,157 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 107 transitions, 222 flow [2022-07-22 21:25:16,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2022-07-22 21:25:16,158 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:16,158 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:16,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:25:16,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:16,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:16,161 INFO L85 PathProgramCache]: Analyzing trace with hash 26389779, now seen corresponding path program 1 times [2022-07-22 21:25:16,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:16,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069034987] [2022-07-22 21:25:16,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:16,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:16,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:16,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069034987] [2022-07-22 21:25:16,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069034987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:16,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:16,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:25:16,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087911531] [2022-07-22 21:25:16,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:16,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:25:16,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:16,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:25:16,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:25:16,453 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2022-07-22 21:25:16,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 107 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 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) [2022-07-22 21:25:16,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:16,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2022-07-22 21:25:16,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:16,919 INFO L129 PetriNetUnfolder]: 336/1001 cut-off events. [2022-07-22 21:25:16,920 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-22 21:25:16,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1625 conditions, 1001 events. 336/1001 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6080 event pairs, 82 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1561. Up to 229 conditions per place. [2022-07-22 21:25:16,927 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 20 selfloop transitions, 2 changer transitions 52/153 dead transitions. [2022-07-22 21:25:16,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 153 transitions, 450 flow [2022-07-22 21:25:16,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:25:16,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:25:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 877 transitions. [2022-07-22 21:25:16,930 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.854775828460039 [2022-07-22 21:25:16,931 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 877 transitions. [2022-07-22 21:25:16,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 877 transitions. [2022-07-22 21:25:16,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:16,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 877 transitions. [2022-07-22 21:25:16,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.44444444444444) internal successors, (877), 9 states have internal predecessors, (877), 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) [2022-07-22 21:25:16,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 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) [2022-07-22 21:25:16,936 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 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) [2022-07-22 21:25:16,937 INFO L186 Difference]: Start difference. First operand has 114 places, 107 transitions, 222 flow. Second operand 9 states and 877 transitions. [2022-07-22 21:25:16,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 153 transitions, 450 flow [2022-07-22 21:25:16,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 153 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:25:16,941 INFO L242 Difference]: Finished difference. Result has 127 places, 97 transitions, 218 flow [2022-07-22 21:25:16,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=127, PETRI_TRANSITIONS=97} [2022-07-22 21:25:16,942 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 10 predicate places. [2022-07-22 21:25:16,942 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 97 transitions, 218 flow [2022-07-22 21:25:16,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 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) [2022-07-22 21:25:16,943 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:16,943 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:16,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:25:16,944 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:16,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:16,944 INFO L85 PathProgramCache]: Analyzing trace with hash -705378320, now seen corresponding path program 1 times [2022-07-22 21:25:16,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:16,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970603928] [2022-07-22 21:25:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:16,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:17,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:17,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970603928] [2022-07-22 21:25:17,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970603928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:17,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:17,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:25:17,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834323423] [2022-07-22 21:25:17,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:17,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:25:17,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:17,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:25:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:25:17,262 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 114 [2022-07-22 21:25:17,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 97 transitions, 218 flow. Second operand has 8 states, 8 states have (on average 88.875) internal successors, (711), 8 states have internal predecessors, (711), 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) [2022-07-22 21:25:17,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:17,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 114 [2022-07-22 21:25:17,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:17,643 INFO L129 PetriNetUnfolder]: 247/608 cut-off events. [2022-07-22 21:25:17,643 INFO L130 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2022-07-22 21:25:17,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 608 events. 247/608 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2647 event pairs, 154 based on Foata normal form. 15/590 useless extension candidates. Maximal degree in co-relation 1183. Up to 298 conditions per place. [2022-07-22 21:25:17,647 INFO L132 encePairwiseOnDemand]: 105/114 looper letters, 23 selfloop transitions, 5 changer transitions 31/135 dead transitions. [2022-07-22 21:25:17,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 135 transitions, 435 flow [2022-07-22 21:25:17,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:25:17,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:25:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1018 transitions. [2022-07-22 21:25:17,651 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8118022328548644 [2022-07-22 21:25:17,651 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1018 transitions. [2022-07-22 21:25:17,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1018 transitions. [2022-07-22 21:25:17,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:17,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1018 transitions. [2022-07-22 21:25:17,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 92.54545454545455) internal successors, (1018), 11 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) [2022-07-22 21:25:17,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 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) [2022-07-22 21:25:17,657 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 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) [2022-07-22 21:25:17,657 INFO L186 Difference]: Start difference. First operand has 127 places, 97 transitions, 218 flow. Second operand 11 states and 1018 transitions. [2022-07-22 21:25:17,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 135 transitions, 435 flow [2022-07-22 21:25:17,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 135 transitions, 401 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-22 21:25:17,663 INFO L242 Difference]: Finished difference. Result has 120 places, 99 transitions, 249 flow [2022-07-22 21:25:17,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=249, PETRI_PLACES=120, PETRI_TRANSITIONS=99} [2022-07-22 21:25:17,664 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 3 predicate places. [2022-07-22 21:25:17,665 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 99 transitions, 249 flow [2022-07-22 21:25:17,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.875) internal successors, (711), 8 states have internal predecessors, (711), 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) [2022-07-22 21:25:17,665 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:17,666 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:17,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:25:17,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:17,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:17,667 INFO L85 PathProgramCache]: Analyzing trace with hash -459322686, now seen corresponding path program 1 times [2022-07-22 21:25:17,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:17,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629333906] [2022-07-22 21:25:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:17,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:17,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:17,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629333906] [2022-07-22 21:25:17,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629333906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:17,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:17,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:25:17,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842733817] [2022-07-22 21:25:17,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:17,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:25:17,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:17,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:25:17,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:25:17,902 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2022-07-22 21:25:17,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 99 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 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) [2022-07-22 21:25:17,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:17,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2022-07-22 21:25:17,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:18,230 INFO L129 PetriNetUnfolder]: 167/495 cut-off events. [2022-07-22 21:25:18,230 INFO L130 PetriNetUnfolder]: For 473/473 co-relation queries the response was YES. [2022-07-22 21:25:18,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 495 events. 