./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label19.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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_label19.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 a964c9c76c4af918501d56362d39292d13dbbfa4832d6b5721a3773b73fa584b --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 09:43:17,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 09:43:17,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 09:43:17,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 09:43:17,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 09:43:17,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 09:43:17,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 09:43:17,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 09:43:17,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 09:43:17,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 09:43:17,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 09:43:17,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 09:43:17,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 09:43:17,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 09:43:17,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 09:43:17,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 09:43:17,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 09:43:17,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 09:43:17,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 09:43:17,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 09:43:17,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 09:43:17,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 09:43:17,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 09:43:17,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 09:43:17,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 09:43:17,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 09:43:17,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 09:43:17,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 09:43:17,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 09:43:17,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 09:43:17,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 09:43:17,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 09:43:17,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 09:43:17,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 09:43:17,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 09:43:17,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 09:43:17,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 09:43:17,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 09:43:17,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 09:43:17,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 09:43:17,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 09:43:17,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 09:43:17,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 09:43:17,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 09:43:17,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 09:43:17,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 09:43:17,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 09:43:17,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 09:43:17,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 09:43:17,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 09:43:17,215 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 09:43:17,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 09:43:17,216 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 09:43:17,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 09:43:17,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 09:43:17,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 09:43:17,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 09:43:17,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 09:43:17,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 09:43:17,217 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 09:43:17,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 09:43:17,218 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 09:43:17,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 09:43:17,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 09:43:17,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 09:43:17,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 09:43:17,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 09:43:17,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 09:43:17,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 09:43:17,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 09:43:17,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 09:43:17,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 09:43:17,221 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 09:43:17,221 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 09:43:17,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 09:43:17,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 09:43:17,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a964c9c76c4af918501d56362d39292d13dbbfa4832d6b5721a3773b73fa584b [2021-12-15 09:43:17,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 09:43:17,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 09:43:17,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 09:43:17,491 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 09:43:17,491 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 09:43:17,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label19.c [2021-12-15 09:43:17,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354bc767b/8d7df684b85742a2aa7ff356a547acb7/FLAGffc244491 [2021-12-15 09:43:18,176 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 09:43:18,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label19.c [2021-12-15 09:43:18,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354bc767b/8d7df684b85742a2aa7ff356a547acb7/FLAGffc244491 [2021-12-15 09:43:18,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354bc767b/8d7df684b85742a2aa7ff356a547acb7 [2021-12-15 09:43:18,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 09:43:18,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 09:43:18,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 09:43:18,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 09:43:18,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 09:43:18,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:43:18" (1/1) ... [2021-12-15 09:43:18,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c586eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:43:18, skipping insertion in model container [2021-12-15 09:43:18,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:43:18" (1/1) ... [2021-12-15 09:43:18,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 09:43:18,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 09:43:18,621 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_label19.c[2731,2744] [2021-12-15 09:43:19,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 09:43:19,428 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 09:43:19,445 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_label19.c[2731,2744] [2021-12-15 09:43:19,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 09:43:19,897 INFO L208 MainTranslator]: Completed translation [2021-12-15 09:43:19,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:43:19 WrapperNode [2021-12-15 09:43:19,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 09:43:19,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 09:43:19,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 09:43:19,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 09:43:19,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:43:19" (1/1) ... [2021-12-15 09:43:19,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:43:19" (1/1) ... [2021-12-15 09:43:20,477 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2021-12-15 09:43:20,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 09:43:20,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 09:43:20,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 09:43:20,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 09:43:20,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:43:19" (1/1) ... [2021-12-15 