./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:51:17,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:51:17,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:51:17,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:51:17,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:51:17,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:51:17,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:51:17,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:51:17,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:51:17,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:51:17,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:51:17,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:51:17,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:51:17,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:51:17,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:51:17,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:51:17,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:51:17,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:51:17,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:51:17,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:51:17,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:51:17,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:51:17,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:51:17,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:51:17,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:51:17,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:51:17,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:51:17,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:51:17,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:51:17,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:51:17,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:51:17,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:51:17,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:51:17,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:51:17,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:51:17,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:51:17,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:51:17,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:51:17,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:51:17,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:51:17,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:51:17,254 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 16:51:17,287 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:51:17,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:51:17,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:51:17,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:51:17,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:51:17,289 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:51:17,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:51:17,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:51:17,290 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:51:17,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:51:17,291 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:51:17,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:51:17,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:51:17,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:51:17,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:51:17,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:51:17,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:51:17,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:51:17,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:51:17,293 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:51:17,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:51:17,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:51:17,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:51:17,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:51:17,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:51:17,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:51:17,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:51:17,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:51:17,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:51:17,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:51:17,295 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:51:17,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:51:17,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:51:17,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:51:17,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d [2021-12-14 16:51:17,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:51:17,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:51:17,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:51:17,566 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:51:17,567 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:51:17,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2021-12-14 16:51:17,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01e0366c3/0985cdf322f04e7fb99ae8e299d625bc/FLAGe1052ea5b [2021-12-14 16:51:18,024 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:51:18,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2021-12-14 16:51:18,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01e0366c3/0985cdf322f04e7fb99ae8e299d625bc/FLAGe1052ea5b [2021-12-14 16:51:18,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01e0366c3/0985cdf322f04e7fb99ae8e299d625bc [2021-12-14 16:51:18,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:51:18,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:51:18,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:51:18,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:51:18,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:51:18,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:51:18" (1/1) ... [2021-12-14 16:51:18,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dea5c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:18, skipping insertion in model container [2021-12-14 16:51:18,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:51:18" (1/1) ... [2021-12-14 16:51:18,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:51:18,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:51:18,306 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2021-12-14 16:51:18,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:51:18,319 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:51:18,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2021-12-14 16:51:18,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:51:18,359 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:51:18,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:18 WrapperNode [2021-12-14 16:51:18,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:51:18,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:51:18,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:51:18,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:51:18,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:18" (1/1) ... [2021-12-14 16:51:18,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:18" (1/1) ... [2021-12-14 16:51:18,399 INFO L137 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 317 [2021-12-14 16:51:18,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:51:18,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:51:18,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:51:18,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:51:18,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:18" (1/1) ... [2021-12-14 16:51:18,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:18" (1/1) ... [2021-12-14 16:51:18,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:18" (1/1) ... [2021-12-14 16:51:18,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:18" (1/1) ... [2021-12-14 16:51:18,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:18" (1/1) ... [2021-12-14 16:51:18,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:18" (1/1) ... [2021-12-14 16:51:18,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:18" (1/1) ... [2021-12-14 16:51:18,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:51:18,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:51:18,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:51:18,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:51:18,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:18" (1/1) ... [2021-12-14 16:51:18,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:51:18,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:51:18,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 16:51:18,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 16:51:18,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:51:18,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 16:51:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 16:51:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 16:51:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-14 16:51:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-14 16:51:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-14 16:51:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-14 16:51:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-14 16:51:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-14 16:51:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:51:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-14 16:51:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-14 16:51:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 16:51:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:51:18,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:51:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 16:51:18,491 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-14 16:51:18,568 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:51:18,570 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:51:18,944 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:51:19,034 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:51:19,035 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-14 16:51:19,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:51:19 BoogieIcfgContainer [2021-12-14 16:51:19,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:51:19,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:51:19,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:51:19,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:51:19,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:51:18" (1/3) ... [2021-12-14 16:51:19,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e53111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:51:19, skipping insertion in model container [2021-12-14 16:51:19,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:18" (2/3) ... [2021-12-14 16:51:19,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e53111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:51:19, skipping insertion in model container [2021-12-14 16:51:19,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:51:19" (3/3) ... [2021-12-14 16:51:19,047 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2021-12-14 16:51:19,054 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-14 16:51:19,054 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:51:19,054 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 16:51:19,054 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-14 16:51:19,087 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,088 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,088 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,088 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,088 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,090 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,090 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,090 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,090 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,091 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,091 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,091 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,091 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,095 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,095 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,095 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,095 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,095 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,096 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,096 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,096 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,096 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,097 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,097 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,097 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,097 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,097 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,098 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,098 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,098 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,098 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,098 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,099 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,099 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,099 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,099 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,099 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,100 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,100 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,100 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,100 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,100 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,106 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,106 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,106 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,106 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,106 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,108 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,108 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,108 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,108 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,108 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,109 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,109 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,109 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,109 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,111 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,111 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,111 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,112 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,112 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,112 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,112 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,112 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,113 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,115 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,115 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,115 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,115 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~short17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,115 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,116 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,116 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,116 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,116 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,116 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,116 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~short17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,117 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,117 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,117 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,117 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,118 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,118 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,118 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,118 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,120 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,120 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,120 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,124 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,124 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,124 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,124 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,127 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,130 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,130 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,130 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,131 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,131 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,131 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,131 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,131 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,131 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~short17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,132 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,132 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,132 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,132 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,132 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-14 16:51:19,137 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-14 16:51:19,179 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:51:19,187 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 16:51:19,187 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-14 16:51:19,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 264 places, 279 transitions, 582 flow [2021-12-14 16:51:19,326 INFO L129 PetriNetUnfolder]: 25/276 cut-off events. [2021-12-14 16:51:19,326 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-14 16:51:19,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 276 events. 25/276 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 236. Up to 4 conditions per place. [2021-12-14 16:51:19,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 279 transitions, 582 flow [2021-12-14 16:51:19,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 265 transitions, 548 flow [2021-12-14 16:51:19,400 INFO L129 PetriNetUnfolder]: 25/264 cut-off events. [2021-12-14 16:51:19,400 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-14 16:51:19,400 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:51:19,402 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:51:19,402 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:51:19,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:51:19,411 INFO L85 PathProgramCache]: Analyzing trace with hash 457812310, now seen corresponding path program 1 times [2021-12-14 16:51:19,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:51:19,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959971409] [2021-12-14 16:51:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:51:19,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:51:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:51:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:51:19,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:51:19,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959971409] [2021-12-14 16:51:19,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959971409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:51:19,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:51:19,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 16:51:19,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185115290] [2021-12-14 16:51:19,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:51:19,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 16:51:19,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:51:19,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 16:51:19,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:51:19,733 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 279 [2021-12-14 16:51:19,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 265 transitions, 548 flow. Second operand has 2 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:19,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:51:19,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 279 [2021-12-14 16:51:19,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:51:19,909 INFO L129 PetriNetUnfolder]: 138/578 cut-off events. [2021-12-14 16:51:19,909 INFO L130 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2021-12-14 16:51:19,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 578 events. 138/578 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2010 event pairs, 55 based on Foata normal form. 106/615 useless extension candidates. Maximal degree in co-relation 561. Up to 180 conditions per place. [2021-12-14 16:51:19,917 INFO L132 encePairwiseOnDemand]: 262/279 looper letters, 13 selfloop transitions, 0 changer transitions 8/248 dead transitions. [2021-12-14 16:51:19,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 248 transitions, 540 flow [2021-12-14 16:51:19,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 16:51:19,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-14 16:51:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 526 transitions. [2021-12-14 16:51:19,935 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.942652329749104 [2021-12-14 16:51:19,936 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 526 transitions. [2021-12-14 16:51:19,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 526 transitions. [2021-12-14 16:51:19,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:51:19,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 526 transitions. [2021-12-14 16:51:19,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:19,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:19,955 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:19,956 INFO L186 Difference]: Start difference. First operand has 250 places, 265 transitions, 548 flow. Second operand 2 states and 526 transitions. [2021-12-14 16:51:19,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 248 transitions, 540 flow [2021-12-14 16:51:19,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 248 transitions, 528 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-14 16:51:19,969 INFO L242 Difference]: Finished difference. Result has 245 places, 240 transitions, 486 flow [2021-12-14 16:51:19,970 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=486, PETRI_PLACES=245, PETRI_TRANSITIONS=240} [2021-12-14 16:51:19,974 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, -5 predicate places. [2021-12-14 16:51:19,974 INFO L470 AbstractCegarLoop]: Abstraction has has 245 places, 240 transitions, 486 flow [2021-12-14 16:51:19,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:19,975 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:51:19,975 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:51:19,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:51:19,976 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:51:19,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:51:19,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1216024931, now seen corresponding path program 1 times [2021-12-14 16:51:19,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:51:19,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966410622] [2021-12-14 16:51:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:51:19,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:51:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:51:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:51:20,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:51:20,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966410622] [2021-12-14 16:51:20,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966410622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:51:20,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:51:20,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 16:51:20,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981901366] [2021-12-14 16:51:20,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:51:20,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 16:51:20,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:51:20,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 16:51:20,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:51:20,297 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 279 [2021-12-14 16:51:20,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 240 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:20,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:51:20,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 279 [2021-12-14 16:51:20,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:51:20,388 INFO L129 PetriNetUnfolder]: 128/521 cut-off events. [2021-12-14 16:51:20,388 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-12-14 16:51:20,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 521 events. 128/521 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1675 event pairs, 21 based on Foata normal form. 8/484 useless extension candidates. Maximal degree in co-relation 713. Up to 132 conditions per place. [2021-12-14 16:51:20,393 INFO L132 encePairwiseOnDemand]: 276/279 looper letters, 22 selfloop transitions, 2 changer transitions 0/247 dead transitions. [2021-12-14 16:51:20,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 247 transitions, 550 flow [2021-12-14 16:51:20,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 16:51:20,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-14 16:51:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 757 transitions. [2021-12-14 16:51:20,396 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9044205495818399 [2021-12-14 16:51:20,396 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 757 transitions. [2021-12-14 16:51:20,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 757 transitions. [2021-12-14 16:51:20,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:51:20,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 757 transitions. [2021-12-14 16:51:20,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:20,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:20,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:20,401 INFO L186 Difference]: Start difference. First operand has 245 places, 240 transitions, 486 flow. Second operand 3 states and 757 transitions. [2021-12-14 16:51:20,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 247 transitions, 550 flow [2021-12-14 16:51:20,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 247 transitions, 550 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-14 16:51:20,407 INFO L242 Difference]: Finished difference. Result has 240 places, 241 transitions, 498 flow [2021-12-14 16:51:20,407 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=240, PETRI_TRANSITIONS=241} [2021-12-14 16:51:20,408 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, -10 predicate places. [2021-12-14 16:51:20,408 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 241 transitions, 498 flow [2021-12-14 16:51:20,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:20,409 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:51:20,409 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:51:20,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 16:51:20,410 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:51:20,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:51:20,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1054232969, now seen corresponding path program 2 times [2021-12-14 16:51:20,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:51:20,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36527403] [2021-12-14 16:51:20,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:51:20,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:51:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:51:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:51:20,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:51:20,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36527403] [2021-12-14 16:51:20,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36527403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:51:20,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:51:20,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:51:20,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909744647] [2021-12-14 16:51:20,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:51:20,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:51:20,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:51:20,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:51:20,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:51:20,674 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 279 [2021-12-14 16:51:20,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 241 transitions, 498 flow. Second operand has 6 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:20,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:51:20,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 279 [2021-12-14 16:51:20,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:51:20,926 INFO L129 PetriNetUnfolder]: 150/749 cut-off events. [2021-12-14 16:51:20,927 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-12-14 16:51:20,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1118 conditions, 749 events. 150/749 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2781 event pairs, 69 based on Foata normal form. 11/716 useless extension candidates. Maximal degree in co-relation 1113. Up to 220 conditions per place. [2021-12-14 16:51:20,932 INFO L132 encePairwiseOnDemand]: 268/279 looper letters, 49 selfloop transitions, 8 changer transitions 31/276 dead transitions. [2021-12-14 16:51:20,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 276 transitions, 747 flow [2021-12-14 16:51:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 16:51:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-14 16:51:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1970 transitions. [2021-12-14 16:51:20,937 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7845479888490641 [2021-12-14 16:51:20,937 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1970 transitions. [2021-12-14 16:51:20,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1970 transitions. [2021-12-14 16:51:20,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:51:20,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1970 transitions. [2021-12-14 16:51:20,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 218.88888888888889) internal successors, (1970), 9 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:20,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:20,948 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:20,949 INFO L186 Difference]: Start difference. First operand has 240 places, 241 transitions, 498 flow. Second operand 9 states and 1970 transitions. [2021-12-14 16:51:20,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 276 transitions, 747 flow [2021-12-14 16:51:20,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 276 transitions, 745 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-14 16:51:20,954 INFO L242 Difference]: Finished difference. Result has 249 places, 242 transitions, 526 flow [2021-12-14 16:51:20,955 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=526, PETRI_PLACES=249, PETRI_TRANSITIONS=242} [2021-12-14 16:51:20,956 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, -1 predicate places. [2021-12-14 16:51:20,956 INFO L470 AbstractCegarLoop]: Abstraction has has 249 places, 242 transitions, 526 flow [2021-12-14 16:51:20,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:20,957 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:51:20,957 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:51:20,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 16:51:20,958 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:51:20,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:51:20,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1329457814, now seen corresponding path program 1 times [2021-12-14 16:51:20,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:51:20,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135371380] [2021-12-14 16:51:20,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:51:20,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:51:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:51:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 16:51:21,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:51:21,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135371380] [2021-12-14 16:51:21,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135371380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:51:21,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:51:21,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:51:21,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600245286] [2021-12-14 16:51:21,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:51:21,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:51:21,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:51:21,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:51:21,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:51:21,077 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 279 [2021-12-14 16:51:21,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 242 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 216.83333333333334) internal successors, (1301), 6 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:21,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:51:21,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 279 [2021-12-14 16:51:21,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:51:21,320 INFO L129 PetriNetUnfolder]: 160/719 cut-off events. [2021-12-14 16:51:21,320 INFO L130 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2021-12-14 16:51:21,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1140 conditions, 719 events. 160/719 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2585 event pairs, 60 based on Foata normal form. 7/653 useless extension candidates. Maximal degree in co-relation 1133. Up to 200 conditions per place. [2021-12-14 16:51:21,326 INFO L132 encePairwiseOnDemand]: 269/279 looper letters, 49 selfloop transitions, 8 changer transitions 21/267 dead transitions. [2021-12-14 16:51:21,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 267 transitions, 740 flow [2021-12-14 16:51:21,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 16:51:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-14 16:51:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1967 transitions. [2021-12-14 16:51:21,331 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7833532457188371 [2021-12-14 16:51:21,332 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1967 transitions. [2021-12-14 16:51:21,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1967 transitions. [2021-12-14 16:51:21,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:51:21,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1967 transitions. [2021-12-14 16:51:21,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 218.55555555555554) internal successors, (1967), 9 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:21,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:21,344 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 279.0) internal successors, (2790), 10 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:21,344 INFO L186 Difference]: Start difference. First operand has 249 places, 242 transitions, 526 flow. Second operand 9 states and 1967 transitions. [2021-12-14 16:51:21,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 267 transitions, 740 flow [2021-12-14 16:51:21,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 267 transitions, 726 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-12-14 16:51:21,350 INFO L242 Difference]: Finished difference. Result has 252 places, 243 transitions, 540 flow [2021-12-14 16:51:21,350 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=540, PETRI_PLACES=252, PETRI_TRANSITIONS=243} [2021-12-14 16:51:21,352 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 2 predicate places. [2021-12-14 16:51:21,352 INFO L470 AbstractCegarLoop]: Abstraction has has 252 places, 243 transitions, 540 flow [2021-12-14 16:51:21,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 216.83333333333334) internal successors, (1301), 6 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:21,353 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:51:21,353 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:51:21,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 16:51:21,353 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:51:21,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:51:21,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2126435691, now seen corresponding path program 1 times [2021-12-14 16:51:21,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:51:21,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330734606] [2021-12-14 16:51:21,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:51:21,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:51:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:51:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:51:21,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:51:21,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330734606] [2021-12-14 16:51:21,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330734606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:51:21,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:51:21,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:51:21,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846038714] [2021-12-14 16:51:21,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:51:21,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:51:21,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:51:21,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:51:21,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:51:21,500 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 279 [2021-12-14 16:51:21,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 243 transitions, 540 flow. Second operand has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:21,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:51:21,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 279 [2021-12-14 16:51:21,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:51:21,721 INFO L129 PetriNetUnfolder]: 200/806 cut-off events. [2021-12-14 16:51:21,721 INFO L130 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2021-12-14 16:51:21,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1361 conditions, 806 events. 200/806 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3397 event pairs, 87 based on Foata normal form. 20/753 useless extension candidates. Maximal degree in co-relation 1352. Up to 181 conditions per place. [2021-12-14 16:51:21,727 INFO L132 encePairwiseOnDemand]: 270/279 looper letters, 52 selfloop transitions, 6 changer transitions 12/259 dead transitions. [2021-12-14 16:51:21,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 259 transitions, 729 flow [2021-12-14 16:51:21,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:51:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-14 16:51:21,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1538 transitions. [2021-12-14 16:51:21,731 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7875064004096262 [2021-12-14 16:51:21,731 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1538 transitions. [2021-12-14 16:51:21,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1538 transitions. [2021-12-14 16:51:21,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:51:21,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1538 transitions. [2021-12-14 16:51:21,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 219.71428571428572) internal successors, (1538), 7 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:21,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:21,739 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:21,739 INFO L186 Difference]: Start difference. First operand has 252 places, 243 transitions, 540 flow. Second operand 7 states and 1538 transitions. [2021-12-14 16:51:21,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 259 transitions, 729 flow [2021-12-14 16:51:21,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 259 transitions, 709 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-12-14 16:51:21,745 INFO L242 Difference]: Finished difference. Result has 252 places, 244 transitions, 546 flow [2021-12-14 16:51:21,746 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=252, PETRI_TRANSITIONS=244} [2021-12-14 16:51:21,747 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 2 predicate places. [2021-12-14 16:51:21,747 INFO L470 AbstractCegarLoop]: Abstraction has has 252 places, 244 transitions, 546 flow [2021-12-14 16:51:21,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:21,747 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:51:21,748 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:51:21,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 16:51:21,748 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:51:21,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:51:21,749 INFO L85 PathProgramCache]: Analyzing trace with hash -942846099, now seen corresponding path program 1 times [2021-12-14 16:51:21,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:51:21,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835614231] [2021-12-14 16:51:21,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:51:21,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:51:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:51:21,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 16:51:21,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:51:21,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835614231] [2021-12-14 16:51:21,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835614231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:51:21,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:51:21,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 16:51:21,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163254801] [2021-12-14 16:51:21,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:51:21,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 16:51:21,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:51:21,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 16:51:21,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 16:51:21,879 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 279 [2021-12-14 16:51:21,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 244 transitions, 546 flow. Second operand has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:21,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:51:21,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 279 [2021-12-14 16:51:21,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:51:22,110 INFO L129 PetriNetUnfolder]: 233/1025 cut-off events. [2021-12-14 16:51:22,110 INFO L130 PetriNetUnfolder]: For 183/203 co-relation queries the response was YES. [2021-12-14 16:51:22,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1636 conditions, 1025 events. 233/1025 cut-off events. For 183/203 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5178 event pairs, 61 based on Foata normal form. 1/896 useless extension candidates. Maximal degree in co-relation 1626. Up to 202 conditions per place. [2021-12-14 16:51:22,120 INFO L132 encePairwiseOnDemand]: 274/279 looper letters, 55 selfloop transitions, 2 changer transitions 7/260 dead transitions. [2021-12-14 16:51:22,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 260 transitions, 725 flow [2021-12-14 16:51:22,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 16:51:22,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-14 16:51:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1093 transitions. [2021-12-14 16:51:22,124 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7835125448028674 [2021-12-14 16:51:22,124 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1093 transitions. [2021-12-14 16:51:22,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1093 transitions. [2021-12-14 16:51:22,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:51:22,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1093 transitions. [2021-12-14 16:51:22,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.6) internal successors, (1093), 5 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:22,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:22,130 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:22,130 INFO L186 Difference]: Start difference. First operand has 252 places, 244 transitions, 546 flow. Second operand 5 states and 1093 transitions. [2021-12-14 16:51:22,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 260 transitions, 725 flow [2021-12-14 16:51:22,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 260 transitions, 715 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-14 16:51:22,137 INFO L242 Difference]: Finished difference. Result has 254 places, 245 transitions, 554 flow [2021-12-14 16:51:22,138 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=554, PETRI_PLACES=254, PETRI_TRANSITIONS=245} [2021-12-14 16:51:22,140 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 4 predicate places. [2021-12-14 16:51:22,140 INFO L470 AbstractCegarLoop]: Abstraction has has 254 places, 245 transitions, 554 flow [2021-12-14 16:51:22,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:22,141 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:51:22,141 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:51:22,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 16:51:22,141 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:51:22,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:51:22,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1092989946, now seen corresponding path program 1 times [2021-12-14 16:51:22,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:51:22,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66677391] [2021-12-14 16:51:22,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:51:22,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:51:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:51:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 16:51:22,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:51:22,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66677391] [2021-12-14 16:51:22,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66677391] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:51:22,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:51:22,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 16:51:22,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830177992] [2021-12-14 16:51:22,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:51:22,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 16:51:22,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:51:22,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 16:51:22,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:51:22,224 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 279 [2021-12-14 16:51:22,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 245 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:22,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:51:22,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 279 [2021-12-14 16:51:22,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:51:22,419 INFO L129 PetriNetUnfolder]: 346/1360 cut-off events. [2021-12-14 16:51:22,420 INFO L130 PetriNetUnfolder]: For 269/269 co-relation queries the response was YES. [2021-12-14 16:51:22,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2260 conditions, 1360 events. 346/1360 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 7507 event pairs, 140 based on Foata normal form. 0/1198 useless extension candidates. Maximal degree in co-relation 2247. Up to 341 conditions per place. [2021-12-14 16:51:22,431 INFO L132 encePairwiseOnDemand]: 276/279 looper letters, 27 selfloop transitions, 2 changer transitions 0/253 dead transitions. [2021-12-14 16:51:22,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 253 transitions, 640 flow [2021-12-14 16:51:22,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 16:51:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-14 16:51:22,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 753 transitions. [2021-12-14 16:51:22,434 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.899641577060932 [2021-12-14 16:51:22,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 753 transitions. [2021-12-14 16:51:22,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 753 transitions. [2021-12-14 16:51:22,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:51:22,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 753 transitions. [2021-12-14 16:51:22,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:22,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:22,438 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:22,438 INFO L186 Difference]: Start difference. First operand has 254 places, 245 transitions, 554 flow. Second operand 3 states and 753 transitions. [2021-12-14 16:51:22,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 253 transitions, 640 flow [2021-12-14 16:51:22,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 253 transitions, 634 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-12-14 16:51:22,446 INFO L242 Difference]: Finished difference. Result has 253 places, 246 transitions, 562 flow [2021-12-14 16:51:22,446 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=562, PETRI_PLACES=253, PETRI_TRANSITIONS=246} [2021-12-14 16:51:22,447 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 3 predicate places. [2021-12-14 16:51:22,447 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 246 transitions, 562 flow [2021-12-14 16:51:22,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:22,448 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:51:22,448 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:51:22,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 16:51:22,448 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:51:22,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:51:22,449 INFO L85 PathProgramCache]: Analyzing trace with hash 294778968, now seen corresponding path program 1 times [2021-12-14 16:51:22,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:51:22,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652638842] [2021-12-14 16:51:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:51:22,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:51:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:51:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 16:51:22,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:51:22,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652638842] [2021-12-14 16:51:22,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652638842] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:51:22,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906663650] [2021-12-14 16:51:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:51:22,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:51:22,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:51:22,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:51:22,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 16:51:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:51:22,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 16:51:22,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:51:23,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2021-12-14 16:51:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 16:51:23,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:51:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 16:51:23,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906663650] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 16:51:23,458 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 16:51:23,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-12-14 16:51:23,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129892315] [2021-12-14 16:51:23,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 16:51:23,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:51:23,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:51:23,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:51:23,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:51:23,462 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 279 [2021-12-14 16:51:23,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 246 transitions, 562 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:23,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:51:23,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 279 [2021-12-14 16:51:23,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:51:24,292 INFO L129 PetriNetUnfolder]: 2082/4853 cut-off events. [2021-12-14 16:51:24,292 INFO L130 PetriNetUnfolder]: For 1669/1669 co-relation queries the response was YES. [2021-12-14 16:51:24,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9811 conditions, 4853 events. 2082/4853 cut-off events. For 1669/1669 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 36348 event pairs, 515 based on Foata normal form. 0/4463 useless extension candidates. Maximal degree in co-relation 9799. Up to 1468 conditions per place. [2021-12-14 16:51:24,331 INFO L132 encePairwiseOnDemand]: 272/279 looper letters, 79 selfloop transitions, 16 changer transitions 0/305 dead transitions. [2021-12-14 16:51:24,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 305 transitions, 938 flow [2021-12-14 16:51:24,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:51:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-14 16:51:24,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1678 transitions. [2021-12-14 16:51:24,339 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8591909882232462 [2021-12-14 16:51:24,339 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1678 transitions. [2021-12-14 16:51:24,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1678 transitions. [2021-12-14 16:51:24,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:51:24,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1678 transitions. [2021-12-14 16:51:24,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 239.71428571428572) internal successors, (1678), 7 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:24,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:24,347 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 279.0) internal successors, (2232), 8 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:24,347 INFO L186 Difference]: Start difference. First operand has 253 places, 246 transitions, 562 flow. Second operand 7 states and 1678 transitions. [2021-12-14 16:51:24,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 305 transitions, 938 flow [2021-12-14 16:51:24,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 305 transitions, 934 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-14 16:51:24,354 INFO L242 Difference]: Finished difference. Result has 261 places, 261 transitions, 663 flow [2021-12-14 16:51:24,354 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=663, PETRI_PLACES=261, PETRI_TRANSITIONS=261} [2021-12-14 16:51:24,355 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 11 predicate places. [2021-12-14 16:51:24,355 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 261 transitions, 663 flow [2021-12-14 16:51:24,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:24,356 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:51:24,356 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:51:24,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 16:51:24,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:51:24,581 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:51:24,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:51:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash -454266074, now seen corresponding path program 2 times [2021-12-14 16:51:24,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:51:24,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523303141] [2021-12-14 16:51:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:51:24,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:51:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:51:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 16:51:24,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:51:24,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523303141] [2021-12-14 16:51:24,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523303141] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:51:24,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135302677] [2021-12-14 16:51:24,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 16:51:24,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:51:24,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:51:24,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:51:24,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 16:51:24,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 16:51:24,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 16:51:24,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 16:51:24,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:51:25,309 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-14 16:51:25,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 16:51:25,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135302677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:51:25,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 16:51:25,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-14 16:51:25,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419716137] [2021-12-14 16:51:25,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:51:25,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 16:51:25,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:51:25,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 16:51:25,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-14 16:51:25,312 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 279 [2021-12-14 16:51:25,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 261 transitions, 663 flow. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:25,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:51:25,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 279 [2021-12-14 16:51:25,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:51:25,733 INFO L129 PetriNetUnfolder]: 698/2849 cut-off events. [2021-12-14 16:51:25,733 INFO L130 PetriNetUnfolder]: For 1037/1057 co-relation queries the response was YES. [2021-12-14 16:51:25,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5332 conditions, 2849 events. 698/2849 cut-off events. For 1037/1057 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 22581 event pairs, 316 based on Foata normal form. 45/2640 useless extension candidates. Maximal degree in co-relation 5317. Up to 932 conditions per place. [2021-12-14 16:51:25,760 INFO L132 encePairwiseOnDemand]: 275/279 looper letters, 28 selfloop transitions, 2 changer transitions 1/270 dead transitions. [2021-12-14 16:51:25,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 270 transitions, 764 flow [2021-12-14 16:51:25,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 16:51:25,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-14 16:51:25,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 753 transitions. [2021-12-14 16:51:25,763 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.899641577060932 [2021-12-14 16:51:25,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 753 transitions. [2021-12-14 16:51:25,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 753 transitions. [2021-12-14 16:51:25,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:51:25,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 753 transitions. [2021-12-14 16:51:25,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:25,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:25,768 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:25,769 INFO L186 Difference]: Start difference. First operand has 261 places, 261 transitions, 663 flow. Second operand 3 states and 753 transitions. [2021-12-14 16:51:25,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 270 transitions, 764 flow [2021-12-14 16:51:25,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 270 transitions, 764 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-14 16:51:25,776 INFO L242 Difference]: Finished difference. Result has 264 places, 262 transitions, 679 flow [2021-12-14 16:51:25,777 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=679, PETRI_PLACES=264, PETRI_TRANSITIONS=262} [2021-12-14 16:51:25,777 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 14 predicate places. [2021-12-14 16:51:25,778 INFO L470 AbstractCegarLoop]: Abstraction has has 264 places, 262 transitions, 679 flow [2021-12-14 16:51:25,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:25,778 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:51:25,779 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:51:25,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 16:51:25,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-14 16:51:25,995 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:51:25,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:51:25,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1472672790, now seen corresponding path program 3 times [2021-12-14 16:51:25,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:51:25,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147833404] [2021-12-14 16:51:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:51:25,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:51:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:51:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 16:51:26,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:51:26,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147833404] [2021-12-14 16:51:26,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147833404] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:51:26,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112013135] [2021-12-14 16:51:26,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 16:51:26,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:51:26,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:51:26,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:51:26,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 16:51:26,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-14 16:51:26,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 16:51:26,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-14 16:51:26,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:51:27,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-12-14 16:51:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-14 16:51:27,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:51:27,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2021-12-14 16:51:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-14 16:51:28,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112013135] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 16:51:28,126 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 16:51:28,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2021-12-14 16:51:28,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636253472] [2021-12-14 16:51:28,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 16:51:28,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-14 16:51:28,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:51:28,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-14 16:51:28,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2021-12-14 16:51:28,132 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 279 [2021-12-14 16:51:28,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 262 transitions, 679 flow. Second operand has 29 states, 29 states have (on average 167.3793103448276) internal successors, (4854), 29 states have internal predecessors, (4854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:28,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:51:28,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 279 [2021-12-14 16:51:28,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:51:32,130 INFO L129 PetriNetUnfolder]: 5064/13440 cut-off events. [2021-12-14 16:51:32,131 INFO L130 PetriNetUnfolder]: For 11176/11304 co-relation queries the response was YES. [2021-12-14 16:51:32,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31246 conditions, 13440 events. 5064/13440 cut-off events. For 11176/11304 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 130757 event pairs, 1042 based on Foata normal form. 773/13303 useless extension candidates. Maximal degree in co-relation 31229. Up to 1569 conditions per place. [2021-12-14 16:51:32,210 INFO L132 encePairwiseOnDemand]: 234/279 looper letters, 216 selfloop transitions, 113 changer transitions 113/586 dead transitions. [2021-12-14 16:51:32,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 586 transitions, 2891 flow [2021-12-14 16:51:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-14 16:51:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-12-14 16:51:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 10475 transitions. [2021-12-14 16:51:32,235 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5959492518632303 [2021-12-14 16:51:32,236 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 10475 transitions. [2021-12-14 16:51:32,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 10475 transitions. [2021-12-14 16:51:32,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:51:32,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 10475 transitions. [2021-12-14 16:51:32,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 166.26984126984127) internal successors, (10475), 63 states have internal predecessors, (10475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:32,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 279.0) internal successors, (17856), 64 states have internal predecessors, (17856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:32,303 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 279.0) internal successors, (17856), 64 states have internal predecessors, (17856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:32,304 INFO L186 Difference]: Start difference. First operand has 264 places, 262 transitions, 679 flow. Second operand 63 states and 10475 transitions. [2021-12-14 16:51:32,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 586 transitions, 2891 flow [2021-12-14 16:51:32,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 586 transitions, 2887 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-14 16:51:32,332 INFO L242 Difference]: Finished difference. Result has 350 places, 331 transitions, 1384 flow [2021-12-14 16:51:32,333 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=1384, PETRI_PLACES=350, PETRI_TRANSITIONS=331} [2021-12-14 16:51:32,334 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 100 predicate places. [2021-12-14 16:51:32,334 INFO L470 AbstractCegarLoop]: Abstraction has has 350 places, 331 transitions, 1384 flow [2021-12-14 16:51:32,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 167.3793103448276) internal successors, (4854), 29 states have internal predecessors, (4854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:32,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-14 16:51:32,336 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:51:32,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 16:51:32,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:51:32,548 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-14 16:51:32,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:51:32,548 INFO L85 PathProgramCache]: Analyzing trace with hash 606496152, now seen corresponding path program 4 times [2021-12-14 16:51:32,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:51:32,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634981234] [2021-12-14 16:51:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:51:32,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:51:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:51:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 16:51:32,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:51:32,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634981234] [2021-12-14 16:51:32,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634981234] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:51:32,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214594668] [2021-12-14 16:51:32,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-14 16:51:32,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:51:32,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:51:32,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:51:32,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 16:51:32,928 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-14 16:51:32,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 16:51:32,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-14 16:51:33,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:51:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-14 16:51:33,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:51:33,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2021-12-14 16:51:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-14 16:51:34,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214594668] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 16:51:34,666 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 16:51:34,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 30 [2021-12-14 16:51:34,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528697038] [2021-12-14 16:51:34,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 16:51:34,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-14 16:51:34,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:51:34,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-14 16:51:34,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2021-12-14 16:51:34,671 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 279 [2021-12-14 16:51:34,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 331 transitions, 1384 flow. Second operand has 30 states, 30 states have (on average 165.26666666666668) internal successors, (4958), 30 states have internal predecessors, (4958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:34,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-14 16:51:34,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 279 [2021-12-14 16:51:34,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-14 16:51:37,611 INFO L129 PetriNetUnfolder]: 2026/6667 cut-off events. [2021-12-14 16:51:37,611 INFO L130 PetriNetUnfolder]: For 57489/57559 co-relation queries the response was YES. [2021-12-14 16:51:37,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20236 conditions, 6667 events. 2026/6667 cut-off events. For 57489/57559 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 59489 event pairs, 588 based on Foata normal form. 218/6313 useless extension candidates. Maximal degree in co-relation 20194. Up to 1002 conditions per place. [2021-12-14 16:51:37,658 INFO L132 encePairwiseOnDemand]: 234/279 looper letters, 0 selfloop transitions, 0 changer transitions 448/448 dead transitions. [2021-12-14 16:51:37,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 448 transitions, 2556 flow [2021-12-14 16:51:37,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-12-14 16:51:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-12-14 16:51:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 9601 transitions. [2021-12-14 16:51:37,670 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5832573962699714 [2021-12-14 16:51:37,670 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 9601 transitions. [2021-12-14 16:51:37,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 9601 transitions. [2021-12-14 16:51:37,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 16:51:37,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 9601 transitions. [2021-12-14 16:51:37,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 162.72881355932202) internal successors, (9601), 59 states have internal predecessors, (9601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:37,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 279.0) internal successors, (16740), 60 states have internal predecessors, (16740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:37,711 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 279.0) internal successors, (16740), 60 states have internal predecessors, (16740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:37,712 INFO L186 Difference]: Start difference. First operand has 350 places, 331 transitions, 1384 flow. Second operand 59 states and 9601 transitions. [2021-12-14 16:51:37,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 448 transitions, 2556 flow [2021-12-14 16:51:37,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 448 transitions, 2422 flow, removed 41 selfloop flow, removed 22 redundant places. [2021-12-14 16:51:37,750 INFO L242 Difference]: Finished difference. Result has 365 places, 0 transitions, 0 flow [2021-12-14 16:51:37,750 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=0, PETRI_PLACES=365, PETRI_TRANSITIONS=0} [2021-12-14 16:51:37,751 INFO L334 CegarLoopForPetriNet]: 250 programPoint places, 115 predicate places. [2021-12-14 16:51:37,751 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 0 transitions, 0 flow [2021-12-14 16:51:37,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 165.26666666666668) internal successors, (4958), 30 states have internal predecessors, (4958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 16:51:37,755 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-14 16:51:37,755 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-14 16:51:37,755 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-14 16:51:37,756 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-14 16:51:37,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 16:51:37,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:51:37,982 INFO L732 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1] [2021-12-14 16:51:37,984 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-14 16:51:37,984 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 16:51:37,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:51:37 BasicIcfg [2021-12-14 16:51:37,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 16:51:37,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 16:51:37,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 16:51:37,987 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 16:51:37,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:51:19" (3/4) ... [2021-12-14 16:51:37,990 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-14 16:51:37,994 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-14 16:51:37,994 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-14 16:51:37,994 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-12-14 16:51:37,999 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2021-12-14 16:51:37,999 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-14 16:51:37,999 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-14 16:51:38,000 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-14 16:51:38,039 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 16:51:38,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 16:51:38,040 INFO L158 Benchmark]: Toolchain (without parser) took 19977.89ms. Allocated memory was 86.0MB in the beginning and 926.9MB in the end (delta: 841.0MB). Free memory was 50.5MB in the beginning and 707.8MB in the end (delta: -657.2MB). Peak memory consumption was 595.2MB. Max. memory is 16.1GB. [2021-12-14 16:51:38,040 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 86.0MB. Free memory is still 67.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:51:38,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.86ms. Allocated memory is still 86.0MB. Free memory was 50.3MB in the beginning and 61.1MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 16:51:38,040 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.43ms. Allocated memory is still 86.0MB. Free memory was 61.1MB in the beginning and 58.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 16:51:38,041 INFO L158 Benchmark]: Boogie Preprocessor took 28.07ms. Allocated memory is still 86.0MB. Free memory was 58.4MB in the beginning and 56.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:51:38,041 INFO L158 Benchmark]: RCFGBuilder took 611.64ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 56.3MB in the beginning and 71.6MB in the end (delta: -15.3MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2021-12-14 16:51:38,041 INFO L158 Benchmark]: TraceAbstraction took 18944.15ms. Allocated memory was 104.9MB in the beginning and 926.9MB in the end (delta: 822.1MB). Free memory was 71.1MB in the beginning and 304.7MB in the end (delta: -233.6MB). Peak memory consumption was 588.8MB. Max. memory is 16.1GB. [2021-12-14 16:51:38,042 INFO L158 Benchmark]: Witness Printer took 52.18ms. Allocated memory is still 926.9MB. Free memory was 304.7MB in the beginning and 707.8MB in the end (delta: -403.1MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-12-14 16:51:38,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 86.0MB. Free memory is still 67.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.86ms. Allocated memory is still 86.0MB. Free memory was 50.3MB in the beginning and 61.1MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.43ms. Allocated memory is still 86.0MB. Free memory was 61.1MB in the beginning and 58.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.07ms. Allocated memory is still 86.0MB. Free memory was 58.4MB in the beginning and 56.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 611.64ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 56.3MB in the beginning and 71.6MB in the end (delta: -15.3MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. * TraceAbstraction took 18944.15ms. Allocated memory was 104.9MB in the beginning and 926.9MB in the end (delta: 822.1MB). Free memory was 71.1MB in the beginning and 304.7MB in the end (delta: -233.6MB). Peak memory consumption was 588.8MB. Max. memory is 16.1GB. * Witness Printer took 52.18ms. Allocated memory is still 926.9MB. Free memory was 304.7MB in the beginning and 707.8MB in the end (delta: -403.1MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 156]: 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 7 procedures, 301 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.8s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2366 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2366 mSDsluCounter, 2050 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2502 mSDsCounter, 339 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4216 IncrementalHoareTripleChecker+Invalid, 4555 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 339 mSolverCounterUnsat, 275 mSDtfsCounter, 4216 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1912 GetRequests, 1696 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3730 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1384occurred in iteration=10, InterpolantAutomatonStates: 170, 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: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 3421 NumberOfCodeBlocks, 3384 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 4138 ConstructedInterpolants, 0 QuantifiedInterpolants, 12399 SizeOfPredicates, 44 NumberOfNonLiveVariables, 2176 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 140/175 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-14 16:51:38,077 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