167/495 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2196 event pairs, 39 based on Foata normal form. 14/485 useless extension candidates. Maximal degree in co-relation 1061. Up to 126 conditions per place. [2022-07-22 21:25:18,233 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 24 selfloop transitions, 2 changer transitions 28/134 dead transitions. [2022-07-22 21:25:18,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 134 transitions, 506 flow [2022-07-22 21:25:18,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:25:18,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:25:18,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 865 transitions. [2022-07-22 21:25:18,237 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8430799220272904 [2022-07-22 21:25:18,237 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 865 transitions. [2022-07-22 21:25:18,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 865 transitions. [2022-07-22 21:25:18,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:18,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 865 transitions. [2022-07-22 21:25:18,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.11111111111111) internal successors, (865), 9 states have internal predecessors, (865), 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) [2022-07-22 21:25:18,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 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) [2022-07-22 21:25:18,241 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 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) [2022-07-22 21:25:18,242 INFO L186 Difference]: Start difference. First operand has 120 places, 99 transitions, 249 flow. Second operand 9 states and 865 transitions. [2022-07-22 21:25:18,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 134 transitions, 506 flow [2022-07-22 21:25:18,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 134 transitions, 483 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-07-22 21:25:18,246 INFO L242 Difference]: Finished difference. Result has 123 places, 99 transitions, 254 flow [2022-07-22 21:25:18,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=254, PETRI_PLACES=123, PETRI_TRANSITIONS=99} [2022-07-22 21:25:18,247 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 6 predicate places. [2022-07-22 21:25:18,247 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 99 transitions, 254 flow [2022-07-22 21:25:18,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 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) [2022-07-22 21:25:18,248 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:18,248 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:18,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:25:18,248 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:18,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:18,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1724920748, now seen corresponding path program 1 times [2022-07-22 21:25:18,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:18,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851533684] [2022-07-22 21:25:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:18,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:18,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:18,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851533684] [2022-07-22 21:25:18,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851533684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:18,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:18,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-22 21:25:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783935691] [2022-07-22 21:25:18,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:18,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 21:25:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 21:25:18,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-22 21:25:18,797 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 114 [2022-07-22 21:25:18,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 99 transitions, 254 flow. Second operand has 17 states, 17 states have (on average 79.47058823529412) internal successors, (1351), 17 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:18,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:18,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 114 [2022-07-22 21:25:18,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:19,645 INFO L129 PetriNetUnfolder]: 403/885 cut-off events. [2022-07-22 21:25:19,645 INFO L130 PetriNetUnfolder]: For 869/869 co-relation queries the response was YES. [2022-07-22 21:25:19,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 885 events. 403/885 cut-off events. For 869/869 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4347 event pairs, 38 based on Foata normal form. 12/875 useless extension candidates. Maximal degree in co-relation 2147. Up to 296 conditions per place. [2022-07-22 21:25:19,651 INFO L132 encePairwiseOnDemand]: 95/114 looper letters, 60 selfloop transitions, 24 changer transitions 39/190 dead transitions. [2022-07-22 21:25:19,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 190 transitions, 853 flow [2022-07-22 21:25:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:25:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:25:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1605 transitions. [2022-07-22 21:25:19,656 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7409972299168975 [2022-07-22 21:25:19,656 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1605 transitions. [2022-07-22 21:25:19,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1605 transitions. [2022-07-22 21:25:19,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:19,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1605 transitions. [2022-07-22 21:25:19,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 84.47368421052632) internal successors, (1605), 19 states have internal predecessors, (1605), 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) [2022-07-22 21:25:19,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 114.0) internal successors, (2280), 20 states have internal predecessors, (2280), 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) [2022-07-22 21:25:19,664 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 114.0) internal successors, (2280), 20 states have internal predecessors, (2280), 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) [2022-07-22 21:25:19,664 INFO L186 Difference]: Start difference. First operand has 123 places, 99 transitions, 254 flow. Second operand 19 states and 1605 transitions. [2022-07-22 21:25:19,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 190 transitions, 853 flow [2022-07-22 21:25:19,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 190 transitions, 795 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-07-22 21:25:19,671 INFO L242 Difference]: Finished difference. Result has 138 places, 117 transitions, 431 flow [2022-07-22 21:25:19,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=431, PETRI_PLACES=138, PETRI_TRANSITIONS=117} [2022-07-22 21:25:19,672 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 21 predicate places. [2022-07-22 21:25:19,672 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 117 transitions, 431 flow [2022-07-22 21:25:19,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 79.47058823529412) internal successors, (1351), 17 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:19,673 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:19,673 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:19,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:25:19,674 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:19,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:19,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1152284406, now seen corresponding path program 2 times [2022-07-22 21:25:19,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:19,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315430851] [2022-07-22 21:25:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:19,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:19,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:19,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315430851] [2022-07-22 21:25:19,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315430851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:19,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:19,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 21:25:19,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333225307] [2022-07-22 21:25:19,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:19,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 21:25:19,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:19,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 21:25:19,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-07-22 21:25:20,000 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-07-22 21:25:20,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 117 transitions, 431 flow. Second operand has 14 states, 14 states have (on average 84.57142857142857) internal successors, (1184), 14 states have internal predecessors, (1184), 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) [2022-07-22 21:25:20,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:20,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-07-22 21:25:20,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:20,704 INFO L129 PetriNetUnfolder]: 223/617 cut-off events. [2022-07-22 21:25:20,704 INFO L130 PetriNetUnfolder]: For 1660/2957 co-relation queries the response was YES. [2022-07-22 21:25:20,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 617 events. 223/617 cut-off events. For 1660/2957 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2809 event pairs, 55 based on Foata normal form. 28/596 useless extension candidates. Maximal degree in co-relation 1994. Up to 279 conditions per place. [2022-07-22 21:25:20,709 INFO L132 encePairwiseOnDemand]: 101/114 looper letters, 51 selfloop transitions, 21 changer transitions 15/163 dead transitions. [2022-07-22 21:25:20,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 163 transitions, 928 flow [2022-07-22 21:25:20,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 21:25:20,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-22 21:25:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1310 transitions. [2022-07-22 21:25:20,714 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660818713450293 [2022-07-22 21:25:20,714 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1310 transitions. [2022-07-22 21:25:20,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1310 transitions. [2022-07-22 21:25:20,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:20,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1310 transitions. [2022-07-22 21:25:20,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 87.33333333333333) internal successors, (1310), 15 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) [2022-07-22 21:25:20,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 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) [2022-07-22 21:25:20,721 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 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) [2022-07-22 21:25:20,721 INFO L186 Difference]: Start difference. First operand has 138 places, 117 transitions, 431 flow. Second operand 15 states and 1310 transitions. [2022-07-22 21:25:20,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 163 transitions, 928 flow [2022-07-22 21:25:20,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 163 transitions, 866 flow, removed 27 selfloop flow, removed 7 redundant places. [2022-07-22 21:25:20,731 INFO L242 Difference]: Finished difference. Result has 148 places, 130 transitions, 592 flow [2022-07-22 21:25:20,731 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=592, PETRI_PLACES=148, PETRI_TRANSITIONS=130} [2022-07-22 21:25:20,732 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 31 predicate places. [2022-07-22 21:25:20,732 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 130 transitions, 592 flow [2022-07-22 21:25:20,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.57142857142857) internal successors, (1184), 14 states have internal predecessors, (1184), 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) [2022-07-22 21:25:20,734 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:20,734 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:20,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:25:20,734 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:20,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:20,734 INFO L85 PathProgramCache]: Analyzing trace with hash 813395958, now seen corresponding path program 3 times [2022-07-22 21:25:20,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:20,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028633779] [2022-07-22 21:25:20,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:20,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:21,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:21,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028633779] [2022-07-22 21:25:21,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028633779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:21,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:21,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 21:25:21,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955518192] [2022-07-22 21:25:21,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:21,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 21:25:21,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:21,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 21:25:21,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-07-22 21:25:21,095 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-07-22 21:25:21,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 130 transitions, 592 flow. Second operand has 14 states, 14 states have (on average 84.57142857142857) internal successors, (1184), 14 states have internal predecessors, (1184), 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) [2022-07-22 21:25:21,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:21,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-07-22 21:25:21,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:21,868 INFO L129 PetriNetUnfolder]: 262/718 cut-off events. [2022-07-22 21:25:21,869 INFO L130 PetriNetUnfolder]: For 3742/5639 co-relation queries the response was YES. [2022-07-22 21:25:21,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2814 conditions, 718 events. 262/718 cut-off events. For 3742/5639 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3532 event pairs, 66 based on Foata normal form. 28/686 useless extension candidates. Maximal degree in co-relation 2713. Up to 263 conditions per place. [2022-07-22 21:25:21,876 INFO L132 encePairwiseOnDemand]: 102/114 looper letters, 55 selfloop transitions, 24 changer transitions 18/173 dead transitions. [2022-07-22 21:25:21,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 173 transitions, 1164 flow [2022-07-22 21:25:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 21:25:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-22 21:25:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1226 transitions. [2022-07-22 21:25:21,880 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.768170426065163 [2022-07-22 21:25:21,880 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1226 transitions. [2022-07-22 21:25:21,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1226 transitions. [2022-07-22 21:25:21,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:21,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1226 transitions. [2022-07-22 21:25:21,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 87.57142857142857) internal successors, (1226), 14 states have internal predecessors, (1226), 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) [2022-07-22 21:25:21,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 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) [2022-07-22 21:25:21,890 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 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) [2022-07-22 21:25:21,890 INFO L186 Difference]: Start difference. First operand has 148 places, 130 transitions, 592 flow. Second operand 14 states and 1226 transitions. [2022-07-22 21:25:21,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 173 transitions, 1164 flow [2022-07-22 21:25:21,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 173 transitions, 1101 flow, removed 24 selfloop flow, removed 7 redundant places. [2022-07-22 21:25:21,903 INFO L242 Difference]: Finished difference. Result has 158 places, 134 transitions, 690 flow [2022-07-22 21:25:21,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=690, PETRI_PLACES=158, PETRI_TRANSITIONS=134} [2022-07-22 21:25:21,906 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 41 predicate places. [2022-07-22 21:25:21,906 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 134 transitions, 690 flow [2022-07-22 21:25:21,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.57142857142857) internal successors, (1184), 14 states have internal predecessors, (1184), 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) [2022-07-22 21:25:21,907 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:21,907 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:21,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:25:21,908 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:21,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:21,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1874237520, now seen corresponding path program 4 times [2022-07-22 21:25:21,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:21,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558809589] [2022-07-22 21:25:21,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:21,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:22,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:22,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:22,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558809589] [2022-07-22 21:25:22,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558809589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:22,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:22,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-22 21:25:22,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113092222] [2022-07-22 21:25:22,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:22,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 21:25:22,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:22,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 21:25:22,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-07-22 21:25:22,440 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 114 [2022-07-22 21:25:22,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 134 transitions, 690 flow. Second operand has 17 states, 17 states have (on average 79.47058823529412) internal successors, (1351), 17 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:22,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:22,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 114 [2022-07-22 21:25:22,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:23,556 INFO L129 PetriNetUnfolder]: 516/1154 cut-off events. [2022-07-22 21:25:23,556 INFO L130 PetriNetUnfolder]: For 7135/7703 co-relation queries the response was YES. [2022-07-22 21:25:23,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4692 conditions, 1154 events. 516/1154 cut-off events. For 7135/7703 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6455 event pairs, 95 based on Foata normal form. 29/1160 useless extension candidates. Maximal degree in co-relation 4584. Up to 294 conditions per place. [2022-07-22 21:25:23,567 INFO L132 encePairwiseOnDemand]: 99/114 looper letters, 71 selfloop transitions, 31 changer transitions 56/225 dead transitions. [2022-07-22 21:25:23,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 225 transitions, 1773 flow [2022-07-22 21:25:23,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:25:23,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:25:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2002 transitions. [2022-07-22 21:25:23,572 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7317251461988304 [2022-07-22 21:25:23,573 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2002 transitions. [2022-07-22 21:25:23,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2002 transitions. [2022-07-22 21:25:23,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:23,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2002 transitions. [2022-07-22 21:25:23,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 83.41666666666667) internal successors, (2002), 24 states have internal predecessors, (2002), 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) [2022-07-22 21:25:23,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 114.0) internal successors, (2850), 25 states have internal predecessors, (2850), 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) [2022-07-22 21:25:23,583 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 114.0) internal successors, (2850), 25 states have internal predecessors, (2850), 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) [2022-07-22 21:25:23,583 INFO L186 Difference]: Start difference. First operand has 158 places, 134 transitions, 690 flow. Second operand 24 states and 2002 transitions. [2022-07-22 21:25:23,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 225 transitions, 1773 flow [2022-07-22 21:25:23,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 225 transitions, 1490 flow, removed 116 selfloop flow, removed 17 redundant places. [2022-07-22 21:25:23,600 INFO L242 Difference]: Finished difference. Result has 175 places, 134 transitions, 716 flow [2022-07-22 21:25:23,600 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=716, PETRI_PLACES=175, PETRI_TRANSITIONS=134} [2022-07-22 21:25:23,601 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 58 predicate places. [2022-07-22 21:25:23,601 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 134 transitions, 716 flow [2022-07-22 21:25:23,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 79.47058823529412) internal successors, (1351), 17 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:23,602 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:23,602 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:23,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:25:23,602 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:23,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:23,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2006059476, now seen corresponding path program 5 times [2022-07-22 21:25:23,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:23,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749029965] [2022-07-22 21:25:23,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:23,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:23,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:23,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749029965] [2022-07-22 21:25:23,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749029965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:23,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:23,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:25:23,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571132930] [2022-07-22 21:25:23,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:23,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:25:23,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:23,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:25:23,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:25:23,872 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-07-22 21:25:23,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 134 transitions, 716 flow. Second operand has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 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) [2022-07-22 21:25:23,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:23,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-07-22 21:25:23,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:24,598 INFO L129 PetriNetUnfolder]: 274/747 cut-off events. [2022-07-22 21:25:24,599 INFO L130 PetriNetUnfolder]: For 4856/8175 co-relation queries the response was YES. [2022-07-22 21:25:24,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 747 events. 274/747 cut-off events. For 4856/8175 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3814 event pairs, 57 based on Foata normal form. 31/719 useless extension candidates. Maximal degree in co-relation 3026. Up to 333 conditions per place. [2022-07-22 21:25:24,606 INFO L132 encePairwiseOnDemand]: 100/114 looper letters, 48 selfloop transitions, 22 changer transitions 28/175 dead transitions. [2022-07-22 21:25:24,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 175 transitions, 1370 flow [2022-07-22 21:25:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:25:24,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:25:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1143 transitions. [2022-07-22 21:25:24,609 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.771255060728745 [2022-07-22 21:25:24,609 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1143 transitions. [2022-07-22 21:25:24,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1143 transitions. [2022-07-22 21:25:24,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:24,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1143 transitions. [2022-07-22 21:25:24,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.92307692307692) internal successors, (1143), 13 states have internal predecessors, (1143), 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) [2022-07-22 21:25:24,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 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) [2022-07-22 21:25:24,614 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 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) [2022-07-22 21:25:24,615 INFO L186 Difference]: Start difference. First operand has 175 places, 134 transitions, 716 flow. Second operand 13 states and 1143 transitions. [2022-07-22 21:25:24,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 175 transitions, 1370 flow [2022-07-22 21:25:24,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 175 transitions, 1191 flow, removed 76 selfloop flow, removed 20 redundant places. [2022-07-22 21:25:24,629 INFO L242 Difference]: Finished difference. Result has 159 places, 141 transitions, 818 flow [2022-07-22 21:25:24,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=818, PETRI_PLACES=159, PETRI_TRANSITIONS=141} [2022-07-22 21:25:24,630 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 42 predicate places. [2022-07-22 21:25:24,630 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 141 transitions, 818 flow [2022-07-22 21:25:24,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 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) [2022-07-22 21:25:24,631 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:24,631 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:24,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:25:24,632 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:24,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:24,632 INFO L85 PathProgramCache]: Analyzing trace with hash -177062592, now seen corresponding path program 1 times [2022-07-22 21:25:24,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:24,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677663503] [2022-07-22 21:25:24,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:24,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:24,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:24,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677663503] [2022-07-22 21:25:24,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677663503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:24,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:24,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:25:24,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231223510] [2022-07-22 21:25:24,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:24,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:25:24,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:24,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:25:24,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:25:24,815 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 114 [2022-07-22 21:25:24,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 141 transitions, 818 flow. Second operand has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 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) [2022-07-22 21:25:24,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:24,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 114 [2022-07-22 21:25:24,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:25,155 INFO L129 PetriNetUnfolder]: 266/764 cut-off events. [2022-07-22 21:25:25,155 INFO L130 PetriNetUnfolder]: For 4681/8134 co-relation queries the response was YES. [2022-07-22 21:25:25,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3479 conditions, 764 events. 266/764 cut-off events. For 4681/8134 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4201 event pairs, 57 based on Foata normal form. 36/740 useless extension candidates. Maximal degree in co-relation 3375. Up to 342 conditions per place. [2022-07-22 21:25:25,164 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 44 selfloop transitions, 12 changer transitions 26/165 dead transitions. [2022-07-22 21:25:25,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 165 transitions, 1228 flow [2022-07-22 21:25:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:25:25,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:25:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 653 transitions. [2022-07-22 21:25:25,166 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.818295739348371 [2022-07-22 21:25:25,166 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 653 transitions. [2022-07-22 21:25:25,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 653 transitions. [2022-07-22 21:25:25,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:25,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 653 transitions. [2022-07-22 21:25:25,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.28571428571429) internal successors, (653), 7 states have internal predecessors, (653), 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) [2022-07-22 21:25:25,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2022-07-22 21:25:25,169 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2022-07-22 21:25:25,169 INFO L186 Difference]: Start difference. First operand has 159 places, 141 transitions, 818 flow. Second operand 7 states and 653 transitions. [2022-07-22 21:25:25,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 165 transitions, 1228 flow [2022-07-22 21:25:25,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 165 transitions, 1177 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-07-22 21:25:25,189 INFO L242 Difference]: Finished difference. Result has 156 places, 137 transitions, 784 flow [2022-07-22 21:25:25,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=784, PETRI_PLACES=156, PETRI_TRANSITIONS=137} [2022-07-22 21:25:25,190 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 39 predicate places. [2022-07-22 21:25:25,190 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 137 transitions, 784 flow [2022-07-22 21:25:25,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 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) [2022-07-22 21:25:25,191 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:25,191 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:25,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:25:25,191 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:25,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:25,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1211062210, now seen corresponding path program 2 times [2022-07-22 21:25:25,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:25,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196778816] [2022-07-22 21:25:25,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:25,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:25,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:25,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196778816] [2022-07-22 21:25:25,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196778816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:25,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:25,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 21:25:25,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431051573] [2022-07-22 21:25:25,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:25,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:25:25,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:25,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:25:25,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:25:25,407 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 114 [2022-07-22 21:25:25,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 137 transitions, 784 flow. Second operand has 9 states, 9 states have (on average 88.22222222222223) internal successors, (794), 9 states have internal predecessors, (794), 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) [2022-07-22 21:25:25,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:25,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 114 [2022-07-22 21:25:25,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:25,768 INFO L129 PetriNetUnfolder]: 225/692 cut-off events. [2022-07-22 21:25:25,768 INFO L130 PetriNetUnfolder]: For 5161/10185 co-relation queries the response was YES. [2022-07-22 21:25:25,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3236 conditions, 692 events. 