./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.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 5e99154d55f7fd098c0e840b496605adea5c7214bf70234e7c54dceeadfa306b --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:43:49,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:43:49,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:43:49,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:43:49,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:43:49,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:43:49,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:43:49,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:43:49,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:43:49,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:43:49,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:43:49,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:43:49,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:43:49,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:43:49,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:43:49,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:43:49,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:43:49,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:43:49,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:43:49,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:43:49,356 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:43:49,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:43:49,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:43:49,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:43:49,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:43:49,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:43:49,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:43:49,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:43:49,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:43:49,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:43:49,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:43:49,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:43:49,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:43:49,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:43:49,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:43:49,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:43:49,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:43:49,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:43:49,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:43:49,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:43:49,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:43:49,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:43:49,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:43:49,393 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:43:49,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:43:49,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:43:49,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:43:49,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:43:49,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:43:49,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:43:49,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:43:49,395 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:43:49,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:43:49,396 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:43:49,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:43:49,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:43:49,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:43:49,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:43:49,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:43:49,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:43:49,397 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:43:49,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:43:49,397 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:43:49,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:43:49,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:43:49,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:43:49,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:43:49,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:43:49,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:43:49,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:43:49,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:43:49,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:43:49,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:43:49,399 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:43:49,399 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:43:49,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:43:49,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e99154d55f7fd098c0e840b496605adea5c7214bf70234e7c54dceeadfa306b [2022-07-12 06:43:49,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:43:49,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:43:49,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:43:49,634 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:43:49,634 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:43:49,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2022-07-12 06:43:49,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee3655c78/54e6957c195649fcb831bea3f57dd7b9/FLAGcc0976571 [2022-07-12 06:43:50,071 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:43:50,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2022-07-12 06:43:50,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee3655c78/54e6957c195649fcb831bea3f57dd7b9/FLAGcc0976571 [2022-07-12 06:43:50,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee3655c78/54e6957c195649fcb831bea3f57dd7b9 [2022-07-12 06:43:50,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:43:50,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:43:50,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:43:50,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:43:50,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:43:50,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:43:50" (1/1) ... [2022-07-12 06:43:50,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ace1a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:43:50, skipping insertion in model container [2022-07-12 06:43:50,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:43:50" (1/1) ... [2022-07-12 06:43:50,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:43:50,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:43:50,348 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/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c[12751,12764] [2022-07-12 06:43:50,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:43:50,362 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:43:50,398 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/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c[12751,12764] [2022-07-12 06:43:50,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:43:50,415 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:43:50,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:43:50 WrapperNode [2022-07-12 06:43:50,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:43:50,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:43:50,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:43:50,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:43:50,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:43:50" (1/1) ... [2022-07-12 06:43:50,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:43:50" (1/1) ... [2022-07-12 06:43:50,452 INFO L137 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 390 [2022-07-12 06:43:50,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:43:50,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:43:50,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:43:50,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:43:50,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:43:50" (1/1) ... [2022-07-12 06:43:50,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:43:50" (1/1) ... [2022-07-12 06:43:50,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:43:50" (1/1) ... [2022-07-12 06:43:50,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:43:50" (1/1) ... [2022-07-12 06:43:50,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:43:50" (1/1) ... [2022-07-12 06:43:50,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:43:50" (1/1) ... [2022-07-12 06:43:50,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:43:50" (1/1) ... [2022-07-12 06:43:50,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:43:50,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:43:50,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:43:50,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:43:50,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:43:50" (1/1) ... [2022-07-12 06:43:50,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:43:50,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:43:50,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 06:43:50,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 06:43:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:43:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:43:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:43:50,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:43:50,613 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:43:50,614 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:43:50,997 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:43:51,003 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:43:51,004 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 06:43:51,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:43:51 BoogieIcfgContainer [2022-07-12 06:43:51,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:43:51,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:43:51,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:43:51,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:43:51,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:43:50" (1/3) ... [2022-07-12 06:43:51,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233d661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:43:51, skipping insertion in model container [2022-07-12 06:43:51,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:43:50" (2/3) ... [2022-07-12 06:43:51,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233d661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:43:51, skipping insertion in model container [2022-07-12 06:43:51,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:43:51" (3/3) ... [2022-07-12 06:43:51,012 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2022-07-12 06:43:51,022 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:43:51,023 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:43:51,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:43:51,078 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1e06146c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3b357afe [2022-07-12 06:43:51,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:43:51,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 120 states have (on average 1.7083333333333333) internal successors, (205), 121 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 06:43:51,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:43:51,098 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:43:51,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:43:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:43:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash 563549969, now seen corresponding path program 1 times [2022-07-12 06:43:51,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:43:51,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430861] [2022-07-12 06:43:51,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:43:51,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:43:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:43:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:43:51,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:43:51,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430861] [2022-07-12 06:43:51,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:43:51,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:43:51,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 06:43:51,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898502349] [2022-07-12 06:43:51,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:43:51,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 06:43:51,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:43:51,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 06:43:51,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:43:51,271 INFO L87 Difference]: Start difference. First operand has 122 states, 120 states have (on average 1.7083333333333333) internal successors, (205), 121 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:43:51,297 INFO L93 Difference]: Finished difference Result 207 states and 340 transitions. [2022-07-12 06:43:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 06:43:51,299 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-07-12 06:43:51,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:43:51,305 INFO L225 Difference]: With dead ends: 207 [2022-07-12 06:43:51,306 INFO L226 Difference]: Without dead ends: 118 [2022-07-12 06:43:51,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:43:51,310 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:43:51,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:43:51,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-12 06:43:51,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-07-12 06:43:51,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.6923076923076923) internal successors, (198), 117 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 198 transitions. [2022-07-12 06:43:51,339 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 198 transitions. Word has length 33 [2022-07-12 06:43:51,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:43:51,340 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 198 transitions. [2022-07-12 06:43:51,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,340 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 198 transitions. [2022-07-12 06:43:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 06:43:51,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:43:51,341 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:43:51,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:43:51,342 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:43:51,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:43:51,342 INFO L85 PathProgramCache]: Analyzing trace with hash 54076879, now seen corresponding path program 1 times [2022-07-12 06:43:51,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:43:51,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849401525] [2022-07-12 06:43:51,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:43:51,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:43:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:43:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:43:51,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:43:51,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849401525] [2022-07-12 06:43:51,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849401525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:43:51,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:43:51,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:43:51,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257963714] [2022-07-12 06:43:51,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:43:51,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:43:51,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:43:51,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:43:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:43:51,456 INFO L87 Difference]: Start difference. First operand 118 states and 198 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:43:51,550 INFO L93 Difference]: Finished difference Result 202 states and 330 transitions. [2022-07-12 06:43:51,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:43:51,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-07-12 06:43:51,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:43:51,551 INFO L225 Difference]: With dead ends: 202 [2022-07-12 06:43:51,551 INFO L226 Difference]: Without dead ends: 118 [2022-07-12 06:43:51,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:43:51,552 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 3 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:43:51,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 749 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:43:51,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-12 06:43:51,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-07-12 06:43:51,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.4188034188034189) internal successors, (166), 117 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 166 transitions. [2022-07-12 06:43:51,560 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 166 transitions. Word has length 33 [2022-07-12 06:43:51,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:43:51,560 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 166 transitions. [2022-07-12 06:43:51,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,560 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 166 transitions. [2022-07-12 06:43:51,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 06:43:51,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:43:51,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:43:51,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:43:51,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:43:51,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:43:51,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1850253404, now seen corresponding path program 1 times [2022-07-12 06:43:51,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:43:51,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589866620] [2022-07-12 06:43:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:43:51,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:43:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:43:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:43:51,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:43:51,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589866620] [2022-07-12 06:43:51,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589866620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:43:51,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:43:51,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:43:51,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068261563] [2022-07-12 06:43:51,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:43:51,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:43:51,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:43:51,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:43:51,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:43:51,650 INFO L87 Difference]: Start difference. First operand 118 states and 166 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:43:51,667 INFO L93 Difference]: Finished difference Result 266 states and 402 transitions. [2022-07-12 06:43:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:43:51,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-12 06:43:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:43:51,669 INFO L225 Difference]: With dead ends: 266 [2022-07-12 06:43:51,669 INFO L226 Difference]: Without dead ends: 186 [2022-07-12 06:43:51,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:43:51,670 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 116 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:43:51,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 389 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:43:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-07-12 06:43:51,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2022-07-12 06:43:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.4863387978142077) internal successors, (272), 183 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 272 transitions. [2022-07-12 06:43:51,679 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 272 transitions. Word has length 64 [2022-07-12 06:43:51,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:43:51,680 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 272 transitions. [2022-07-12 06:43:51,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,680 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 272 transitions. [2022-07-12 06:43:51,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 06:43:51,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:43:51,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:43:51,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:43:51,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:43:51,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:43:51,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1736606100, now seen corresponding path program 1 times [2022-07-12 06:43:51,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:43:51,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536485105] [2022-07-12 06:43:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:43:51,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:43:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:43:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:43:51,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:43:51,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536485105] [2022-07-12 06:43:51,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536485105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:43:51,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:43:51,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:43:51,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945402461] [2022-07-12 06:43:51,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:43:51,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:43:51,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:43:51,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:43:51,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:43:51,735 INFO L87 Difference]: Start difference. First operand 184 states and 272 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:43:51,750 INFO L93 Difference]: Finished difference Result 452 states and 700 transitions. [2022-07-12 06:43:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:43:51,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-12 06:43:51,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:43:51,752 INFO L225 Difference]: With dead ends: 452 [2022-07-12 06:43:51,752 INFO L226 Difference]: Without dead ends: 306 [2022-07-12 06:43:51,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:43:51,754 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 111 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:43:51,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 380 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:43:51,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-07-12 06:43:51,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2022-07-12 06:43:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.528052805280528) internal successors, (463), 303 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 463 transitions. [2022-07-12 06:43:51,768 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 463 transitions. Word has length 65 [2022-07-12 06:43:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:43:51,768 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 463 transitions. [2022-07-12 06:43:51,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 463 transitions. [2022-07-12 06:43:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 06:43:51,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:43:51,769 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:43:51,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:43:51,770 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:43:51,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:43:51,770 INFO L85 PathProgramCache]: Analyzing trace with hash 245456436, now seen corresponding path program 1 times [2022-07-12 06:43:51,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:43:51,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880716157] [2022-07-12 06:43:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:43:51,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:43:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:43:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:43:51,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:43:51,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880716157] [2022-07-12 06:43:51,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880716157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:43:51,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:43:51,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:43:51,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432177030] [2022-07-12 06:43:51,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:43:51,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:43:51,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:43:51,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:43:51,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:43:51,815 INFO L87 Difference]: Start difference. First operand 304 states and 463 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:43:51,835 INFO L93 Difference]: Finished difference Result 788 states and 1233 transitions. [2022-07-12 06:43:51,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:43:51,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-12 06:43:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:43:51,837 INFO L225 Difference]: With dead ends: 788 [2022-07-12 06:43:51,837 INFO L226 Difference]: Without dead ends: 522 [2022-07-12 06:43:51,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:43:51,839 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 106 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:43:51,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 371 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:43:51,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-07-12 06:43:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 520. [2022-07-12 06:43:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 1.5472061657032756) internal successors, (803), 519 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 803 transitions. [2022-07-12 06:43:51,886 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 803 transitions. Word has length 66 [2022-07-12 06:43:51,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:43:51,886 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 803 transitions. [2022-07-12 06:43:51,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:51,887 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 803 transitions. [2022-07-12 06:43:51,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 06:43:51,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:43:51,901 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:43:51,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:43:51,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:43:51,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:43:51,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2021301796, now seen corresponding path program 1 times [2022-07-12 06:43:51,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:43:51,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452860634] [2022-07-12 06:43:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:43:51,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:43:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:43:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:43:51,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:43:51,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452860634] [2022-07-12 06:43:51,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452860634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:43:51,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:43:51,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:43:51,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528311391] [2022-07-12 06:43:51,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:43:51,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:43:51,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:43:51,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:43:51,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:43:51,971 INFO L87 Difference]: Start difference. First operand 520 states and 803 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:52,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:43:52,006 INFO L93 Difference]: Finished difference Result 1388 states and 2173 transitions. [2022-07-12 06:43:52,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:43:52,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-12 06:43:52,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:43:52,010 INFO L225 Difference]: With dead ends: 1388 [2022-07-12 06:43:52,010 INFO L226 Difference]: Without dead ends: 906 [2022-07-12 06:43:52,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:43:52,017 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 101 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:43:52,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 362 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:43:52,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-07-12 06:43:52,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2022-07-12 06:43:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 903 states have (on average 1.5492801771871538) internal successors, (1399), 903 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:52,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1399 transitions. [2022-07-12 06:43:52,053 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1399 transitions. Word has length 67 [2022-07-12 06:43:52,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:43:52,055 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1399 transitions. [2022-07-12 06:43:52,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1399 transitions. [2022-07-12 06:43:52,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 06:43:52,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:43:52,064 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:43:52,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:43:52,064 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:43:52,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:43:52,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1960792892, now seen corresponding path program 1 times [2022-07-12 06:43:52,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:43:52,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680436868] [2022-07-12 06:43:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:43:52,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:43:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:43:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:43:52,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:43:52,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680436868] [2022-07-12 06:43:52,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680436868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:43:52,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:43:52,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:43:52,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043942741] [2022-07-12 06:43:52,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:43:52,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:43:52,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:43:52,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:43:52,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:43:52,132 INFO L87 Difference]: Start difference. First operand 904 states and 1399 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:43:52,181 INFO L93 Difference]: Finished difference Result 2444 states and 3801 transitions. [2022-07-12 06:43:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:43:52,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-12 06:43:52,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:43:52,189 INFO L225 Difference]: With dead ends: 2444 [2022-07-12 06:43:52,189 INFO L226 Difference]: Without dead ends: 1578 [2022-07-12 06:43:52,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:43:52,195 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 96 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:43:52,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 353 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:43:52,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2022-07-12 06:43:52,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1576. [2022-07-12 06:43:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 1.5384126984126985) internal successors, (2423), 1575 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2423 transitions. [2022-07-12 06:43:52,250 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2423 transitions. Word has length 68 [2022-07-12 06:43:52,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:43:52,251 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2423 transitions. [2022-07-12 06:43:52,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:52,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2423 transitions. [2022-07-12 06:43:52,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 06:43:52,252 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:43:52,252 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:43:52,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:43:52,253 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:43:52,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:43:52,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1083012428, now seen corresponding path program 1 times [2022-07-12 06:43:52,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:43:52,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975909352] [2022-07-12 06:43:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:43:52,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:43:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:43:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:43:52,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:43:52,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975909352] [2022-07-12 06:43:52,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975909352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:43:52,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:43:52,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:43:52,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894020468] [2022-07-12 06:43:52,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:43:52,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:43:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:43:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:43:52,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:43:52,326 INFO L87 Difference]: Start difference. First operand 1576 states and 2423 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:52,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:43:52,672 INFO L93 Difference]: Finished difference Result 10804 states and 16733 transitions. [2022-07-12 06:43:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:43:52,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-12 06:43:52,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:43:52,701 INFO L225 Difference]: With dead ends: 10804 [2022-07-12 06:43:52,702 INFO L226 Difference]: Without dead ends: 9266 [2022-07-12 06:43:52,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:43:52,707 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1313 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:43:52,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 1755 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:43:52,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9266 states. [2022-07-12 06:43:52,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9266 to 3112. [2022-07-12 06:43:52,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3112 states, 3111 states have (on average 1.5245901639344261) internal successors, (4743), 3111 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:52,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4743 transitions. [2022-07-12 06:43:52,902 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4743 transitions. Word has length 69 [2022-07-12 06:43:52,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:43:52,902 INFO L495 AbstractCegarLoop]: Abstraction has 3112 states and 4743 transitions. [2022-07-12 06:43:52,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:52,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4743 transitions. [2022-07-12 06:43:52,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 06:43:52,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:43:52,903 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:43:52,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:43:52,907 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:43:52,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:43:52,907 INFO L85 PathProgramCache]: Analyzing trace with hash 403029886, now seen corresponding path program 1 times [2022-07-12 06:43:52,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:43:52,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719468790] [2022-07-12 06:43:52,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:43:52,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:43:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:43:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:43:53,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:43:53,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719468790] [2022-07-12 06:43:53,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719468790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:43:53,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:43:53,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:43:53,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465649545] [2022-07-12 06:43:53,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:43:53,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:43:53,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:43:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:43:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:43:53,036 INFO L87 Difference]: Start difference. First operand 3112 states and 4743 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:53,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:43:53,763 INFO L93 Difference]: Finished difference Result 16722 states and 25228 transitions. [2022-07-12 06:43:53,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:43:53,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 06:43:53,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:43:53,827 INFO L225 Difference]: With dead ends: 16722 [2022-07-12 06:43:53,827 INFO L226 Difference]: Without dead ends: 13648 [2022-07-12 06:43:53,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:43:53,835 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 828 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:43:53,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 870 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:43:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13648 states. [2022-07-12 06:43:54,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13648 to 13640. [2022-07-12 06:43:54,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13640 states, 13639 states have (on average 1.4997433829459639) internal successors, (20455), 13639 states have internal predecessors, (20455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:54,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13640 states to 13640 states and 20455 transitions. [2022-07-12 06:43:54,590 INFO L78 Accepts]: Start accepts. Automaton has 13640 states and 20455 transitions. Word has length 70 [2022-07-12 06:43:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:43:54,590 INFO L495 AbstractCegarLoop]: Abstraction has 13640 states and 20455 transitions. [2022-07-12 06:43:54,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:54,591 INFO L276 IsEmpty]: Start isEmpty. Operand 13640 states and 20455 transitions. [2022-07-12 06:43:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 06:43:54,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:43:54,591 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:43:54,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:43:54,592 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:43:54,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:43:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1255275453, now seen corresponding path program 1 times [2022-07-12 06:43:54,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:43:54,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953929977] [2022-07-12 06:43:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:43:54,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:43:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:43:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:43:54,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:43:54,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953929977] [2022-07-12 06:43:54,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953929977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:43:54,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:43:54,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:43:54,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445766167] [2022-07-12 06:43:54,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:43:54,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:43:54,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:43:54,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:43:54,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:43:54,657 INFO L87 Difference]: Start difference. First operand 13640 states and 20455 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:55,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:43:55,924 INFO L93 Difference]: Finished difference Result 28522 states and 42152 transitions. [2022-07-12 06:43:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:43:55,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-12 06:43:55,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:43:55,977 INFO L225 Difference]: With dead ends: 28522 [2022-07-12 06:43:55,977 INFO L226 Difference]: Without dead ends: 28520 [2022-07-12 06:43:55,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:43:55,986 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 363 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:43:55,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 725 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:43:56,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28520 states. [2022-07-12 06:43:57,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28520 to 14600. [2022-07-12 06:43:57,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14600 states, 14599 states have (on average 1.466881293239263) internal successors, (21415), 14599 states have internal predecessors, (21415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:57,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14600 states to 14600 states and 21415 transitions. [2022-07-12 06:43:57,077 INFO L78 Accepts]: Start accepts. Automaton has 14600 states and 21415 transitions. Word has length 71 [2022-07-12 06:43:57,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:43:57,078 INFO L495 AbstractCegarLoop]: Abstraction has 14600 states and 21415 transitions. [2022-07-12 06:43:57,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:57,078 INFO L276 IsEmpty]: Start isEmpty. Operand 14600 states and 21415 transitions. [2022-07-12 06:43:57,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 06:43:57,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:43:57,079 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:43:57,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:43:57,080 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:43:57,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:43:57,080 INFO L85 PathProgramCache]: Analyzing trace with hash -206254681, now seen corresponding path program 1 times [2022-07-12 06:43:57,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:43:57,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430503146] [2022-07-12 06:43:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:43:57,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:43:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:43:57,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:43:57,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:43:57,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430503146] [2022-07-12 06:43:57,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430503146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:43:57,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:43:57,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:43:57,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087195736] [2022-07-12 06:43:57,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:43:57,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:43:57,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:43:57,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:43:57,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:43:57,128 INFO L87 Difference]: Start difference. First operand 14600 states and 21415 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:57,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:43:57,944 INFO L93 Difference]: Finished difference Result 35518 states and 52155 transitions. [2022-07-12 06:43:57,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:43:57,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-07-12 06:43:57,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:43:57,984 INFO L225 Difference]: With dead ends: 35518 [2022-07-12 06:43:57,984 INFO L226 Difference]: Without dead ends: 20956 [2022-07-12 06:43:58,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:43:58,002 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 87 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:43:58,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 332 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:43:58,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20956 states. [2022-07-12 06:43:58,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20956 to 20954. [2022-07-12 06:43:58,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20954 states, 20953 states have (on average 1.4619863504032835) internal successors, (30633), 20953 states have internal predecessors, (30633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20954 states to 20954 states and 30633 transitions. [2022-07-12 06:43:59,024 INFO L78 Accepts]: Start accepts. Automaton has 20954 states and 30633 transitions. Word has length 72 [2022-07-12 06:43:59,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:43:59,024 INFO L495 AbstractCegarLoop]: Abstraction has 20954 states and 30633 transitions. [2022-07-12 06:43:59,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:43:59,025 INFO L276 IsEmpty]: Start isEmpty. Operand 20954 states and 30633 transitions. [2022-07-12 06:43:59,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 06:43:59,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:43:59,033 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:43:59,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:43:59,034 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:43:59,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:43:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1745394696, now seen corresponding path program 1 times [2022-07-12 06:43:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:43:59,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354913507] [2022-07-12 06:43:59,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:43:59,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:43:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:43:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 06:43:59,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:43:59,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354913507] [2022-07-12 06:43:59,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354913507] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:43:59,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994027774] [2022-07-12 06:43:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:43:59,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:43:59,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:43:59,113 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) [2022-07-12 06:43:59,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 06:43:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:43:59,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-12 06:43:59,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:43:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 06:43:59,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:43:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 06:43:59,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994027774] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:43:59,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:43:59,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2022-07-12 06:43:59,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510588113] [2022-07-12 06:43:59,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:43:59,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 06:43:59,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:43:59,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 06:43:59,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:43:59,849 INFO L87 Difference]: Start difference. First operand 20954 states and 30633 transitions. Second operand has 10 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:02,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:44:02,741 INFO L93 Difference]: Finished difference Result 78843 states and 116052 transitions. [2022-07-12 06:44:02,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 06:44:02,741 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-07-12 06:44:02,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:44:02,864 INFO L225 Difference]: With dead ends: 78843 [2022-07-12 06:44:02,865 INFO L226 Difference]: Without dead ends: 64281 [2022-07-12 06:44:02,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 188 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:44:02,890 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 1084 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:44:02,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1347 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:44:02,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64281 states. [2022-07-12 06:44:05,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64281 to 61690. [2022-07-12 06:44:05,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61690 states, 61689 states have (on average 1.456223962132633) internal successors, (89833), 61689 states have internal predecessors, (89833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:05,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61690 states to 61690 states and 89833 transitions. [2022-07-12 06:44:05,980 INFO L78 Accepts]: Start accepts. Automaton has 61690 states and 89833 transitions. Word has length 99 [2022-07-12 06:44:05,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:44:05,980 INFO L495 AbstractCegarLoop]: Abstraction has 61690 states and 89833 transitions. [2022-07-12 06:44:05,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:05,981 INFO L276 IsEmpty]: Start isEmpty. Operand 61690 states and 89833 transitions. [2022-07-12 06:44:05,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:44:05,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:44:05,996 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 06:44:06,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 06:44:06,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 06:44:06,215 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:44:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:44:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash -152615028, now seen corresponding path program 1 times [2022-07-12 06:44:06,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:44:06,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231125605] [2022-07-12 06:44:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:44:06,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:44:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:44:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 06:44:06,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:44:06,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231125605] [2022-07-12 06:44:06,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231125605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:44:06,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:44:06,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:44:06,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586362378] [2022-07-12 06:44:06,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:44:06,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:44:06,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:44:06,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:44:06,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:44:06,280 INFO L87 Difference]: Start difference. First operand 61690 states and 89833 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:11,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:44:11,997 INFO L93 Difference]: Finished difference Result 150086 states and 219727 transitions. [2022-07-12 06:44:11,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:44:11,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-07-12 06:44:11,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:44:12,252 INFO L225 Difference]: With dead ends: 150086 [2022-07-12 06:44:12,252 INFO L226 Difference]: Without dead ends: 124468 [2022-07-12 06:44:12,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:44:12,306 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 1096 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:44:12,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 1477 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:44:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124468 states. [2022-07-12 06:44:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124468 to 83418. [2022-07-12 06:44:17,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83418 states, 83417 states have (on average 1.4528573312394355) internal successors, (121193), 83417 states have internal predecessors, (121193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:17,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83418 states to 83418 states and 121193 transitions. [2022-07-12 06:44:17,402 INFO L78 Accepts]: Start accepts. Automaton has 83418 states and 121193 transitions. Word has length 100 [2022-07-12 06:44:17,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:44:17,402 INFO L495 AbstractCegarLoop]: Abstraction has 83418 states and 121193 transitions. [2022-07-12 06:44:17,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:17,402 INFO L276 IsEmpty]: Start isEmpty. Operand 83418 states and 121193 transitions. [2022-07-12 06:44:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:44:17,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:44:17,412 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 06:44:17,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:44:17,413 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:44:17,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:44:17,413 INFO L85 PathProgramCache]: Analyzing trace with hash 589805596, now seen corresponding path program 1 times [2022-07-12 06:44:17,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:44:17,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385534377] [2022-07-12 06:44:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:44:17,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:44:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:44:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:44:17,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:44:17,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385534377] [2022-07-12 06:44:17,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385534377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:44:17,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:44:17,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:44:17,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42448683] [2022-07-12 06:44:17,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:44:17,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:44:17,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:44:17,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:44:17,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:44:17,440 INFO L87 Difference]: Start difference. First operand 83418 states and 121193 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:44:24,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:44:24,605 INFO L93 Difference]: Finished difference Result 213933 states and 310477 transitions. [2022-07-12 06:44:24,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:44:24,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-07-12 06:44:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:44:24,967 INFO L225 Difference]: With dead ends: 213933 [2022-07-12 06:44:24,967 INFO L226 Difference]: Without dead ends: 140843 [2022-07-12 06:44:25,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:44:25,029 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 87 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:44:25,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 334 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:44:25,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140843 states.