09:43:20,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:43:19" (1/1) ... [2021-12-15 09:43:20,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:43:19" (1/1) ... [2021-12-15 09:43:20,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:43:19" (1/1) ... [2021-12-15 09:43:20,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:43:19" (1/1) ... [2021-12-15 09:43:21,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:43:19" (1/1) ... [2021-12-15 09:43:21,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:43:19" (1/1) ... [2021-12-15 09:43:21,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 09:43:21,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 09:43:21,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 09:43:21,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 09:43:21,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:43:19" (1/1) ... [2021-12-15 09:43:21,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 09:43:21,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:43:21,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 09:43:21,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 09:43:21,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 09:43:21,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 09:43:21,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 09:43:21,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 09:43:21,339 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 09:43:21,340 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 09:43:25,565 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 09:43:25,583 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 09:43:25,584 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 09:43:25,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:43:25 BoogieIcfgContainer [2021-12-15 09:43:25,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 09:43:25,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 09:43:25,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 09:43:25,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 09:43:25,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:43:18" (1/3) ... [2021-12-15 09:43:25,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffb73e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:43:25, skipping insertion in model container [2021-12-15 09:43:25,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:43:19" (2/3) ... [2021-12-15 09:43:25,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffb73e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:43:25, skipping insertion in model container [2021-12-15 09:43:25,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:43:25" (3/3) ... [2021-12-15 09:43:25,595 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label19.c [2021-12-15 09:43:25,600 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 09:43:25,600 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 09:43:25,651 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 09:43:25,656 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 09:43:25,656 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 09:43:25,693 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) [2021-12-15 09:43:25,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-15 09:43:25,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:43:25,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:43:25,704 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:43:25,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:43:25,709 INFO L85 PathProgramCache]: Analyzing trace with hash 156847385, now seen corresponding path program 1 times [2021-12-15 09:43:25,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:43:25,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077145525] [2021-12-15 09:43:25,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:43:25,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:43:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:43:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:43:25,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:43:25,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077145525] [2021-12-15 09:43:25,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077145525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:43:25,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:43:25,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:43:25,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757656472] [2021-12-15 09:43:25,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:43:25,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:43:25,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:43:25,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:43:25,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:43:25,986 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 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:30,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:43:30,265 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2021-12-15 09:43:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:43:30,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-12-15 09:43:30,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:43:30,286 INFO L225 Difference]: With dead ends: 3082 [2021-12-15 09:43:30,287 INFO L226 Difference]: Without dead ends: 1899 [2021-12-15 09:43:30,294 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:43:30,297 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 1022 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-15 09:43:30,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1022 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-15 09:43:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2021-12-15 09:43:30,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2021-12-15 09:43:30,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2021-12-15 09:43:30,407 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 17 [2021-12-15 09:43:30,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:43:30,408 INFO L470 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2021-12-15 09:43:30,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:30,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2021-12-15 09:43:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-15 09:43:30,411 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:43:30,411 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 09:43:30,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 09:43:30,413 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:43:30,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:43:30,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2103739474, now seen corresponding path program 1 times [2021-12-15 09:43:30,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:43:30,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451760700] [2021-12-15 09:43:30,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:43:30,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:43:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:43:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:43:30,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:43:30,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451760700] [2021-12-15 09:43:30,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451760700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:43:30,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:43:30,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:43:30,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266349835] [2021-12-15 09:43:30,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:43:30,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 09:43:30,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:43:30,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 09:43:30,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 09:43:30,572 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:36,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:43:36,347 INFO L93 Difference]: Finished difference Result 6175 states and 10777 transitions. [2021-12-15 09:43:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 09:43:36,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-12-15 09:43:36,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:43:36,375 