225/692 cut-off events. For 5161/10185 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3670 event pairs, 65 based on Foata normal form. 34/673 useless extension candidates. Maximal degree in co-relation 3133. Up to 306 conditions per place. [2022-07-22 21:25:25,776 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 44 selfloop transitions, 13 changer transitions 27/163 dead transitions. [2022-07-22 21:25:25,776 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 163 transitions, 1217 flow [2022-07-22 21:25:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:25:25,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:25:25,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 732 transitions. [2022-07-22 21:25:25,778 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8026315789473685 [2022-07-22 21:25:25,778 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 732 transitions. [2022-07-22 21:25:25,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 732 transitions. [2022-07-22 21:25:25,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:25,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 732 transitions. [2022-07-22 21:25:25,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.5) internal successors, (732), 8 states have internal predecessors, (732), 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) [2022-07-22 21:25:25,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 states have internal predecessors, (1026), 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) [2022-07-22 21:25:25,781 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 states have internal predecessors, (1026), 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) [2022-07-22 21:25:25,782 INFO L186 Difference]: Start difference. First operand has 156 places, 137 transitions, 784 flow. Second operand 8 states and 732 transitions. [2022-07-22 21:25:25,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 163 transitions, 1217 flow [2022-07-22 21:25:25,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 163 transitions, 1173 flow, removed 16 selfloop flow, removed 5 redundant places. [2022-07-22 21:25:25,797 INFO L242 Difference]: Finished difference. Result has 159 places, 134 transitions, 787 flow [2022-07-22 21:25:25,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=787, PETRI_PLACES=159, PETRI_TRANSITIONS=134} [2022-07-22 21:25:25,797 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 42 predicate places. [2022-07-22 21:25:25,798 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 134 transitions, 787 flow [2022-07-22 21:25:25,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.22222222222223) internal successors, (794), 9 states have internal predecessors, (794), 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) [2022-07-22 21:25:25,798 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:25,798 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:25,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:25:25,799 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:25,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:25,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1329660998, now seen corresponding path program 3 times [2022-07-22 21:25:25,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:25,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204347168] [2022-07-22 21:25:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:25,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:26,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:26,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204347168] [2022-07-22 21:25:26,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204347168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:26,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:26,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 21:25:26,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445070604] [2022-07-22 21:25:26,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:26,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 21:25:26,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:26,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 21:25:26,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-22 21:25:26,090 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2022-07-22 21:25:26,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 134 transitions, 787 flow. Second operand has 13 states, 13 states have (on average 82.76923076923077) internal successors, (1076), 13 states have internal predecessors, (1076), 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) [2022-07-22 21:25:26,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:26,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2022-07-22 21:25:26,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:26,745 INFO L129 PetriNetUnfolder]: 447/1143 cut-off events. [2022-07-22 21:25:26,745 INFO L130 PetriNetUnfolder]: For 7083/7618 co-relation queries the response was YES. [2022-07-22 21:25:26,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5102 conditions, 1143 events. 447/1143 cut-off events. For 7083/7618 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6653 event pairs, 125 based on Foata normal form. 53/1145 useless extension candidates. Maximal degree in co-relation 4995. Up to 277 conditions per place. [2022-07-22 21:25:26,755 INFO L132 encePairwiseOnDemand]: 102/114 looper letters, 61 selfloop transitions, 18 changer transitions 67/217 dead transitions. [2022-07-22 21:25:26,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 217 transitions, 1940 flow [2022-07-22 21:25:26,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 21:25:26,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-22 21:25:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1322 transitions. [2022-07-22 21:25:26,758 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7730994152046784 [2022-07-22 21:25:26,758 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1322 transitions. [2022-07-22 21:25:26,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1322 transitions. [2022-07-22 21:25:26,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:26,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1322 transitions. [2022-07-22 21:25:26,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 88.13333333333334) internal successors, (1322), 15 states have internal predecessors, (1322), 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) [2022-07-22 21:25:26,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 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) [2022-07-22 21:25:26,764 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 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) [2022-07-22 21:25:26,764 INFO L186 Difference]: Start difference. First operand has 159 places, 134 transitions, 787 flow. Second operand 15 states and 1322 transitions. [2022-07-22 21:25:26,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 217 transitions, 1940 flow [2022-07-22 21:25:26,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 217 transitions, 1847 flow, removed 38 selfloop flow, removed 8 redundant places. [2022-07-22 21:25:26,783 INFO L242 Difference]: Finished difference. Result has 169 places, 131 transitions, 808 flow [2022-07-22 21:25:26,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=808, PETRI_PLACES=169, PETRI_TRANSITIONS=131} [2022-07-22 21:25:26,783 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 52 predicate places. [2022-07-22 21:25:26,784 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 131 transitions, 808 flow [2022-07-22 21:25:26,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 82.76923076923077) internal successors, (1076), 13 states have internal predecessors, (1076), 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) [2022-07-22 21:25:26,785 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:26,785 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:26,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:25:26,785 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:26,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:26,786 INFO L85 PathProgramCache]: Analyzing trace with hash 388887840, now seen corresponding path program 4 times [2022-07-22 21:25:26,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:26,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300843135] [2022-07-22 21:25:26,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:26,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:27,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:27,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300843135] [2022-07-22 21:25:27,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300843135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:27,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:27,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-22 21:25:27,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406230958] [2022-07-22 21:25:27,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:27,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 21:25:27,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:27,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 21:25:27,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-22 21:25:27,176 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2022-07-22 21:25:27,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 131 transitions, 808 flow. Second operand has 15 states, 15 states have (on average 83.6) internal successors, (1254), 15 states have internal predecessors, (1254), 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) [2022-07-22 21:25:27,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:27,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2022-07-22 21:25:27,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:27,823 INFO L129 PetriNetUnfolder]: 195/611 cut-off events. [2022-07-22 21:25:27,823 INFO L130 PetriNetUnfolder]: For 5404/11317 co-relation queries the response was YES. [2022-07-22 21:25:27,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3045 conditions, 611 events. 195/611 cut-off events. For 5404/11317 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3079 event pairs, 86 based on Foata normal form. 40/603 useless extension candidates. Maximal degree in co-relation 2931. Up to 190 conditions per place. [2022-07-22 21:25:27,829 INFO L132 encePairwiseOnDemand]: 99/114 looper letters, 57 selfloop transitions, 29 changer transitions 1/163 dead transitions. [2022-07-22 21:25:27,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 163 transitions, 1359 flow [2022-07-22 21:25:27,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:25:27,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:25:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1378 transitions. [2022-07-22 21:25:27,832 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7554824561403509 [2022-07-22 21:25:27,832 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1378 transitions. [2022-07-22 21:25:27,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1378 transitions. [2022-07-22 21:25:27,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:27,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1378 transitions. [2022-07-22 21:25:27,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 86.125) internal successors, (1378), 16 states have internal predecessors, (1378), 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) [2022-07-22 21:25:27,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 114.0) internal successors, (1938), 17 states have internal predecessors, (1938), 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) [2022-07-22 21:25:27,838 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 114.0) internal successors, (1938), 17 states have internal predecessors, (1938), 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) [2022-07-22 21:25:27,838 INFO L186 Difference]: Start difference. First operand has 169 places, 131 transitions, 808 flow. Second operand 16 states and 1378 transitions. [2022-07-22 21:25:27,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 163 transitions, 1359 flow [2022-07-22 21:25:27,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 163 transitions, 1211 flow, removed 47 selfloop flow, removed 16 redundant places. [2022-07-22 21:25:27,853 INFO L242 Difference]: Finished difference. Result has 165 places, 146 transitions, 997 flow [2022-07-22 21:25:27,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=997, PETRI_PLACES=165, PETRI_TRANSITIONS=146} [2022-07-22 21:25:27,854 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 48 predicate places. [2022-07-22 21:25:27,854 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 146 transitions, 997 flow [2022-07-22 21:25:27,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 83.6) internal successors, (1254), 15 states have internal predecessors, (1254), 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) [2022-07-22 21:25:27,855 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:27,855 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:27,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 21:25:27,855 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:27,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:27,856 INFO L85 PathProgramCache]: Analyzing trace with hash 105420936, now seen corresponding path program 1 times [2022-07-22 21:25:27,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:27,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911004289] [2022-07-22 21:25:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:27,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:28,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:28,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911004289] [2022-07-22 21:25:28,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911004289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:28,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:28,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 21:25:28,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499231520] [2022-07-22 21:25:28,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:28,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 21:25:28,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 21:25:28,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:25:28,545 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 114 [2022-07-22 21:25:28,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 146 transitions, 997 flow. Second operand has 16 states, 16 states have (on average 77.75) internal successors, (1244), 16 states have internal predecessors, (1244), 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) [2022-07-22 21:25:28,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:28,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 114 [2022-07-22 21:25:28,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:30,277 INFO L129 PetriNetUnfolder]: 410/1127 cut-off events. [2022-07-22 21:25:30,278 INFO L130 PetriNetUnfolder]: For 7707/8174 co-relation queries the response was YES. [2022-07-22 21:25:30,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4950 conditions, 1127 events. 410/1127 cut-off events. For 7707/8174 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6706 event pairs, 64 based on Foata normal form. 62/1152 useless extension candidates. Maximal degree in co-relation 4837. Up to 232 conditions per place. [2022-07-22 21:25:30,286 INFO L132 encePairwiseOnDemand]: 98/114 looper letters, 73 selfloop transitions, 32 changer transitions 95/265 dead transitions. [2022-07-22 21:25:30,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 265 transitions, 2620 flow [2022-07-22 21:25:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 21:25:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-22 21:25:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2514 transitions. [2022-07-22 21:25:30,295 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7113752122241087 [2022-07-22 21:25:30,295 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2514 transitions. [2022-07-22 21:25:30,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2514 transitions. [2022-07-22 21:25:30,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:30,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2514 transitions. [2022-07-22 21:25:30,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 81.09677419354838) internal successors, (2514), 31 states have internal predecessors, (2514), 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) [2022-07-22 21:25:30,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 114.0) internal successors, (3648), 32 states have internal predecessors, (3648), 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) [2022-07-22 21:25:30,305 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 114.0) internal successors, (3648), 32 states have internal predecessors, (3648), 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) [2022-07-22 21:25:30,305 INFO L186 Difference]: Start difference. First operand has 165 places, 146 transitions, 997 flow. Second operand 31 states and 2514 transitions. [2022-07-22 21:25:30,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 265 transitions, 2620 flow [2022-07-22 21:25:30,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 265 transitions, 2383 flow, removed 110 selfloop flow, removed 5 redundant places. [2022-07-22 21:25:30,325 INFO L242 Difference]: Finished difference. Result has 214 places, 140 transitions, 1015 flow [2022-07-22 21:25:30,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1015, PETRI_PLACES=214, PETRI_TRANSITIONS=140} [2022-07-22 21:25:30,325 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 97 predicate places. [2022-07-22 21:25:30,326 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 140 transitions, 1015 flow [2022-07-22 21:25:30,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 77.75) internal successors, (1244), 16 states have internal predecessors, (1244), 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) [2022-07-22 21:25:30,326 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:30,326 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:30,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:25:30,327 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:30,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:30,327 INFO L85 PathProgramCache]: Analyzing trace with hash -26874532, now seen corresponding path program 5 times [2022-07-22 21:25:30,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:30,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456634559] [2022-07-22 21:25:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:30,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:30,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:30,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456634559] [2022-07-22 21:25:30,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456634559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:30,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:30,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 21:25:30,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038432894] [2022-07-22 21:25:30,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:30,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 21:25:30,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:30,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 21:25:30,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-07-22 21:25:30,695 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2022-07-22 21:25:30,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 140 transitions, 1015 flow. Second operand has 14 states, 14 states have (on average 83.71428571428571) internal successors, (1172), 14 states have internal predecessors, (1172), 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) [2022-07-22 21:25:30,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:30,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2022-07-22 21:25:30,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:31,162 INFO L129 PetriNetUnfolder]: 135/438 cut-off events. [2022-07-22 21:25:31,162 INFO L130 PetriNetUnfolder]: For 5825/9708 co-relation queries the response was YES. [2022-07-22 21:25:31,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 438 events. 135/438 cut-off events. For 5825/9708 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1847 event pairs, 46 based on Foata normal form. 20/411 useless extension candidates. Maximal degree in co-relation 2252. Up to 152 conditions per place. [2022-07-22 21:25:31,167 INFO L132 encePairwiseOnDemand]: 103/114 looper letters, 47 selfloop transitions, 22 changer transitions 17/166 dead transitions. [2022-07-22 21:25:31,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 166 transitions, 1670 flow [2022-07-22 21:25:31,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 21:25:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-22 21:25:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1205 transitions. [2022-07-22 21:25:31,170 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7550125313283208 [2022-07-22 21:25:31,170 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1205 transitions. [2022-07-22 21:25:31,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1205 transitions. [2022-07-22 21:25:31,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:31,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1205 transitions. [2022-07-22 21:25:31,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 86.07142857142857) internal successors, (1205), 14 states have internal predecessors, (1205), 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) [2022-07-22 21:25:31,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 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) [2022-07-22 21:25:31,175 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 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) [2022-07-22 21:25:31,175 INFO L186 Difference]: Start difference. First operand has 214 places, 140 transitions, 1015 flow. Second operand 14 states and 1205 transitions. [2022-07-22 21:25:31,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 166 transitions, 1670 flow [2022-07-22 21:25:31,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 166 transitions, 1337 flow, removed 153 selfloop flow, removed 34 redundant places. [2022-07-22 21:25:31,193 INFO L242 Difference]: Finished difference. Result has 176 places, 140 transitions, 920 flow [2022-07-22 21:25:31,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=920, PETRI_PLACES=176, PETRI_TRANSITIONS=140} [2022-07-22 21:25:31,193 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 59 predicate places. [2022-07-22 21:25:31,194 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 140 transitions, 920 flow [2022-07-22 21:25:31,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 83.71428571428571) internal successors, (1172), 14 states have internal predecessors, (1172), 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) [2022-07-22 21:25:31,194 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:31,194 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:31,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 21:25:31,195 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:31,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:31,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1387342515, now seen corresponding path program 1 times [2022-07-22 21:25:31,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:31,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037501791] [2022-07-22 21:25:31,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:31,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:31,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:31,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037501791] [2022-07-22 21:25:31,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037501791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:31,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:31,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:25:31,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471874026] [2022-07-22 21:25:31,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:31,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:25:31,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:31,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:25:31,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:25:31,445 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2022-07-22 21:25:31,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 140 transitions, 920 flow. Second operand has 10 states, 10 states have (on average 84.5) internal successors, (845), 10 states have internal predecessors, (845), 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) [2022-07-22 21:25:31,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:31,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2022-07-22 21:25:31,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:31,724 INFO L129 PetriNetUnfolder]: 128/433 cut-off events. [2022-07-22 21:25:31,724 INFO L130 PetriNetUnfolder]: For 3057/6865 co-relation queries the response was YES. [2022-07-22 21:25:31,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 433 events. 128/433 cut-off events. For 3057/6865 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1912 event pairs, 34 based on Foata normal form. 21/404 useless extension candidates. Maximal degree in co-relation 1926. Up to 182 conditions per place. [2022-07-22 21:25:31,729 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 50 selfloop transitions, 15 changer transitions 12/157 dead transitions. [2022-07-22 21:25:31,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 157 transitions, 1270 flow [2022-07-22 21:25:31,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:25:31,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:25:31,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 786 transitions. [2022-07-22 21:25:31,731 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660818713450293 [2022-07-22 21:25:31,731 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 786 transitions. [2022-07-22 21:25:31,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 786 transitions. [2022-07-22 21:25:31,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:31,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 786 transitions. [2022-07-22 21:25:31,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.33333333333333) internal successors, (786), 9 states have internal predecessors, (786), 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) [2022-07-22 21:25:31,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 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) [2022-07-22 21:25:31,734 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 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) [2022-07-22 21:25:31,734 INFO L186 Difference]: Start difference. First operand has 176 places, 140 transitions, 920 flow. Second operand 9 states and 786 transitions. [2022-07-22 21:25:31,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 157 transitions, 1270 flow [2022-07-22 21:25:31,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 157 transitions, 1212 flow, removed 12 selfloop flow, removed 13 redundant places. [2022-07-22 21:25:31,746 INFO L242 Difference]: Finished difference. Result has 170 places, 141 transitions, 930 flow [2022-07-22 21:25:31,747 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=930, PETRI_PLACES=170, PETRI_TRANSITIONS=141} [2022-07-22 21:25:31,747 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 53 predicate places. [2022-07-22 21:25:31,747 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 141 transitions, 930 flow [2022-07-22 21:25:31,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.5) internal successors, (845), 10 states have internal predecessors, (845), 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) [2022-07-22 21:25:31,748 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:31,748 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:31,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 21:25:31,748 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:31,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:31,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2064396969, now seen corresponding path program 2 times [2022-07-22 21:25:31,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:31,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313648302] [2022-07-22 21:25:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:31,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:32,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:32,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313648302] [2022-07-22 21:25:32,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313648302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:32,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:32,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 21:25:32,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274917622] [2022-07-22 21:25:32,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:32,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 21:25:32,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:32,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 21:25:32,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-22 21:25:32,130 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2022-07-22 21:25:32,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 141 transitions, 930 flow. Second operand has 13 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 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) [2022-07-22 21:25:32,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:32,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2022-07-22 21:25:32,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:32,663 INFO L129 PetriNetUnfolder]: 127/429 cut-off events. [2022-07-22 21:25:32,663 INFO L130 PetriNetUnfolder]: For 3125/6825 co-relation queries the response was YES. [2022-07-22 21:25:32,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 429 events. 127/429 cut-off events. For 3125/6825 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1880 event pairs, 47 based on Foata normal form. 24/405 useless extension candidates. Maximal degree in co-relation 1933. Up to 161 conditions per place. [2022-07-22 21:25:32,666 INFO L132 encePairwiseOnDemand]: 98/114 looper letters, 35 selfloop transitions, 31 changer transitions 14/159 dead transitions. [2022-07-22 21:25:32,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 159 transitions, 1304 flow [2022-07-22 21:25:32,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:25:32,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:25:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1106 transitions. [2022-07-22 21:25:32,670 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7462887989203779 [2022-07-22 21:25:32,670 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1106 transitions. [2022-07-22 21:25:32,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1106 transitions. [2022-07-22 21:25:32,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:32,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1106 transitions. [2022-07-22 21:25:32,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 85.07692307692308) internal successors, (1106), 13 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:32,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 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) [2022-07-22 21:25:32,674 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 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) [2022-07-22 21:25:32,674 INFO L186 Difference]: Start difference. First operand has 170 places, 141 transitions, 930 flow. Second operand 13 states and 1106 transitions. [2022-07-22 21:25:32,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 159 transitions, 1304 flow [2022-07-22 21:25:32,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 159 transitions, 1262 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-07-22 21:25:32,686 INFO L242 Difference]: Finished difference. Result has 175 places, 139 transitions, 940 flow [2022-07-22 21:25:32,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=940, PETRI_PLACES=175, PETRI_TRANSITIONS=139} [2022-07-22 21:25:32,686 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 58 predicate places. [2022-07-22 21:25:32,686 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 139 transitions, 940 flow [2022-07-22 21:25:32,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 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) [2022-07-22 21:25:32,687 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:32,687 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:32,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 21:25:32,687 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:32,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:32,688 INFO L85 PathProgramCache]: Analyzing trace with hash -850323535, now seen corresponding path program 3 times [2022-07-22 21:25:32,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:32,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264257247] [2022-07-22 21:25:32,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:32,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:32,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:32,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264257247] [2022-07-22 21:25:32,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264257247] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:32,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:32,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 21:25:32,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143379218] [2022-07-22 21:25:32,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:32,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 21:25:32,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:32,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 21:25:32,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-22 21:25:32,975 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 114 [2022-07-22 21:25:32,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 139 transitions, 940 flow. Second operand has 14 states, 14 states have (on average 79.92857142857143) internal successors, (1119), 14 states have internal predecessors, (1119), 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) [2022-07-22 21:25:32,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:32,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 114 [2022-07-22 21:25:32,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:33,538 INFO L129 PetriNetUnfolder]: 267/790 cut-off events. [2022-07-22 21:25:33,538 INFO L130 PetriNetUnfolder]: For 5674/6116 co-relation queries the response was YES. [2022-07-22 21:25:33,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3404 conditions, 790 events. 267/790 cut-off events. For 5674/6116 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4381 event pairs, 105 based on Foata normal form. 44/796 useless extension candidates. Maximal degree in co-relation 3290. Up to 266 conditions per place. [2022-07-22 21:25:33,550 INFO L132 encePairwiseOnDemand]: 99/114 looper letters, 71 selfloop transitions, 21 changer transitions 43/202 dead transitions. [2022-07-22 21:25:33,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 202 transitions, 1876 flow [2022-07-22 21:25:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:25:33,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:25:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1428 transitions. [2022-07-22 21:25:33,554 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2022-07-22 21:25:33,554 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1428 transitions. [2022-07-22 21:25:33,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1428 transitions. [2022-07-22 21:25:33,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:33,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1428 transitions. [2022-07-22 21:25:33,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 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) [2022-07-22 21:25:33,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 114.0) internal successors, (2052), 18 states have internal predecessors, (2052), 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) [2022-07-22 21:25:33,589 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 114.0) internal successors, (2052), 18 states have internal predecessors, (2052), 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) [2022-07-22 21:25:33,589 INFO L186 Difference]: Start difference. First operand has 175 places, 139 transitions, 940 flow. Second operand 17 states and 1428 transitions. [2022-07-22 21:25:33,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 202 transitions, 1876 flow [2022-07-22 21:25:33,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 202 transitions, 1791 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-07-22 21:25:33,607 INFO L242 Difference]: Finished difference. Result has 186 places, 137 transitions, 913 flow [2022-07-22 21:25:33,608 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=913, PETRI_PLACES=186, PETRI_TRANSITIONS=137} [2022-07-22 21:25:33,608 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 69 predicate places. [2022-07-22 21:25:33,608 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 137 transitions, 913 flow [2022-07-22 21:25:33,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 79.92857142857143) internal successors, (1119), 14 states have internal predecessors, (1119), 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) [2022-07-22 21:25:33,609 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:33,609 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:33,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 21:25:33,609 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:25:33,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:33,610 INFO L85 PathProgramCache]: Analyzing trace with hash -957608077, now seen corresponding path program 4 times [2022-07-22 21:25:33,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:33,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018572456] [2022-07-22 21:25:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:33,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:33,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:33,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018572456] [2022-07-22 21:25:33,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018572456] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:33,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:33,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:25:33,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238975154] [2022-07-22 21:25:33,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:33,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:25:33,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:25:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:25:33,824 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2022-07-22 21:25:33,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 137 transitions, 913 flow. Second operand has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 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) [2022-07-22 21:25:33,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:33,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2022-07-22 21:25:33,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:34,118 INFO L129 PetriNetUnfolder]: 106/352 cut-off events. [2022-07-22 21:25:34,118 INFO L130 PetriNetUnfolder]: For 2648/6023 co-relation queries the response was YES. [2022-07-22 21:25:34,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 352 events. 106/352 cut-off events. For 2648/6023 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1399 event pairs, 62 based on Foata normal form. 14/319 useless extension candidates. Maximal degree in co-relation 1637. Up to 165 conditions per place. [2022-07-22 21:25:34,120 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 0 selfloop transitions, 0 changer transitions 140/140 dead transitions. [2022-07-22 21:25:34,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 140 transitions, 1099 flow [2022-07-22 21:25:34,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:25:34,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:25:34,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 796 transitions. [2022-07-22 21:25:34,122 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7758284600389863 [2022-07-22 21:25:34,123 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 796 transitions. [2022-07-22 21:25:34,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 796 transitions. [2022-07-22 21:25:34,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:34,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 796 transitions. [2022-07-22 21:25:34,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.44444444444444) internal successors, (796), 9 states have internal predecessors, (796), 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) [2022-07-22 21:25:34,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 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) [2022-07-22 21:25:34,129 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 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) [2022-07-22 21:25:34,129 INFO L186 Difference]: Start difference. First operand has 186 places, 137 transitions, 913 flow. Second operand 9 states and 796 transitions. [2022-07-22 21:25:34,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 140 transitions, 1099 flow [2022-07-22 21:25:34,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 140 transitions, 1043 flow, removed 16 selfloop flow, removed 14 redundant places. [2022-07-22 21:25:34,139 INFO L242 Difference]: Finished difference. Result has 169 places, 0 transitions, 0 flow [2022-07-22 21:25:34,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=169, PETRI_TRANSITIONS=0} [2022-07-22 21:25:34,140 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 52 predicate places. [2022-07-22 21:25:34,140 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 0 transitions, 0 flow [2022-07-22 21:25:34,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 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) [2022-07-22 21:25:34,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-07-22 21:25:34,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-22 21:25:34,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-07-22 21:25:34,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-07-22 21:25:34,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-07-22 21:25:34,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-22 21:25:34,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-22 21:25:34,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 21:25:34,144 INFO L356 BasicCegarLoop]: Path program histogram: [5, 5, 4, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:34,149 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:25:34,149 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:25:34,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:25:34 BasicIcfg [2022-07-22 21:25:34,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:25:34,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:25:34,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:25:34,156 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:25:34,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:25:15" (3/4) ... [2022-07-22 21:25:34,158 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 21:25:34,171 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-22 21:25:34,171 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-22 21:25:34,185 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 139 nodes and edges [2022-07-22 21:25:34,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2022-07-22 21:25:34,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-07-22 21:25:34,187 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 21:25:34,250 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:25:34,250 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:25:34,251 INFO L158 Benchmark]: Toolchain (without parser) took 21505.61ms. Allocated memory was 86.0MB in the beginning and 446.7MB in the end (delta: 360.7MB). Free memory was 51.6MB in the beginning and 252.2MB in the end (delta: -200.6MB). Peak memory consumption was 159.9MB. Max. memory is 16.1GB. [2022-07-22 21:25:34,251 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 86.0MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:25:34,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 573.21ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 51.5MB in the beginning and 62.0MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 21:25:34,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.74ms. Allocated memory is still 104.9MB. Free memory was 62.0MB in the beginning and 57.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 21:25:34,252 INFO L158 Benchmark]: Boogie Preprocessor took 48.71ms. Allocated memory is still 104.9MB. Free memory was 57.8MB in the beginning and 54.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 21:25:34,253 INFO L158 Benchmark]: RCFGBuilder took 1673.34ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 54.2MB in the beginning and 58.4MB in the end (delta: -4.2MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2022-07-22 21:25:34,253 INFO L158 Benchmark]: TraceAbstraction took 19012.16ms. Allocated memory was 132.1MB in the beginning and 446.7MB in the end (delta: 314.6MB). Free memory was 57.5MB in the beginning and 258.5MB in the end (delta: -201.0MB). Peak memory consumption was 114.3MB. Max. memory is 16.1GB. [2022-07-22 21:25:34,253 INFO L158 Benchmark]: Witness Printer took 94.99ms. Allocated memory is still 446.7MB. Free memory was 258.5MB in the beginning and 252.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-22 21:25:34,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 86.0MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 573.21ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 51.5MB in the beginning and 62.0MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.74ms. Allocated memory is still 104.9MB. Free memory was 62.0MB in the beginning and 57.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.71ms. Allocated memory is still 104.9MB. Free memory was 57.8MB in the beginning and 54.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1673.34ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 54.2MB in the beginning and 58.4MB in the end (delta: -4.2MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. * TraceAbstraction took 19012.16ms. Allocated memory was 132.1MB in the beginning and 446.7MB in the end (delta: 314.6MB). Free memory was 57.5MB in the beginning and 258.5MB in the end (delta: -201.0MB). Peak memory consumption was 114.3MB. Max. memory is 16.1GB. * Witness Printer took 94.99ms. Allocated memory is still 446.7MB. Free memory was 258.5MB in the beginning and 252.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 136 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.9s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1053 SdHoareTripleChecker+Valid, 5.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1053 mSDsluCounter, 1305 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2126 mSDsCounter, 616 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4641 IncrementalHoareTripleChecker+Invalid, 5257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 616 mSolverCounterUnsat, 200 mSDtfsCounter, 4641 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 364 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1015occurred in iteration=15, InterpolantAutomatonStates: 259, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1694 NumberOfCodeBlocks, 1694 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1674 ConstructedInterpolants, 0 QuantifiedInterpolants, 14273 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-22 21:25:34,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE