./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label46.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 829096e7f479f5346a6eede2bd426bfcc729b36401312306aa48ba670b26d42a --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 12:35:54,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 12:35:54,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 12:35:54,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 12:35:54,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 12:35:54,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 12:35:54,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 12:35:54,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 12:35:54,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 12:35:54,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 12:35:54,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 12:35:54,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 12:35:54,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 12:35:54,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 12:35:54,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 12:35:54,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 12:35:54,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 12:35:54,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 12:35:54,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 12:35:54,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 12:35:54,312 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 12:35:54,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 12:35:54,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 12:35:54,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 12:35:54,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 12:35:54,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 12:35:54,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 12:35:54,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 12:35:54,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 12:35:54,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 12:35:54,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 12:35:54,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 12:35:54,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 12:35:54,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 12:35:54,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 12:35:54,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 12:35:54,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 12:35:54,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 12:35:54,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 12:35:54,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 12:35:54,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 12:35:54,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 12:35:54,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 12:35:54,354 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 12:35:54,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 12:35:54,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 12:35:54,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 12:35:54,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 12:35:54,355 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 12:35:54,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 12:35:54,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 12:35:54,356 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 12:35:54,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 12:35:54,357 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 12:35:54,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 12:35:54,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 12:35:54,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 12:35:54,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 12:35:54,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 12:35:54,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 12:35:54,358 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 12:35:54,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 12:35:54,359 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 12:35:54,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 12:35:54,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 12:35:54,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 12:35:54,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 12:35:54,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:35:54,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 12:35:54,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 12:35:54,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 12:35:54,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 12:35:54,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 12:35:54,360 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 12:35:54,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 12:35:54,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 12:35:54,361 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 829096e7f479f5346a6eede2bd426bfcc729b36401312306aa48ba670b26d42a [2022-07-22 12:35:54,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 12:35:54,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 12:35:54,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 12:35:54,573 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 12:35:54,573 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 12:35:54,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label46.c [2022-07-22 12:35:54,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcafce5c4/a7b647d137434ff99dd266c715a3f920/FLAG677822551 [2022-07-22 12:35:55,123 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 12:35:55,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label46.c [2022-07-22 12:35:55,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcafce5c4/a7b647d137434ff99dd266c715a3f920/FLAG677822551 [2022-07-22 12:35:55,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcafce5c4/a7b647d137434ff99dd266c715a3f920 [2022-07-22 12:35:55,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 12:35:55,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 12:35:55,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 12:35:55,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 12:35:55,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 12:35:55,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:35:55" (1/1) ... [2022-07-22 12:35:55,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a5354c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:55, skipping insertion in model container [2022-07-22 12:35:55,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:35:55" (1/1) ... [2022-07-22 12:35:55,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 12:35:55,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 12:35:55,726 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/eca-rers2012/Problem13_label46.c[9366,9379] [2022-07-22 12:35:56,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:35:56,298 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 12:35:56,325 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/eca-rers2012/Problem13_label46.c[9366,9379] [2022-07-22 12:35:56,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:35:56,680 INFO L208 MainTranslator]: Completed translation [2022-07-22 12:35:56,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:56 WrapperNode [2022-07-22 12:35:56,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 12:35:56,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 12:35:56,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 12:35:56,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 12:35:56,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:56" (1/1) ... [2022-07-22 12:35:56,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:56" (1/1) ... [2022-07-22 12:35:57,276 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-07-22 12:35:57,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 12:35:57,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 12:35:57,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 12:35:57,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 12:35:57,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:56" (1/1) ... [2022-07-22 12:35:57,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:56" (1/1) ... [2022-07-22 12:35:57,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:56" (1/1) ... [2022-07-22 12:35:57,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:56" (1/1) ... [2022-07-22 12:35:57,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:56" (1/1) ... [2022-07-22 12:35:57,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:56" (1/1) ... [2022-07-22 12:35:57,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:56" (1/1) ... [2022-07-22 12:35:57,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 12:35:57,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 12:35:57,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 12:35:57,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 12:35:57,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:56" (1/1) ... [2022-07-22 12:35:57,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:35:57,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:35:57,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 12:35:57,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 12:35:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 12:35:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 12:35:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 12:35:57,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 12:35:57,952 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 12:35:57,968 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 12:36:01,451 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 12:36:01,467 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 12:36:01,467 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 12:36:01,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:36:01 BoogieIcfgContainer [2022-07-22 12:36:01,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 12:36:01,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 12:36:01,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 12:36:01,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 12:36:01,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:35:55" (1/3) ... [2022-07-22 12:36:01,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49361bda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:36:01, skipping insertion in model container [2022-07-22 12:36:01,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:56" (2/3) ... [2022-07-22 12:36:01,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49361bda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:36:01, skipping insertion in model container [2022-07-22 12:36:01,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:36:01" (3/3) ... [2022-07-22 12:36:01,479 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label46.c [2022-07-22 12:36:01,491 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 12:36:01,491 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 12:36:01,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 12:36:01,561 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@2d911f3c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@30b187d5 [2022-07-22 12:36:01,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 12:36:01,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:01,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 12:36:01,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:36:01,577 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] [2022-07-22 12:36:01,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:36:01,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:36:01,582 INFO L85 PathProgramCache]: Analyzing trace with hash -215114758, now seen corresponding path program 1 times [2022-07-22 12:36:01,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:36:01,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082795585] [2022-07-22 12:36:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:36:01,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:36:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:36:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:36:01,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:36:01,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082795585] [2022-07-22 12:36:01,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082795585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:36:01,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:36:01,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:36:01,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21149592] [2022-07-22 12:36:01,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:36:01,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:36:01,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:36:01,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:36:01,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:36:01,856 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 4 states, 4 states have (on average 16.5) 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) [2022-07-22 12:36:07,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:36:07,176 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2022-07-22 12:36:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:36:07,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) 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 [2022-07-22 12:36:07,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:36:07,206 INFO L225 Difference]: With dead ends: 3829 [2022-07-22 12:36:07,206 INFO L226 Difference]: Without dead ends: 2664 [2022-07-22 12:36:07,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 12:36:07,218 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 2658 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2658 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-22 12:36:07,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2658 Valid, 1067 Invalid, 5856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1610 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-22 12:36:07,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-07-22 12:36:07,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2022-07-22 12:36:07,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:07,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2022-07-22 12:36:07,321 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 66 [2022-07-22 12:36:07,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:36:07,322 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2022-07-22 12:36:07,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) 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) [2022-07-22 12:36:07,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2022-07-22 12:36:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-22 12:36:07,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:36:07,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:36:07,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 12:36:07,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:36:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:36:07,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1130712773, now seen corresponding path program 1 times [2022-07-22 12:36:07,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:36:07,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340866349] [2022-07-22 12:36:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:36:07,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:36:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:36:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:36:07,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:36:07,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340866349] [2022-07-22 12:36:07,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340866349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:36:07,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:36:07,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:36:07,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282719515] [2022-07-22 12:36:07,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:36:07,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:36:07,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:36:07,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:36:07,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:36:07,518 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:12,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:36:12,777 INFO L93 Difference]: Finished difference Result 7864 states and 12669 transitions. [2022-07-22 12:36:12,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:36:12,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2022-07-22 12:36:12,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:36:12,801 INFO L225 Difference]: With dead ends: 7864 [2022-07-22 12:36:12,801 INFO L226 Difference]: Without dead ends: 5990 [2022-07-22 12:36:12,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:36:12,811 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1613 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 6333 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 6333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-22 12:36:12,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1613 Valid, 1191 Invalid, 7164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 6333 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-22 12:36:12,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2022-07-22 12:36:12,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5859. [2022-07-22 12:36:12,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5858 states have (on average 1.4452031410037556) internal successors, (8466), 5858 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:12,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8466 transitions. [2022-07-22 12:36:12,994 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8466 transitions. Word has length 191 [2022-07-22 12:36:12,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:36:12,996 INFO L495 AbstractCegarLoop]: Abstraction has 5859 states and 8466 transitions. [2022-07-22 12:36:12,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:12,997 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8466 transitions. [2022-07-22 12:36:12,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-22 12:36:13,000 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:36:13,001 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:36:13,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 12:36:13,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:36:13,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:36:13,009 INFO L85 PathProgramCache]: Analyzing trace with hash -705330670, now seen corresponding path program 1 times [2022-07-22 12:36:13,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:36:13,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697528474] [2022-07-22 12:36:13,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:36:13,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:36:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:36:13,194 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-22 12:36:13,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:36:13,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697528474] [2022-07-22 12:36:13,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697528474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:36:13,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:36:13,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:36:13,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033583794] [2022-07-22 12:36:13,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:36:13,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:36:13,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:36:13,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:36:13,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:36:13,199 INFO L87 Difference]: Start difference. First operand 5859 states and 8466 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:36:16,231 INFO L93 Difference]: Finished difference Result 15687 states and 23390 transitions. [2022-07-22 12:36:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:36:16,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 233 [2022-07-22 12:36:16,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:36:16,260 INFO L225 Difference]: With dead ends: 15687 [2022-07-22 12:36:16,260 INFO L226 Difference]: Without dead ends: 10617 [2022-07-22 12:36:16,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:36:16,270 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 919 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:36:16,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 918 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 12:36:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10617 states. [2022-07-22 12:36:16,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10617 to 10608. [2022-07-22 12:36:16,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10607 states have (on average 1.3551428302064674) internal successors, (14374), 10607 states have internal predecessors, (14374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14374 transitions. [2022-07-22 12:36:16,415 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14374 transitions. Word has length 233 [2022-07-22 12:36:16,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:36:16,416 INFO L495 AbstractCegarLoop]: Abstraction has 10608 states and 14374 transitions. [2022-07-22 12:36:16,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:16,416 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14374 transitions. [2022-07-22 12:36:16,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-07-22 12:36:16,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:36:16,419 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:36:16,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 12:36:16,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:36:16,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:36:16,422 INFO L85 PathProgramCache]: Analyzing trace with hash 55372431, now seen corresponding path program 1 times [2022-07-22 12:36:16,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:36:16,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069679483] [2022-07-22 12:36:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:36:16,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:36:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:36:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 12:36:16,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:36:16,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069679483] [2022-07-22 12:36:16,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069679483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:36:16,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:36:16,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:36:16,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062481638] [2022-07-22 12:36:16,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:36:16,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:36:16,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:36:16,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:36:16,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:36:16,547 INFO L87 Difference]: Start difference. First operand 10608 states and 14374 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:19,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:36:19,489 INFO L93 Difference]: Finished difference Result 28351 states and 39240 transitions. [2022-07-22 12:36:19,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:36:19,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 247 [2022-07-22 12:36:19,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:36:19,528 INFO L225 Difference]: With dead ends: 28351 [2022-07-22 12:36:19,528 INFO L226 Difference]: Without dead ends: 18532 [2022-07-22 12:36:19,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:36:19,541 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 909 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:36:19,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 613 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 12:36:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18532 states. [2022-07-22 12:36:19,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18532 to 18523. [2022-07-22 12:36:19,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18522 states have (on average 1.3251268761472843) internal successors, (24544), 18522 states have internal predecessors, (24544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:19,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 24544 transitions. [2022-07-22 12:36:19,817 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 24544 transitions. Word has length 247 [2022-07-22 12:36:19,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:36:19,818 INFO L495 AbstractCegarLoop]: Abstraction has 18523 states and 24544 transitions. [2022-07-22 12:36:19,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:19,818 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 24544 transitions. [2022-07-22 12:36:19,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-07-22 12:36:19,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:36:19,821 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:36:19,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 12:36:19,822 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:36:19,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:36:19,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1367122238, now seen corresponding path program 1 times [2022-07-22 12:36:19,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:36:19,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644530831] [2022-07-22 12:36:19,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:36:19,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:36:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:36:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:36:19,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:36:19,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644530831] [2022-07-22 12:36:19,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644530831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:36:19,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:36:19,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:36:19,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127172704] [2022-07-22 12:36:19,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:36:19,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:36:19,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:36:19,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:36:19,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:36:19,929 INFO L87 Difference]: Start difference. First operand 18523 states and 24544 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:22,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:36:22,794 INFO L93 Difference]: Finished difference Result 52015 states and 69799 transitions. [2022-07-22 12:36:22,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:36:22,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 265 [2022-07-22 12:36:22,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:36:22,851 INFO L225 Difference]: With dead ends: 52015 [2022-07-22 12:36:22,851 INFO L226 Difference]: Without dead ends: 34281 [2022-07-22 12:36:22,866 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 [2022-07-22 12:36:22,880 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 852 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:36:22,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 951 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:36:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34281 states. [2022-07-22 12:36:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34281 to 34271. [2022-07-22 12:36:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34271 states, 34270 states have (on average 1.25503355704698) internal successors, (43010), 34270 states have internal predecessors, (43010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:23,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34271 states to 34271 states and 43010 transitions. [2022-07-22 12:36:23,289 INFO L78 Accepts]: Start accepts. Automaton has 34271 states and 43010 transitions. Word has length 265 [2022-07-22 12:36:23,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:36:23,290 INFO L495 AbstractCegarLoop]: Abstraction has 34271 states and 43010 transitions. [2022-07-22 12:36:23,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:23,293 INFO L276 IsEmpty]: Start isEmpty. Operand 34271 states and 43010 transitions. [2022-07-22 12:36:23,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-07-22 12:36:23,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:36:23,296 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:36:23,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 12:36:23,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:36:23,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:36:23,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1842505555, now seen corresponding path program 1 times [2022-07-22 12:36:23,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:36:23,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884893743] [2022-07-22 12:36:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:36:23,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:36:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:36:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-22 12:36:23,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:36:23,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884893743] [2022-07-22 12:36:23,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884893743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:36:23,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:36:23,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:36:23,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129912843] [2022-07-22 12:36:23,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:36:23,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:36:23,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:36:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:36:23,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:36:23,408 INFO L87 Difference]: Start difference. First operand 34271 states and 43010 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:26,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:36:26,405 INFO L93 Difference]: Finished difference Result 92929 states and 117620 transitions. [2022-07-22 12:36:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:36:26,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 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 296 [2022-07-22 12:36:26,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:36:26,482 INFO L225 Difference]: With dead ends: 92929 [2022-07-22 12:36:26,483 INFO L226 Difference]: Without dead ends: 59447 [2022-07-22 12:36:26,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:36:26,514 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:36:26,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 986 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 12:36:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59447 states. [2022-07-22 12:36:27,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59447 to 57869. [2022-07-22 12:36:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57869 states, 57868 states have (on average 1.1960496301928527) internal successors, (69213), 57868 states have internal predecessors, (69213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57869 states to 57869 states and 69213 transitions. [2022-07-22 12:36:27,164 INFO L78 Accepts]: Start accepts. Automaton has 57869 states and 69213 transitions. Word has length 296 [2022-07-22 12:36:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:36:27,165 INFO L495 AbstractCegarLoop]: Abstraction has 57869 states and 69213 transitions. [2022-07-22 12:36:27,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 57869 states and 69213 transitions. [2022-07-22 12:36:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-07-22 12:36:27,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:36:27,170 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:36:27,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 12:36:27,170 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:36:27,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:36:27,171 INFO L85 PathProgramCache]: Analyzing trace with hash -149242170, now seen corresponding path program 1 times [2022-07-22 12:36:27,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:36:27,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069663340] [2022-07-22 12:36:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:36:27,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:36:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:36:27,363 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 12:36:27,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:36:27,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069663340] [2022-07-22 12:36:27,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069663340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:36:27,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:36:27,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:36:27,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630691443] [2022-07-22 12:36:27,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:36:27,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:36:27,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:36:27,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:36:27,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:36:27,366 INFO L87 Difference]: Start difference. First operand 57869 states and 69213 transitions. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:33,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:36:33,560 INFO L93 Difference]: Finished difference Result 156098 states and 188760 transitions. [2022-07-22 12:36:33,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:36:33,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 334 [2022-07-22 12:36:33,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:36:33,728 INFO L225 Difference]: With dead ends: 156098 [2022-07-22 12:36:33,728 INFO L226 Difference]: Without dead ends: 99018 [2022-07-22 12:36:33,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:36:33,785 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1735 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6696 mSolverCounterSat, 1118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1118 IncrementalHoareTripleChecker+Valid, 6696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-22 12:36:33,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 743 Invalid, 7814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1118 Valid, 6696 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-22 12:36:34,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99018 states. [2022-07-22 12:36:34,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99018 to 98888. [2022-07-22 12:36:34,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98888 states, 98887 states have (on average 1.1899744152416394) internal successors, (117673), 98887 states have internal predecessors, (117673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:34,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98888 states to 98888 states and 117673 transitions. [2022-07-22 12:36:34,979 INFO L78 Accepts]: Start accepts. Automaton has 98888 states and 117673 transitions. Word has length 334 [2022-07-22 12:36:34,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:36:34,980 INFO L495 AbstractCegarLoop]: Abstraction has 98888 states and 117673 transitions. [2022-07-22 12:36:34,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 98888 states and 117673 transitions. [2022-07-22 12:36:34,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-07-22 12:36:34,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:36:34,986 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:36:34,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 12:36:34,987 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:36:34,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:36:34,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1385907952, now seen corresponding path program 1 times [2022-07-22 12:36:34,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:36:34,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963582179] [2022-07-22 12:36:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:36:34,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:36:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:36:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-22 12:36:35,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:36:35,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963582179] [2022-07-22 12:36:35,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963582179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:36:35,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:36:35,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:36:35,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754585044] [2022-07-22 12:36:35,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:36:35,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:36:35,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:36:35,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:36:35,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:36:35,400 INFO L87 Difference]: Start difference. First operand 98888 states and 117673 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:38,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:36:38,473 INFO L93 Difference]: Finished difference Result 182821 states and 219245 transitions. [2022-07-22 12:36:38,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:36:38,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 349 [2022-07-22 12:36:38,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:36:38,619 INFO L225 Difference]: With dead ends: 182821 [2022-07-22 12:36:38,619 INFO L226 Difference]: Without dead ends: 98900 [2022-07-22 12:36:38,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:36:38,668 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 730 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:36:38,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1202 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 12:36:38,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98900 states. [2022-07-22 12:36:39,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98900 to 98888. [2022-07-22 12:36:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98888 states, 98887 states have (on average 1.1890642854975881) internal successors, (117583), 98887 states have internal predecessors, (117583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:39,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98888 states to 98888 states and 117583 transitions. [2022-07-22 12:36:39,966 INFO L78 Accepts]: Start accepts. Automaton has 98888 states and 117583 transitions. Word has length 349 [2022-07-22 12:36:39,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:36:39,967 INFO L495 AbstractCegarLoop]: Abstraction has 98888 states and 117583 transitions. [2022-07-22 12:36:39,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:39,967 INFO L276 IsEmpty]: Start isEmpty. Operand 98888 states and 117583 transitions. [2022-07-22 12:36:39,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-07-22 12:36:39,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:36:39,972 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:36:39,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 12:36:39,972 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:36:39,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:36:39,972 INFO L85 PathProgramCache]: Analyzing trace with hash -788002906, now seen corresponding path program 1 times [2022-07-22 12:36:39,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:36:39,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811281105] [2022-07-22 12:36:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:36:39,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:36:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:36:40,289 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 271 proven. 110 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 12:36:40,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:36:40,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811281105] [2022-07-22 12:36:40,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811281105] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:36:40,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992852401] [2022-07-22 12:36:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:36:40,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:36:40,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:36:40,292 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) [2022-07-22 12:36:40,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 12:36:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:36:40,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 12:36:40,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:36:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-22 12:36:40,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:36:40,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992852401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:36:40,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:36:40,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-22 12:36:40,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314320057] [2022-07-22 12:36:40,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:36:40,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:36:40,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:36:40,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:36:40,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 12:36:40,568 INFO L87 Difference]: Start difference. First operand 98888 states and 117583 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:43,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:36:43,668 INFO L93 Difference]: Finished difference Result 196198 states and 233219 transitions. [2022-07-22 12:36:43,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:36:43,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 378 [2022-07-22 12:36:43,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:36:43,775 INFO L225 Difference]: With dead ends: 196198 [2022-07-22 12:36:43,775 INFO L226 Difference]: Without dead ends: 98099 [2022-07-22 12:36:43,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 12:36:43,794 INFO L413 NwaCegarLoop]: 1366 mSDtfsCounter, 1138 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:36:43,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 1448 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 12:36:43,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98099 states. [2022-07-22 12:36:44,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98099 to 98098. [2022-07-22 12:36:44,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98098 states, 98097 states have (on average 1.1390460462603342) internal successors, (111737), 98097 states have internal predecessors, (111737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:44,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98098 states to 98098 states and 111737 transitions. [2022-07-22 12:36:44,741 INFO L78 Accepts]: Start accepts. Automaton has 98098 states and 111737 transitions. Word has length 378 [2022-07-22 12:36:44,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:36:44,741 INFO L495 AbstractCegarLoop]: Abstraction has 98098 states and 111737 transitions. [2022-07-22 12:36:44,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:44,741 INFO L276 IsEmpty]: Start isEmpty. Operand 98098 states and 111737 transitions. [2022-07-22 12:36:44,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-07-22 12:36:44,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:36:44,746 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-07-22 12:36:44,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 12:36:44,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:36:44,949 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:36:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:36:44,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1962625282, now seen corresponding path program 1 times [2022-07-22 12:36:44,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:36:44,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550350007] [2022-07-22 12:36:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:36:44,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:36:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:36:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 12:36:45,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:36:45,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550350007] [2022-07-22 12:36:45,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550350007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:36:45,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:36:45,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:36:45,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667678800] [2022-07-22 12:36:45,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:36:45,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:36:45,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:36:45,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:36:45,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:36:45,218 INFO L87 Difference]: Start difference. First operand 98098 states and 111737 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:48,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:36:48,260 INFO L93 Difference]: Finished difference Result 193805 states and 220753 transitions. [2022-07-22 12:36:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:36:48,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 383 [2022-07-22 12:36:48,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:36:48,368 INFO L225 Difference]: With dead ends: 193805 [2022-07-22 12:36:48,368 INFO L226 Difference]: Without dead ends: 96496 [2022-07-22 12:36:48,388 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 [2022-07-22 12:36:48,389 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 1035 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 12:36:48,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1639 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 12:36:48,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96496 states. [2022-07-22 12:36:49,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96496 to 91764. [2022-07-22 12:36:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91764 states, 91763 states have (on average 1.098634525898238) internal successors, (100814), 91763 states have internal predecessors, (100814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:49,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91764 states to 91764 states and 100814 transitions. [2022-07-22 12:36:49,415 INFO L78 Accepts]: Start accepts. Automaton has 91764 states and 100814 transitions. Word has length 383 [2022-07-22 12:36:49,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:36:49,416 INFO L495 AbstractCegarLoop]: Abstraction has 91764 states and 100814 transitions. [2022-07-22 12:36:49,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:49,416 INFO L276 IsEmpty]: Start isEmpty. Operand 91764 states and 100814 transitions. [2022-07-22 12:36:49,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-07-22 12:36:49,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:36:49,421 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:36:49,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 12:36:49,422 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:36:49,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:36:49,422 INFO L85 PathProgramCache]: Analyzing trace with hash 357120976, now seen corresponding path program 1 times [2022-07-22 12:36:49,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:36:49,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191746076] [2022-07-22 12:36:49,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:36:49,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:36:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:36:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-22 12:36:49,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:36:49,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191746076] [2022-07-22 12:36:49,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191746076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:36:49,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:36:49,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:36:49,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147782909] [2022-07-22 12:36:49,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:36:49,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:36:49,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:36:49,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:36:49,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:36:49,544 INFO L87 Difference]: Start difference. First operand 91764 states and 100814 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:36:52,837 INFO L93 Difference]: Finished difference Result 215821 states and 236354 transitions. [2022-07-22 12:36:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:36:52,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 393 [2022-07-22 12:36:52,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:36:53,014 INFO L225 Difference]: With dead ends: 215821 [2022-07-22 12:36:53,014 INFO L226 Difference]: Without dead ends: 124846 [2022-07-22 12:36:53,070 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 [2022-07-22 12:36:53,070 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 798 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2481 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 12:36:53,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1140 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2481 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 12:36:53,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124846 states. [2022-07-22 12:36:54,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124846 to 120883. [2022-07-22 12:36:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120883 states, 120882 states have (on average 1.0858605913204613) internal successors, (131261), 120882 states have internal predecessors, (131261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:54,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120883 states to 120883 states and 131261 transitions. [2022-07-22 12:36:54,844 INFO L78 Accepts]: Start accepts. Automaton has 120883 states and 131261 transitions. Word has length 393 [2022-07-22 12:36:54,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:36:54,863 INFO L495 AbstractCegarLoop]: Abstraction has 120883 states and 131261 transitions. [2022-07-22 12:36:54,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:36:54,864 INFO L276 IsEmpty]: Start isEmpty. Operand 120883 states and 131261 transitions. [2022-07-22 12:36:54,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-07-22 12:36:54,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:36:54,867 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:36:54,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 12:36:54,868 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:36:54,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:36:54,868 INFO L85 PathProgramCache]: Analyzing trace with hash -284013078, now seen corresponding path program 1 times [2022-07-22 12:36:54,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:36:54,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644140647] [2022-07-22 12:36:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:36:54,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:36:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:36:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-07-22 12:36:54,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:36:54,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644140647] [2022-07-22 12:36:54,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644140647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:36:54,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:36:54,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:36:54,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593728312] [2022-07-22 12:36:54,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:36:54,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:36:54,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:36:54,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:36:54,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:36:54,984 INFO L87 Difference]: Start difference. First operand 120883 states and 131261 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 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) [2022-07-22 12:36:59,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:36:59,259 INFO L93 Difference]: Finished difference Result 292276 states and 318578 transitions. [2022-07-22 12:36:59,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:36:59,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 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) Word has length 395 [2022-07-22 12:36:59,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:36:59,465 INFO L225 Difference]: With dead ends: 292276 [2022-07-22 12:36:59,465 INFO L226 Difference]: Without dead ends: 171395 [2022-07-22 12:36:59,485 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 [2022-07-22 12:36:59,486 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 931 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 3139 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 3728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 3139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-22 12:36:59,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 688 Invalid, 3728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 3139 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-22 12:36:59,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171395 states. [2022-07-22 12:37:01,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171395 to 166557. [2022-07-22 12:37:01,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166557 states, 166556 states have (on average 1.0930738010038665) internal successors, (182058), 166556 states have internal predecessors, (182058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:37:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166557 states to 166557 states and 182058 transitions. [2022-07-22 12:37:01,489 INFO L78 Accepts]: Start accepts. Automaton has 166557 states and 182058 transitions. Word has length 395 [2022-07-22 12:37:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:37:01,490 INFO L495 AbstractCegarLoop]: Abstraction has 166557 states and 182058 transitions. [2022-07-22 12:37:01,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 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) [2022-07-22 12:37:01,490 INFO L276 IsEmpty]: Start isEmpty. Operand 166557 states and 182058 transitions. [2022-07-22 12:37:01,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-07-22 12:37:01,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:37:01,499 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 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] [2022-07-22 12:37:01,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 12:37:01,499 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:37:01,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:37:01,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1321188077, now seen corresponding path program 1 times [2022-07-22 12:37:01,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:37:01,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859356919] [2022-07-22 12:37:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:37:01,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:37:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:37:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-07-22 12:37:01,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:37:01,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859356919] [2022-07-22 12:37:01,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859356919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:37:01,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:37:01,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:37:01,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859479206] [2022-07-22 12:37:01,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:37:01,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:37:01,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:37:01,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:37:01,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:37:01,984 INFO L87 Difference]: Start difference. First operand 166557 states and 182058 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:37:05,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:37:05,691 INFO L93 Difference]: Finished difference Result 379554 states and 417502 transitions. [2022-07-22 12:37:05,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:37:05,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 469 [2022-07-22 12:37:05,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:37:06,024 INFO L225 Difference]: With dead ends: 379554 [2022-07-22 12:37:06,025 INFO L226 Difference]: Without dead ends: 213786 [2022-07-22 12:37:06,102 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 [2022-07-22 12:37:06,102 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 924 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 959 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 3368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 959 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:37:06,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 841 Invalid, 3368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [959 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 12:37:06,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213786 states. [2022-07-22 12:37:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213786 to 210617. [2022-07-22 12:37:08,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210617 states, 210616 states have (on average 1.0952539218293007) internal successors, (230678), 210616 states have internal predecessors, (230678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:37:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210617 states to 210617 states and 230678 transitions. [2022-07-22 12:37:08,871 INFO L78 Accepts]: Start accepts. Automaton has 210617 states and 230678 transitions. Word has length 469 [2022-07-22 12:37:08,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:37:08,872 INFO L495 AbstractCegarLoop]: Abstraction has 210617 states and 230678 transitions. [2022-07-22 12:37:08,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:37:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 210617 states and 230678 transitions. [2022-07-22 12:37:08,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-07-22 12:37:08,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:37:08,881 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:37:08,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 12:37:08,881 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:37:08,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:37:08,881 INFO L85 PathProgramCache]: Analyzing trace with hash 389350022, now seen corresponding path program 1 times [2022-07-22 12:37:08,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:37:08,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183336696] [2022-07-22 12:37:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:37:08,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:37:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:37:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-22 12:37:09,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:37:09,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183336696] [2022-07-22 12:37:09,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183336696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:37:09,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:37:09,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:37:09,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30905995] [2022-07-22 12:37:09,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:37:09,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:37:09,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:37:09,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:37:09,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:37:09,350 INFO L87 Difference]: Start difference. First operand 210617 states and 230678 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:37:13,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:37:13,188 INFO L93 Difference]: Finished difference Result 423596 states and 463739 transitions. [2022-07-22 12:37:13,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:37:13,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 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 470 [2022-07-22 12:37:13,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:37:13,509 INFO L225 Difference]: With dead ends: 423596 [2022-07-22 12:37:13,509 INFO L226 Difference]: Without dead ends: 213768 [2022-07-22 12:37:13,603 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 [2022-07-22 12:37:13,603 INFO L413 NwaCegarLoop]: 1382 mSDtfsCounter, 971 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 12:37:13,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 1468 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 12:37:13,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213768 states. [2022-07-22 12:37:16,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213768 to 210605. [2022-07-22 12:37:16,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210605 states, 210604 states have (on average 1.0712332149436858) internal successors, (225606), 210604 states have internal predecessors, (225606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:37:16,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210605 states to 210605 states and 225606 transitions. [2022-07-22 12:37:16,398 INFO L78 Accepts]: Start accepts. Automaton has 210605 states and 225606 transitions. Word has length 470 [2022-07-22 12:37:16,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:37:16,399 INFO L495 AbstractCegarLoop]: Abstraction has 210605 states and 225606 transitions. [2022-07-22 12:37:16,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:37:16,399 INFO L276 IsEmpty]: Start isEmpty. Operand 210605 states and 225606 transitions. [2022-07-22 12:37:16,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2022-07-22 12:37:16,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:37:16,416 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:37:16,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 12:37:16,417 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:37:16,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:37:16,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2028799798, now seen corresponding path program 1 times [2022-07-22 12:37:16,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:37:16,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44285747] [2022-07-22 12:37:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:37:16,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:37:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:37:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 365 proven. 113 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 12:37:16,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:37:16,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44285747] [2022-07-22 12:37:16,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44285747] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:37:16,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485994317] [2022-07-22 12:37:16,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:37:16,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:37:16,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:37:16,654 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:37:16,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 12:37:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:37:16,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 12:37:16,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:37:17,360 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 365 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-22 12:37:17,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:37:17,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485994317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:37:17,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:37:17,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 12:37:17,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377461452] [2022-07-22 12:37:17,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:37:17,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:37:17,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:37:17,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:37:17,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:37:17,362 INFO L87 Difference]: Start difference. First operand 210605 states and 225606 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:37:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:37:21,055 INFO L93 Difference]: Finished difference Result 407052 states and 436715 transitions. [2022-07-22 12:37:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:37:21,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 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 557 [2022-07-22 12:37:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:37:21,340 INFO L225 Difference]: With dead ends: 407052 [2022-07-22 12:37:21,340 INFO L226 Difference]: Without dead ends: 214553 [2022-07-22 12:37:21,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-22 12:37:21,426 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 683 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:37:21,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1134 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 12:37:21,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214553 states. [2022-07-22 12:37:23,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214553 to 211393. [2022-07-22 12:37:23,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211393 states, 211392 states have (on average 1.0654565924916741) internal successors, (225229), 211392 states have internal predecessors, (225229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:37:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211393 states to 211393 states and 225229 transitions. [2022-07-22 12:37:23,862 INFO L78 Accepts]: Start accepts. Automaton has 211393 states and 225229 transitions. Word has length 557 [2022-07-22 12:37:23,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:37:23,862 INFO L495 AbstractCegarLoop]: Abstraction has 211393 states and 225229 transitions. [2022-07-22 12:37:23,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:37:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 211393 states and 225229 transitions. [2022-07-22 12:37:23,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2022-07-22 12:37:23,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:37:23,880 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:37:23,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 12:37:24,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 12:37:24,092 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:37:24,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:37:24,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2138163838, now seen corresponding path program 1 times [2022-07-22 12:37:24,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:37:24,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925857469] [2022-07-22 12:37:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:37:24,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:37:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:37:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-07-22 12:37:24,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:37:24,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925857469] [2022-07-22 12:37:24,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925857469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:37:24,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:37:24,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:37:24,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596102035] [2022-07-22 12:37:24,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:37:24,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:37:24,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:37:24,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:37:24,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:37:24,688 INFO L87 Difference]: Start difference. First operand 211393 states and 225229 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)