INFO L225 Difference]: With dead ends: 6175 [2021-12-15 09:43:36,376 INFO L226 Difference]: Without dead ends: 4283 [2021-12-15 09:43:36,383 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:43:36,385 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 2572 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 4232 mSolverCounterSat, 1314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2572 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 5546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1314 IncrementalHoareTripleChecker+Valid, 4232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-15 09:43:36,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2572 Valid, 1098 Invalid, 5546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1314 Valid, 4232 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-15 09:43:36,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2021-12-15 09:43:36,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 4282. [2021-12-15 09:43:36,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 4281 states have (on average 1.4882036907264657) internal successors, (6371), 4281 states have internal predecessors, (6371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:36,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 6371 transitions. [2021-12-15 09:43:36,479 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 6371 transitions. Word has length 82 [2021-12-15 09:43:36,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:43:36,480 INFO L470 AbstractCegarLoop]: Abstraction has 4282 states and 6371 transitions. [2021-12-15 09:43:36,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:36,481 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 6371 transitions. [2021-12-15 09:43:36,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-15 09:43:36,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:43:36,487 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 09:43:36,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 09:43:36,489 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:43:36,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:43:36,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1353224751, now seen corresponding path program 1 times [2021-12-15 09:43:36,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:43:36,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935094767] [2021-12-15 09:43:36,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:43:36,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:43:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:43:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:43:36,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:43:36,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935094767] [2021-12-15 09:43:36,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935094767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:43:36,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:43:36,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:43:36,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657175898] [2021-12-15 09:43:36,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:43:36,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:43:36,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:43:36,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:43:36,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:43:36,622 INFO L87 Difference]: Start difference. First operand 4282 states and 6371 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:39,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:43:39,343 INFO L93 Difference]: Finished difference Result 7762 states and 11936 transitions. [2021-12-15 09:43:39,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:43:39,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2021-12-15 09:43:39,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:43:39,361 INFO L225 Difference]: With dead ends: 7762 [2021-12-15 09:43:39,361 INFO L226 Difference]: Without dead ends: 4269 [2021-12-15 09:43:39,367 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:43:39,368 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 1115 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 2954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-15 09:43:39,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1115 Valid, 1678 Invalid, 2954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-15 09:43:39,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2021-12-15 09:43:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 4267. [2021-12-15 09:43:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4267 states, 4266 states have (on average 1.3330989217065166) internal successors, (5687), 4266 states have internal predecessors, (5687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:39,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 5687 transitions. [2021-12-15 09:43:39,498 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 5687 transitions. Word has length 142 [2021-12-15 09:43:39,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:43:39,501 INFO L470 AbstractCegarLoop]: Abstraction has 4267 states and 5687 transitions. [2021-12-15 09:43:39,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:39,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 5687 transitions. [2021-12-15 09:43:39,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-15 09:43:39,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:43:39,511 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2021-12-15 09:43:39,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 09:43:39,512 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:43:39,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:43:39,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2028944679, now seen corresponding path program 1 times [2021-12-15 09:43:39,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:43:39,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450198366] [2021-12-15 09:43:39,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:43:39,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:43:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:43:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:43:39,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:43:39,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450198366] [2021-12-15 09:43:39,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450198366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:43:39,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:43:39,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:43:39,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302923227] [2021-12-15 09:43:39,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:43:39,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:43:39,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:43:39,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:43:39,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:43:39,669 INFO L87 Difference]: Start difference. First operand 4267 states and 5687 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:42,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:43:42,656 INFO L93 Difference]: Finished difference Result 10915 states and 15072 transitions. [2021-12-15 09:43:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:43:42,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2021-12-15 09:43:42,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:43:42,684 INFO L225 Difference]: With dead ends: 10915 [2021-12-15 09:43:42,685 INFO L226 Difference]: Without dead ends: 7437 [2021-12-15 09:43:42,692 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:43:42,699 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 896 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 922 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 922 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-15 09:43:42,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 889 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [922 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-15 09:43:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7437 states. [2021-12-15 09:43:42,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7437 to 7429. [2021-12-15 09:43:42,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7429 states, 7428 states have (on average 1.27140549273021) internal successors, (9444), 7428 states have internal predecessors, (9444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7429 states to 7429 states and 9444 transitions. [2021-12-15 09:43:42,832 INFO L78 Accepts]: Start accepts. Automaton has 7429 states and 9444 transitions. Word has length 180 [2021-12-15 09:43:42,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:43:42,833 INFO L470 AbstractCegarLoop]: Abstraction has 7429 states and 9444 transitions. [2021-12-15 09:43:42,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:42,834 INFO L276 IsEmpty]: Start isEmpty. Operand 7429 states and 9444 transitions. [2021-12-15 09:43:42,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-12-15 09:43:42,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:43:42,836 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2021-12-15 09:43:42,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 09:43:42,836 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:43:42,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:43:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash 355178967, now seen corresponding path program 1 times [2021-12-15 09:43:42,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:43:42,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223632413] [2021-12-15 09:43:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:43:42,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:43:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:43:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-15 09:43:42,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:43:42,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223632413] [2021-12-15 09:43:42,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223632413] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:43:42,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:43:42,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:43:42,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691636086] [2021-12-15 09:43:42,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:43:42,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:43:42,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:43:42,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:43:42,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:43:42,956 INFO L87 Difference]: Start difference. First operand 7429 states and 9444 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:45,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:43:45,959 INFO L93 Difference]: Finished difference Result 20360 states and 26298 transitions. [2021-12-15 09:43:45,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:43:45,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 192 [2021-12-15 09:43:45,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:43:45,997 INFO L225 Difference]: With dead ends: 20360 [2021-12-15 09:43:45,998 INFO L226 Difference]: Without dead ends: 13720 [2021-12-15 09:43:46,006 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:43:46,006 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 859 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 3204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-15 09:43:46,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 1024 Invalid, 3204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [868 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-15 09:43:46,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13720 states. [2021-12-15 09:43:46,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13720 to 13719. [2021-12-15 09:43:46,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13719 states, 13718 states have (on average 1.2019244787869952) internal successors, (16488), 13718 states have internal predecessors, (16488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:46,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13719 states to 13719 states and 16488 transitions. [2021-12-15 09:43:46,229 INFO L78 Accepts]: Start accepts. Automaton has 13719 states and 16488 transitions. Word has length 192 [2021-12-15 09:43:46,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:43:46,231 INFO L470 AbstractCegarLoop]: Abstraction has 13719 states and 16488 transitions. [2021-12-15 09:43:46,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:46,234 INFO L276 IsEmpty]: Start isEmpty. Operand 13719 states and 16488 transitions. [2021-12-15 09:43:46,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-12-15 09:43:46,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:43:46,237 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2021-12-15 09:43:46,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 09:43:46,237 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:43:46,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:43:46,238 INFO L85 PathProgramCache]: Analyzing trace with hash -138814510, now seen corresponding path program 1 times [2021-12-15 09:43:46,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:43:46,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391570316] [2021-12-15 09:43:46,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:43:46,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:43:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:43:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:43:46,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:43:46,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391570316] [2021-12-15 09:43:46,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391570316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:43:46,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:43:46,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:43:46,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235544398] [2021-12-15 09:43:46,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:43:46,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:43:46,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:43:46,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:43:46,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:43:46,392 INFO L87 Difference]: Start difference. First operand 13719 states and 16488 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:49,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:43:49,193 INFO L93 Difference]: Finished difference Result 32970 states and 39353 transitions. [2021-12-15 09:43:49,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:43:49,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 229 [2021-12-15 09:43:49,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:43:49,231 INFO L225 Difference]: With dead ends: 32970 [2021-12-15 09:43:49,231 INFO L226 Difference]: Without dead ends: 20040 [2021-12-15 09:43:49,246 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:43:49,247 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 765 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-15 09:43:49,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 1864 Invalid, 2841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-15 09:43:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20040 states. [2021-12-15 09:43:49,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20040 to 19230. [2021-12-15 09:43:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19230 states, 19229 states have (on average 1.1674554058973425) internal successors, (22449), 19229 states have internal predecessors, (22449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:49,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19230 states to 19230 states and 22449 transitions. [2021-12-15 09:43:49,520 INFO L78 Accepts]: Start accepts. Automaton has 19230 states and 22449 transitions. Word has length 229 [2021-12-15 09:43:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:43:49,521 INFO L470 AbstractCegarLoop]: Abstraction has 19230 states and 22449 transitions. [2021-12-15 09:43:49,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:49,521 INFO L276 IsEmpty]: Start isEmpty. Operand 19230 states and 22449 transitions. [2021-12-15 09:43:49,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-12-15 09:43:49,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:43:49,526 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2021-12-15 09:43:49,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 09:43:49,526 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:43:49,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:43:49,527 INFO L85 PathProgramCache]: Analyzing trace with hash 258809024, now seen corresponding path program 1 times [2021-12-15 09:43:49,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:43:49,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551059092] [2021-12-15 09:43:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:43:49,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:43:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:43:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2021-12-15 09:43:49,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:43:49,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551059092] [2021-12-15 09:43:49,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551059092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:43:49,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:43:49,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:43:49,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955245716] [2021-12-15 09:43:49,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:43:49,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:43:49,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:43:49,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:43:49,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:43:49,655 INFO L87 Difference]: Start difference. First operand 19230 states and 22449 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:52,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:43:52,943 INFO L93 Difference]: Finished difference Result 51865 states and 60989 transitions. [2021-12-15 09:43:52,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:43:52,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 269 [2021-12-15 09:43:52,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:43:53,014 INFO L225 Difference]: With dead ends: 51865 [2021-12-15 09:43:53,014 INFO L226 Difference]: Without dead ends: 32633 [2021-12-15 09:43:53,037 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:43:53,038 INFO L933 BasicCegarLoop]: 734 mSDtfsCounter, 916 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-15 09:43:53,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 861 Invalid, 3289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-15 09:43:53,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32633 states. [2021-12-15 09:43:53,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32633 to 31834. [2021-12-15 09:43:53,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31834 states, 31833 states have (on average 1.1326610749850783) internal successors, (36056), 31833 states have internal predecessors, (36056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31834 states to 31834 states and 36056 transitions. [2021-12-15 09:43:53,459 INFO L78 Accepts]: Start accepts. Automaton has 31834 states and 36056 transitions. Word has length 269 [2021-12-15 09:43:53,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:43:53,460 INFO L470 AbstractCegarLoop]: Abstraction has 31834 states and 36056 transitions. [2021-12-15 09:43:53,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 31834 states and 36056 transitions. [2021-12-15 09:43:53,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-15 09:43:53,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:43:53,465 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 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] [2021-12-15 09:43:53,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 09:43:53,466 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:43:53,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:43:53,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1010573165, now seen corresponding path program 1 times [2021-12-15 09:43:53,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:43:53,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916317252] [2021-12-15 09:43:53,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:43:53,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:43:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:43:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-15 09:43:53,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:43:53,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916317252] [2021-12-15 09:43:53,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916317252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:43:53,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:43:53,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:43:53,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304204403] [2021-12-15 09:43:53,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:43:53,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:43:53,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:43:53,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:43:53,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:43:53,597 INFO L87 Difference]: Start difference. First operand 31834 states and 36056 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:57,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:43:57,215 INFO L93 Difference]: Finished difference Result 74692 states and 85608 transitions. [2021-12-15 09:43:57,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:43:57,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 308 [2021-12-15 09:43:57,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:43:57,281 INFO L225 Difference]: With dead ends: 74692 [2021-12-15 09:43:57,282 INFO L226 Difference]: Without dead ends: 43647 [2021-12-15 09:43:57,311 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:43:57,311 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 851 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 3243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-15 09:43:57,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 1914 Invalid, 3243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-15 09:43:57,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43647 states. [2021-12-15 09:43:57,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43647 to 42856. [2021-12-15 09:43:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42856 states, 42855 states have (on average 1.114782405786956) internal successors, (47774), 42855 states have internal predecessors, (47774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42856 states to 42856 states and 47774 transitions. [2021-12-15 09:43:57,851 INFO L78 Accepts]: Start accepts. Automaton has 42856 states and 47774 transitions. Word has length 308 [2021-12-15 09:43:57,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:43:57,852 INFO L470 AbstractCegarLoop]: Abstraction has 42856 states and 47774 transitions. [2021-12-15 09:43:57,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:43:57,852 INFO L276 IsEmpty]: Start isEmpty. Operand 42856 states and 47774 transitions. [2021-12-15 09:43:57,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-12-15 09:43:57,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:43:57,858 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:43:57,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 09:43:57,859 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:43:57,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:43:57,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2097248158, now seen corresponding path program 1 times [2021-12-15 09:43:57,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:43:57,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253977634] [2021-12-15 09:43:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:43:57,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:43:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:43:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 189 proven. 110 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-15 09:43:58,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:43:58,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253977634] [2021-12-15 09:43:58,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253977634] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 09:43:58,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4350738] [2021-12-15 09:43:58,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:43:58,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:43:58,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:43:58,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 09:43:58,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 09:43:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:43:58,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 09:43:58,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 09:43:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-12-15 09:43:58,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 09:43:58,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4350738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:43:58,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 09:43:58,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2021-12-15 09:43:58,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546395017] [2021-12-15 09:43:58,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:43:58,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:43:58,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:43:58,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:43:58,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-15 09:43:58,803 INFO L87 Difference]: Start difference. First operand 42856 states and 47774 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) [2021-12-15 09:44:01,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:44:01,656 INFO L93 Difference]: Finished difference Result 84921 states and 94753 transitions. [2021-12-15 09:44:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:44:01,657 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 337 [2021-12-15 09:44:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:44:01,714 INFO L225 Difference]: With dead ends: 84921 [2021-12-15 09:44:01,715 INFO L226 Difference]: Without dead ends: 42854 [2021-12-15 09:44:01,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-15 09:44:01,742 INFO L933 BasicCegarLoop]: 1342 mSDtfsCounter, 1119 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-15 09:44:01,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 1421 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-15 09:44:01,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42854 states. [2021-12-15 09:44:02,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42854 to 42853. [2021-12-15 09:44:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42853 states, 42852 states have (on average 1.0876738541958368) internal successors, (46609), 42852 states have internal predecessors, (46609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:44:02,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42853 states to 42853 states and 46609 transitions. [2021-12-15 09:44:02,206 INFO L78 Accepts]: Start accepts. Automaton has 42853 states and 46609 transitions. Word has length 337 [2021-12-15 09:44:02,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:44:02,207 INFO L470 AbstractCegarLoop]: Abstraction has 42853 states and 46609 transitions. [2021-12-15 09:44:02,207 INFO L471 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) [2021-12-15 09:44:02,207 INFO L276 IsEmpty]: Start isEmpty. Operand 42853 states and 46609 transitions. [2021-12-15 09:44:02,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-12-15 09:44:02,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:44:02,216 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 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, 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] [2021-12-15 09:44:02,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 09:44:02,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:44:02,442 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:44:02,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:44:02,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1777497378, now seen corresponding path program 1 times [2021-12-15 09:44:02,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:44:02,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54794757] [2021-12-15 09:44:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:44:02,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:44:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:44:02,562 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-15 09:44:02,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:44:02,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54794757] [2021-12-15 09:44:02,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54794757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:44:02,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:44:02,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:44:02,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906174812] [2021-12-15 09:44:02,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:44:02,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 09:44:02,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:44:02,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 09:44:02,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 09:44:02,565 INFO L87 Difference]: Start difference. First operand 42853 states and 46609 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:44:08,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:44:08,912 INFO L93 Difference]: Finished difference Result 147299 states and 160577 transitions. [2021-12-15 09:44:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 09:44:08,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 365 [2021-12-15 09:44:08,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:44:09,045 INFO L225 Difference]: With dead ends: 147299 [2021-12-15 09:44:09,046 INFO L226 Difference]: Without dead ends: 105235 [2021-12-15 09:44:09,083 INFO L932 BasicCegarLoop]: 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 [2021-12-15 09:44:09,083 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1700 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 6630 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 7649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 6630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-15 09:44:09,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1700 Valid, 807 Invalid, 7649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 6630 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-12-15 09:44:09,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105235 states. [2021-12-15 09:44:10,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105235 to 102742. [2021-12-15 09:44:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102742 states, 102741 states have (on average 1.079715011533857) internal successors, (110931), 102741 states have internal predecessors, (110931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:44:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102742 states to 102742 states and 110931 transitions. [2021-12-15 09:44:10,446 INFO L78 Accepts]: Start accepts. Automaton has 102742 states and 110931 transitions. Word has length 365 [2021-12-15 09:44:10,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:44:10,446 INFO L470 AbstractCegarLoop]: Abstraction has 102742 states and 110931 transitions. [2021-12-15 09:44:10,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 09:44:10,447 INFO L276 IsEmpty]: Start isEmpty. Operand 102742 states and 110931 transitions. [2021-12-15 09:44:10,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2021-12-15 09:44:10,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:44:10,454 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 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, 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] [2021-12-15 09:44:10,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 09:44:10,454 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:44:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:44:10,455 INFO L85 PathProgramCache]: Analyzing trace with hash 155730976, now seen corresponding path program 1 times [2021-12-15 09:44:10,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:44:10,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876029711] [2021-12-15 09:44:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:44:10,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms