./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.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 958778a599a0592241cec2803e04add83a2302d606be24f73b4e8727645b338d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:01:45,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:01:45,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:01:45,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:01:45,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:01:45,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:01:45,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:01:45,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:01:45,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:01:45,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:01:45,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:01:45,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:01:45,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:01:45,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:01:45,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:01:45,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:01:45,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:01:45,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:01:45,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:01:45,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:01:45,185 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:01:45,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:01:45,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:01:45,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:01:45,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:01:45,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:01:45,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:01:45,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:01:45,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:01:45,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:01:45,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:01:45,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:01:45,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:01:45,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:01:45,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:01:45,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:01:45,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:01:45,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:01:45,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:01:45,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:01:45,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:01:45,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:01:45,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:01:45,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:01:45,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:01:45,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:01:45,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:01:45,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:01:45,237 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:01:45,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:01:45,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:01:45,239 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:01:45,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:01:45,240 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:01:45,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:01:45,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:01:45,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:01:45,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:01:45,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:01:45,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:01:45,241 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:01:45,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:01:45,242 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:01:45,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:01:45,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:01:45,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:01:45,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:01:45,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:01:45,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:01:45,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:01:45,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:01:45,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:01:45,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:01:45,245 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:01:45,245 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:01:45,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:01:45,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 958778a599a0592241cec2803e04add83a2302d606be24f73b4e8727645b338d [2022-07-13 21:01:45,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:01:45,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:01:45,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:01:45,522 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:01:45,523 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:01:45,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-07-13 21:01:45,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b62dca90/1911dca23d8f43e3a1b691620f560ec8/FLAGc4764b7db [2022-07-13 21:01:46,273 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:01:46,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-07-13 21:01:46,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b62dca90/1911dca23d8f43e3a1b691620f560ec8/FLAGc4764b7db [2022-07-13 21:01:46,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b62dca90/1911dca23d8f43e3a1b691620f560ec8 [2022-07-13 21:01:46,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:01:46,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:01:46,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:01:46,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:01:46,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:01:46,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:01:46" (1/1) ... [2022-07-13 21:01:46,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a37fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:46, skipping insertion in model container [2022-07-13 21:01:46,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:01:46" (1/1) ... [2022-07-13 21:01:46,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:01:46,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:01:46,950 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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c[20454,20467] [2022-07-13 21:01:46,975 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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c[22329,22342] [2022-07-13 21:01:47,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:01:47,748 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:01:47,791 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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c[20454,20467] [2022-07-13 21:01:47,794 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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c[22329,22342] [2022-07-13 21:01:48,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:01:48,202 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:01:48,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:48 WrapperNode [2022-07-13 21:01:48,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:01:48,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:01:48,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:01:48,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:01:48,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:48" (1/1) ... [2022-07-13 21:01:48,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:48" (1/1) ... [2022-07-13 21:01:48,595 INFO L137 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5208 [2022-07-13 21:01:48,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:01:48,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:01:48,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:01:48,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:01:48,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:48" (1/1) ... [2022-07-13 21:01:48,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:48" (1/1) ... [2022-07-13 21:01:48,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:48" (1/1) ... [2022-07-13 21:01:48,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:48" (1/1) ... [2022-07-13 21:01:48,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:48" (1/1) ... [2022-07-13 21:01:48,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:48" (1/1) ... [2022-07-13 21:01:48,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:48" (1/1) ... [2022-07-13 21:01:49,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:01:49,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:01:49,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:01:49,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:01:49,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:48" (1/1) ... [2022-07-13 21:01:49,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:01:49,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:01:49,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:01:49,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:01:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:01:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:01:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:01:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:01:49,405 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:01:49,407 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:01:52,877 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:01:52,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:01:52,896 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 21:01:52,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:01:52 BoogieIcfgContainer [2022-07-13 21:01:52,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:01:52,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:01:52,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:01:52,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:01:52,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:01:46" (1/3) ... [2022-07-13 21:01:52,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2f224b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:01:52, skipping insertion in model container [2022-07-13 21:01:52,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:01:48" (2/3) ... [2022-07-13 21:01:52,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2f224b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:01:52, skipping insertion in model container [2022-07-13 21:01:52,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:01:52" (3/3) ... [2022-07-13 21:01:52,907 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-07-13 21:01:52,921 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:01:52,921 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:01:52,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:01:53,004 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@15925135, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2fb4849d [2022-07-13 21:01:53,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:01:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:53,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 21:01:53,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:53,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:01:53,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:53,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:53,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1143645355, now seen corresponding path program 1 times [2022-07-13 21:01:53,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:53,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004785932] [2022-07-13 21:01:53,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:53,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:53,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:53,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004785932] [2022-07-13 21:01:53,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004785932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:53,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:53,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:01:53,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236429036] [2022-07-13 21:01:53,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:53,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:01:53,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:53,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:01:53,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:53,260 INFO L87 Difference]: Start difference. First operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 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 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:56,685 INFO L93 Difference]: Finished difference Result 2589 states and 4970 transitions. [2022-07-13 21:01:56,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:01:56,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-07-13 21:01:56,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:56,713 INFO L225 Difference]: With dead ends: 2589 [2022-07-13 21:01:56,713 INFO L226 Difference]: Without dead ends: 1631 [2022-07-13 21:01:56,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:01:56,724 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1099 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:01:56,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 375 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 21:01:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-07-13 21:01:56,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2022-07-13 21:01:56,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.8385512584407613) internal successors, (2995), 1630 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:56,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2995 transitions. [2022-07-13 21:01:56,815 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2995 transitions. Word has length 16 [2022-07-13 21:01:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:56,815 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2995 transitions. [2022-07-13 21:01:56,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:56,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2995 transitions. [2022-07-13 21:01:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 21:01:56,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:56,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:01:56,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:01:56,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:56,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:56,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1343709944, now seen corresponding path program 1 times [2022-07-13 21:01:56,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:56,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865322312] [2022-07-13 21:01:56,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:56,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:56,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:56,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865322312] [2022-07-13 21:01:56,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865322312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:56,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:56,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:01:56,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572186863] [2022-07-13 21:01:56,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:56,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:01:56,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:56,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:01:56,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:01:56,890 INFO L87 Difference]: Start difference. First operand 1631 states and 2995 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:56,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:01:56,976 INFO L93 Difference]: Finished difference Result 1705 states and 3110 transitions. [2022-07-13 21:01:56,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:01:56,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-07-13 21:01:56,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:01:56,984 INFO L225 Difference]: With dead ends: 1705 [2022-07-13 21:01:56,985 INFO L226 Difference]: Without dead ends: 1631 [2022-07-13 21:01:56,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:01:56,987 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 3 mSDsluCounter, 4909 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6563 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:01:56,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6563 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:01:56,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-07-13 21:01:57,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2022-07-13 21:01:57,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.8078575813382443) internal successors, (2945), 1630 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2945 transitions. [2022-07-13 21:01:57,028 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2945 transitions. Word has length 42 [2022-07-13 21:01:57,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:01:57,028 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2945 transitions. [2022-07-13 21:01:57,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:01:57,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2945 transitions. [2022-07-13 21:01:57,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-13 21:01:57,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:01:57,032 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 21:01:57,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:01:57,032 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:01:57,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:01:57,033 INFO L85 PathProgramCache]: Analyzing trace with hash -979059748, now seen corresponding path program 1 times [2022-07-13 21:01:57,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:01:57,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968754377] [2022-07-13 21:01:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:01:57,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:01:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:01:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:01:57,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:01:57,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968754377] [2022-07-13 21:01:57,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968754377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:01:57,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:01:57,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:01:57,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719380046] [2022-07-13 21:01:57,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:01:57,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:01:57,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:01:57,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:01:57,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:01:57,223 INFO L87 Difference]: Start difference. First operand 1631 states and 2945 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:02,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:02,459 INFO L93 Difference]: Finished difference Result 5388 states and 9835 transitions. [2022-07-13 21:02:02,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 21:02:02,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-07-13 21:02:02,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:02,476 INFO L225 Difference]: With dead ends: 5388 [2022-07-13 21:02:02,476 INFO L226 Difference]: Without dead ends: 3884 [2022-07-13 21:02:02,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:02:02,484 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 2504 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 6307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:02,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2504 Valid, 878 Invalid, 6307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-13 21:02:02,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2022-07-13 21:02:02,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3884. [2022-07-13 21:02:02,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3882 states have (on average 1.564657393096342) internal successors, (6074), 3883 states have internal predecessors, (6074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:02,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 6074 transitions. [2022-07-13 21:02:02,554 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 6074 transitions. Word has length 85 [2022-07-13 21:02:02,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:02,555 INFO L495 AbstractCegarLoop]: Abstraction has 3884 states and 6074 transitions. [2022-07-13 21:02:02,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:02,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 6074 transitions. [2022-07-13 21:02:02,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-13 21:02:02,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:02,561 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 21:02:02,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:02:02,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:02,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:02,563 INFO L85 PathProgramCache]: Analyzing trace with hash 40288385, now seen corresponding path program 1 times [2022-07-13 21:02:02,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:02,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100683464] [2022-07-13 21:02:02,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:02,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:02:02,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:02,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100683464] [2022-07-13 21:02:02,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100683464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:02,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:02,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:02:02,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947691099] [2022-07-13 21:02:02,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:02,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:02:02,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:02,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:02:02,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:02,699 INFO L87 Difference]: Start difference. First operand 3884 states and 6074 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:05,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:05,209 INFO L93 Difference]: Finished difference Result 10645 states and 17126 transitions. [2022-07-13 21:02:05,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:02:05,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-07-13 21:02:05,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:05,241 INFO L225 Difference]: With dead ends: 10645 [2022-07-13 21:02:05,242 INFO L226 Difference]: Without dead ends: 6888 [2022-07-13 21:02:05,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:05,251 INFO L413 NwaCegarLoop]: 1137 mSDtfsCounter, 775 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 3065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:05,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1312 Invalid, 3065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:02:05,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6888 states. [2022-07-13 21:02:05,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6888 to 6888. [2022-07-13 21:02:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6888 states, 6886 states have (on average 1.5326749927388905) internal successors, (10554), 6887 states have internal predecessors, (10554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6888 states to 6888 states and 10554 transitions. [2022-07-13 21:02:05,413 INFO L78 Accepts]: Start accepts. Automaton has 6888 states and 10554 transitions. Word has length 87 [2022-07-13 21:02:05,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:05,414 INFO L495 AbstractCegarLoop]: Abstraction has 6888 states and 10554 transitions. [2022-07-13 21:02:05,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:05,415 INFO L276 IsEmpty]: Start isEmpty. Operand 6888 states and 10554 transitions. [2022-07-13 21:02:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:02:05,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:05,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:05,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:02:05,417 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:05,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:05,417 INFO L85 PathProgramCache]: Analyzing trace with hash -461668761, now seen corresponding path program 1 times [2022-07-13 21:02:05,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:05,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821694701] [2022-07-13 21:02:05,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:05,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:05,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:02:05,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:05,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821694701] [2022-07-13 21:02:05,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821694701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:05,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:05,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:02:05,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615393440] [2022-07-13 21:02:05,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:05,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:02:05,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:05,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:02:05,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:05,516 INFO L87 Difference]: Start difference. First operand 6888 states and 10554 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:05,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:05,573 INFO L93 Difference]: Finished difference Result 7022 states and 10766 transitions. [2022-07-13 21:02:05,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:02:05,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-13 21:02:05,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:05,598 INFO L225 Difference]: With dead ends: 7022 [2022-07-13 21:02:05,598 INFO L226 Difference]: Without dead ends: 6952 [2022-07-13 21:02:05,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:05,603 INFO L413 NwaCegarLoop]: 1674 mSDtfsCounter, 1532 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:05,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 1791 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:02:05,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6952 states. [2022-07-13 21:02:05,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6952 to 6950. [2022-07-13 21:02:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6950 states, 6948 states have (on average 1.5332469775474957) internal successors, (10653), 6949 states have internal predecessors, (10653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:05,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6950 states to 6950 states and 10653 transitions. [2022-07-13 21:02:05,748 INFO L78 Accepts]: Start accepts. Automaton has 6950 states and 10653 transitions. Word has length 91 [2022-07-13 21:02:05,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:05,752 INFO L495 AbstractCegarLoop]: Abstraction has 6950 states and 10653 transitions. [2022-07-13 21:02:05,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:05,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6950 states and 10653 transitions. [2022-07-13 21:02:05,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:02:05,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:05,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:05,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:02:05,754 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:05,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1207251491, now seen corresponding path program 1 times [2022-07-13 21:02:05,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:05,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491577853] [2022-07-13 21:02:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:05,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:02:05,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:05,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491577853] [2022-07-13 21:02:05,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491577853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:05,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:05,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:02:05,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458576012] [2022-07-13 21:02:05,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:05,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:02:05,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:05,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:02:05,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:05,831 INFO L87 Difference]: Start difference. First operand 6950 states and 10653 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:05,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:05,884 INFO L93 Difference]: Finished difference Result 7202 states and 11053 transitions. [2022-07-13 21:02:05,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:02:05,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-13 21:02:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:05,912 INFO L225 Difference]: With dead ends: 7202 [2022-07-13 21:02:05,913 INFO L226 Difference]: Without dead ends: 7070 [2022-07-13 21:02:05,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:05,921 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1528 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:05,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1790 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:02:05,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7070 states. [2022-07-13 21:02:06,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7070 to 7068. [2022-07-13 21:02:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7066 states have (on average 1.5341069912255874) internal successors, (10840), 7067 states have internal predecessors, (10840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:06,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 10840 transitions. [2022-07-13 21:02:06,086 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 10840 transitions. Word has length 91 [2022-07-13 21:02:06,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:06,087 INFO L495 AbstractCegarLoop]: Abstraction has 7068 states and 10840 transitions. [2022-07-13 21:02:06,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:06,088 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 10840 transitions. [2022-07-13 21:02:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:02:06,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:06,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:06,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:02:06,090 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:06,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:06,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1147684947, now seen corresponding path program 1 times [2022-07-13 21:02:06,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:06,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329386647] [2022-07-13 21:02:06,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:06,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:02:06,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:06,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329386647] [2022-07-13 21:02:06,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329386647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:06,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:06,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:02:06,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928046253] [2022-07-13 21:02:06,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:06,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:02:06,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:06,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:02:06,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:06,155 INFO L87 Difference]: Start difference. First operand 7068 states and 10840 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:06,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:06,224 INFO L93 Difference]: Finished difference Result 7544 states and 11594 transitions. [2022-07-13 21:02:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:02:06,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-13 21:02:06,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:06,241 INFO L225 Difference]: With dead ends: 7544 [2022-07-13 21:02:06,241 INFO L226 Difference]: Without dead ends: 7294 [2022-07-13 21:02:06,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:06,250 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 1524 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:06,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:02:06,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7294 states. [2022-07-13 21:02:06,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7294 to 7292. [2022-07-13 21:02:06,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7292 states, 7290 states have (on average 1.5352537722908093) internal successors, (11192), 7291 states have internal predecessors, (11192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:06,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7292 states to 7292 states and 11192 transitions. [2022-07-13 21:02:06,392 INFO L78 Accepts]: Start accepts. Automaton has 7292 states and 11192 transitions. Word has length 91 [2022-07-13 21:02:06,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:06,392 INFO L495 AbstractCegarLoop]: Abstraction has 7292 states and 11192 transitions. [2022-07-13 21:02:06,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:06,393 INFO L276 IsEmpty]: Start isEmpty. Operand 7292 states and 11192 transitions. [2022-07-13 21:02:06,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:02:06,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:06,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:06,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:02:06,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:06,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:06,395 INFO L85 PathProgramCache]: Analyzing trace with hash -446599735, now seen corresponding path program 1 times [2022-07-13 21:02:06,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:06,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547734517] [2022-07-13 21:02:06,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:06,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:02:06,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:06,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547734517] [2022-07-13 21:02:06,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547734517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:06,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:06,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:02:06,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177452531] [2022-07-13 21:02:06,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:06,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:02:06,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:06,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:02:06,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:06,476 INFO L87 Difference]: Start difference. First operand 7292 states and 11192 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:06,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:06,547 INFO L93 Difference]: Finished difference Result 8192 states and 12610 transitions. [2022-07-13 21:02:06,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:02:06,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-13 21:02:06,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:06,561 INFO L225 Difference]: With dead ends: 8192 [2022-07-13 21:02:06,561 INFO L226 Difference]: Without dead ends: 7718 [2022-07-13 21:02:06,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:06,564 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 1520 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:06,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1788 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:02:06,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7718 states. [2022-07-13 21:02:06,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7718 to 7716. [2022-07-13 21:02:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7716 states, 7714 states have (on average 1.5364272750842625) internal successors, (11852), 7715 states have internal predecessors, (11852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7716 states to 7716 states and 11852 transitions. [2022-07-13 21:02:06,758 INFO L78 Accepts]: Start accepts. Automaton has 7716 states and 11852 transitions. Word has length 91 [2022-07-13 21:02:06,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:06,759 INFO L495 AbstractCegarLoop]: Abstraction has 7716 states and 11852 transitions. [2022-07-13 21:02:06,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:06,759 INFO L276 IsEmpty]: Start isEmpty. Operand 7716 states and 11852 transitions. [2022-07-13 21:02:06,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:02:06,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:06,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:06,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:02:06,761 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:06,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:06,762 INFO L85 PathProgramCache]: Analyzing trace with hash -108806593, now seen corresponding path program 1 times [2022-07-13 21:02:06,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:06,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993297467] [2022-07-13 21:02:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:06,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:02:06,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:06,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993297467] [2022-07-13 21:02:06,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993297467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:06,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:06,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:02:06,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473715633] [2022-07-13 21:02:06,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:06,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:02:06,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:06,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:02:06,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:06,817 INFO L87 Difference]: Start difference. First operand 7716 states and 11852 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:06,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:06,931 INFO L93 Difference]: Finished difference Result 9416 states and 14510 transitions. [2022-07-13 21:02:06,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:02:06,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-13 21:02:06,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:06,947 INFO L225 Difference]: With dead ends: 9416 [2022-07-13 21:02:06,947 INFO L226 Difference]: Without dead ends: 8518 [2022-07-13 21:02:06,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:06,954 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 1516 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:06,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1787 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:02:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8518 states. [2022-07-13 21:02:07,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8518 to 8516. [2022-07-13 21:02:07,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8516 states, 8514 states have (on average 1.5367629786234438) internal successors, (13084), 8515 states have internal predecessors, (13084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8516 states to 8516 states and 13084 transitions. [2022-07-13 21:02:07,115 INFO L78 Accepts]: Start accepts. Automaton has 8516 states and 13084 transitions. Word has length 91 [2022-07-13 21:02:07,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:07,116 INFO L495 AbstractCegarLoop]: Abstraction has 8516 states and 13084 transitions. [2022-07-13 21:02:07,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 8516 states and 13084 transitions. [2022-07-13 21:02:07,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:02:07,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:07,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:07,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:02:07,118 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:07,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:07,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1109178805, now seen corresponding path program 1 times [2022-07-13 21:02:07,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:07,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180699566] [2022-07-13 21:02:07,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:07,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:02:07,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:07,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180699566] [2022-07-13 21:02:07,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180699566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:07,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:07,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:02:07,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322191654] [2022-07-13 21:02:07,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:07,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:02:07,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:07,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:02:07,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:02:07,215 INFO L87 Difference]: Start difference. First operand 8516 states and 13084 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:08,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:08,578 INFO L93 Difference]: Finished difference Result 32288 states and 50058 transitions. [2022-07-13 21:02:08,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:02:08,579 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-07-13 21:02:08,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:08,634 INFO L225 Difference]: With dead ends: 32288 [2022-07-13 21:02:08,634 INFO L226 Difference]: Without dead ends: 30590 [2022-07-13 21:02:08,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-07-13 21:02:08,650 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 12616 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12616 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:08,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12616 Valid, 4108 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:02:08,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30590 states. [2022-07-13 21:02:09,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30590 to 10212. [2022-07-13 21:02:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10212 states, 10210 states have (on average 1.5337904015670911) internal successors, (15660), 10211 states have internal predecessors, (15660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10212 states to 10212 states and 15660 transitions. [2022-07-13 21:02:09,154 INFO L78 Accepts]: Start accepts. Automaton has 10212 states and 15660 transitions. Word has length 91 [2022-07-13 21:02:09,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:09,155 INFO L495 AbstractCegarLoop]: Abstraction has 10212 states and 15660 transitions. [2022-07-13 21:02:09,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:09,155 INFO L276 IsEmpty]: Start isEmpty. Operand 10212 states and 15660 transitions. [2022-07-13 21:02:09,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 21:02:09,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:09,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:09,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:02:09,157 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:09,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:09,157 INFO L85 PathProgramCache]: Analyzing trace with hash -646747483, now seen corresponding path program 1 times [2022-07-13 21:02:09,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:09,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147778928] [2022-07-13 21:02:09,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:09,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:02:09,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:09,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147778928] [2022-07-13 21:02:09,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147778928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:09,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:09,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:02:09,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681738804] [2022-07-13 21:02:09,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:09,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:02:09,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:09,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:02:09,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:09,202 INFO L87 Difference]: Start difference. First operand 10212 states and 15660 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:09,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:09,708 INFO L93 Difference]: Finished difference Result 16648 states and 25486 transitions. [2022-07-13 21:02:09,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:02:09,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-13 21:02:09,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:09,732 INFO L225 Difference]: With dead ends: 16648 [2022-07-13 21:02:09,732 INFO L226 Difference]: Without dead ends: 13254 [2022-07-13 21:02:09,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:09,742 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1507 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:09,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1706 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:02:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13254 states. [2022-07-13 21:02:10,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13254 to 13188. [2022-07-13 21:02:10,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13186 states have (on average 1.5200970726528136) internal successors, (20044), 13187 states have internal predecessors, (20044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 20044 transitions. [2022-07-13 21:02:10,394 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 20044 transitions. Word has length 93 [2022-07-13 21:02:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:10,394 INFO L495 AbstractCegarLoop]: Abstraction has 13188 states and 20044 transitions. [2022-07-13 21:02:10,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 20044 transitions. [2022-07-13 21:02:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 21:02:10,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:10,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:10,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:02:10,397 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:10,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:10,397 INFO L85 PathProgramCache]: Analyzing trace with hash -580253971, now seen corresponding path program 1 times [2022-07-13 21:02:10,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:10,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896484948] [2022-07-13 21:02:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:10,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:02:10,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:10,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896484948] [2022-07-13 21:02:10,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896484948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:10,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:10,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:02:10,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741893534] [2022-07-13 21:02:10,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:10,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:02:10,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:10,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:02:10,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:02:10,667 INFO L87 Difference]: Start difference. First operand 13188 states and 20044 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:11,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:11,568 INFO L93 Difference]: Finished difference Result 19560 states and 29646 transitions. [2022-07-13 21:02:11,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:02:11,569 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-13 21:02:11,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:11,589 INFO L225 Difference]: With dead ends: 19560 [2022-07-13 21:02:11,590 INFO L226 Difference]: Without dead ends: 13190 [2022-07-13 21:02:11,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:02:11,603 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 4941 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:11,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4941 Valid, 2301 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:02:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13190 states. [2022-07-13 21:02:12,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13190 to 13188. [2022-07-13 21:02:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13186 states have (on average 1.5152434400121342) internal successors, (19980), 13187 states have internal predecessors, (19980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 19980 transitions. [2022-07-13 21:02:12,265 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 19980 transitions. Word has length 93 [2022-07-13 21:02:12,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:12,266 INFO L495 AbstractCegarLoop]: Abstraction has 13188 states and 19980 transitions. [2022-07-13 21:02:12,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:12,266 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 19980 transitions. [2022-07-13 21:02:12,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 21:02:12,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:12,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:12,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:02:12,268 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:12,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:12,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1326262359, now seen corresponding path program 1 times [2022-07-13 21:02:12,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:12,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9382747] [2022-07-13 21:02:12,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:12,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:02:12,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:12,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9382747] [2022-07-13 21:02:12,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9382747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:12,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:12,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:02:12,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391530471] [2022-07-13 21:02:12,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:12,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:02:12,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:12,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:02:12,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:12,309 INFO L87 Difference]: Start difference. First operand 13188 states and 19980 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:13,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:13,284 INFO L93 Difference]: Finished difference Result 25160 states and 37774 transitions. [2022-07-13 21:02:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:02:13,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-13 21:02:13,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:13,306 INFO L225 Difference]: With dead ends: 25160 [2022-07-13 21:02:13,306 INFO L226 Difference]: Without dead ends: 18790 [2022-07-13 21:02:13,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:13,320 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 1536 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:13,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:02:13,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18790 states. [2022-07-13 21:02:14,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18790 to 18788. [2022-07-13 21:02:14,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18788 states, 18786 states have (on average 1.4962205898009155) internal successors, (28108), 18787 states have internal predecessors, (28108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18788 states to 18788 states and 28108 transitions. [2022-07-13 21:02:14,434 INFO L78 Accepts]: Start accepts. Automaton has 18788 states and 28108 transitions. Word has length 93 [2022-07-13 21:02:14,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:14,434 INFO L495 AbstractCegarLoop]: Abstraction has 18788 states and 28108 transitions. [2022-07-13 21:02:14,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand 18788 states and 28108 transitions. [2022-07-13 21:02:14,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-13 21:02:14,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:14,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:14,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:02:14,435 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:14,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:14,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1222726774, now seen corresponding path program 1 times [2022-07-13 21:02:14,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:14,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020750237] [2022-07-13 21:02:14,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:14,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:02:14,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:14,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020750237] [2022-07-13 21:02:14,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020750237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:14,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:14,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:02:14,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517465513] [2022-07-13 21:02:14,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:14,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:02:14,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:14,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:02:14,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:02:14,561 INFO L87 Difference]: Start difference. First operand 18788 states and 28108 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:16,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:16,352 INFO L93 Difference]: Finished difference Result 27658 states and 41020 transitions. [2022-07-13 21:02:16,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:02:16,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-07-13 21:02:16,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:16,385 INFO L225 Difference]: With dead ends: 27658 [2022-07-13 21:02:16,386 INFO L226 Difference]: Without dead ends: 27656 [2022-07-13 21:02:16,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:02:16,393 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 801 mSDsluCounter, 9281 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 10940 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:16,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 10940 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:02:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27656 states. [2022-07-13 21:02:17,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27656 to 19172. [2022-07-13 21:02:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19172 states, 19170 states have (on average 1.482942097026604) internal successors, (28428), 19171 states have internal predecessors, (28428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:17,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19172 states to 19172 states and 28428 transitions. [2022-07-13 21:02:17,524 INFO L78 Accepts]: Start accepts. Automaton has 19172 states and 28428 transitions. Word has length 94 [2022-07-13 21:02:17,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:17,524 INFO L495 AbstractCegarLoop]: Abstraction has 19172 states and 28428 transitions. [2022-07-13 21:02:17,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:17,525 INFO L276 IsEmpty]: Start isEmpty. Operand 19172 states and 28428 transitions. [2022-07-13 21:02:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 21:02:17,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:17,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:17,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:02:17,526 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:17,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:17,527 INFO L85 PathProgramCache]: Analyzing trace with hash -362720764, now seen corresponding path program 1 times [2022-07-13 21:02:17,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:17,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342616558] [2022-07-13 21:02:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:17,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:02:17,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:17,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342616558] [2022-07-13 21:02:17,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342616558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:17,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:17,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:02:17,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777962046] [2022-07-13 21:02:17,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:17,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:02:17,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:17,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:02:17,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:17,563 INFO L87 Difference]: Start difference. First operand 19172 states and 28428 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:19,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:19,235 INFO L93 Difference]: Finished difference Result 31723 states and 46866 transitions. [2022-07-13 21:02:19,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:02:19,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-07-13 21:02:19,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:19,271 INFO L225 Difference]: With dead ends: 31723 [2022-07-13 21:02:19,271 INFO L226 Difference]: Without dead ends: 24936 [2022-07-13 21:02:19,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:02:19,285 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 1537 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:19,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1805 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:02:19,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24936 states. [2022-07-13 21:02:20,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24936 to 24934. [2022-07-13 21:02:20,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24934 states, 24932 states have (on average 1.4714423231188833) internal successors, (36686), 24933 states have internal predecessors, (36686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:20,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24934 states to 24934 states and 36686 transitions. [2022-07-13 21:02:20,931 INFO L78 Accepts]: Start accepts. Automaton has 24934 states and 36686 transitions. Word has length 95 [2022-07-13 21:02:20,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:20,931 INFO L495 AbstractCegarLoop]: Abstraction has 24934 states and 36686 transitions. [2022-07-13 21:02:20,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:20,931 INFO L276 IsEmpty]: Start isEmpty. Operand 24934 states and 36686 transitions. [2022-07-13 21:02:20,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 21:02:20,942 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:20,942 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:20,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:02:20,943 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:20,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:20,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1202553482, now seen corresponding path program 1 times [2022-07-13 21:02:20,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:20,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592748187] [2022-07-13 21:02:20,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:20,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 21:02:21,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:21,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592748187] [2022-07-13 21:02:21,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592748187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:21,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:21,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:02:21,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076406476] [2022-07-13 21:02:21,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:21,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:02:21,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:21,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:02:21,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:02:21,044 INFO L87 Difference]: Start difference. First operand 24934 states and 36686 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:31,276 INFO L93 Difference]: Finished difference Result 155254 states and 225302 transitions. [2022-07-13 21:02:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:02:31,277 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 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 130 [2022-07-13 21:02:31,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:31,496 INFO L225 Difference]: With dead ends: 155254 [2022-07-13 21:02:31,496 INFO L226 Difference]: Without dead ends: 137140 [2022-07-13 21:02:31,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:02:31,539 INFO L413 NwaCegarLoop]: 1708 mSDtfsCounter, 10875 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10875 SdHoareTripleChecker+Valid, 4157 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:31,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10875 Valid, 4157 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:02:31,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137140 states. [2022-07-13 21:02:36,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137140 to 43046. [2022-07-13 21:02:36,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43046 states, 43044 states have (on average 1.4574388997305083) internal successors, (62734), 43045 states have internal predecessors, (62734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43046 states to 43046 states and 62734 transitions. [2022-07-13 21:02:36,454 INFO L78 Accepts]: Start accepts. Automaton has 43046 states and 62734 transitions. Word has length 130 [2022-07-13 21:02:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:36,455 INFO L495 AbstractCegarLoop]: Abstraction has 43046 states and 62734 transitions. [2022-07-13 21:02:36,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:36,455 INFO L276 IsEmpty]: Start isEmpty. Operand 43046 states and 62734 transitions. [2022-07-13 21:02:36,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 21:02:36,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:36,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:36,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:02:36,468 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:36,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:36,468 INFO L85 PathProgramCache]: Analyzing trace with hash -566229334, now seen corresponding path program 1 times [2022-07-13 21:02:36,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:36,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822065952] [2022-07-13 21:02:36,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:36,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:02:36,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:36,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822065952] [2022-07-13 21:02:36,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822065952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:36,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:36,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:02:36,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234792931] [2022-07-13 21:02:36,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:36,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:02:36,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:36,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:02:36,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:02:36,566 INFO L87 Difference]: Start difference. First operand 43046 states and 62734 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:50,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:02:50,343 INFO L93 Difference]: Finished difference Result 173366 states and 251350 transitions. [2022-07-13 21:02:50,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:02:50,344 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 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 130 [2022-07-13 21:02:50,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:02:50,724 INFO L225 Difference]: With dead ends: 173366 [2022-07-13 21:02:50,724 INFO L226 Difference]: Without dead ends: 155252 [2022-07-13 21:02:50,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:02:50,770 INFO L413 NwaCegarLoop]: 1710 mSDtfsCounter, 10608 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10608 SdHoareTripleChecker+Valid, 4240 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:02:50,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10608 Valid, 4240 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:02:50,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155252 states. [2022-07-13 21:02:57,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155252 to 70246. [2022-07-13 21:02:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70246 states, 70244 states have (on average 1.4470417402198053) internal successors, (101646), 70245 states have internal predecessors, (101646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70246 states to 70246 states and 101646 transitions. [2022-07-13 21:02:57,931 INFO L78 Accepts]: Start accepts. Automaton has 70246 states and 101646 transitions. Word has length 130 [2022-07-13 21:02:57,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:02:57,932 INFO L495 AbstractCegarLoop]: Abstraction has 70246 states and 101646 transitions. [2022-07-13 21:02:57,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:02:57,932 INFO L276 IsEmpty]: Start isEmpty. Operand 70246 states and 101646 transitions. [2022-07-13 21:02:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 21:02:57,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:02:57,943 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:02:57,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:02:57,943 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:02:57,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:02:57,944 INFO L85 PathProgramCache]: Analyzing trace with hash 565410506, now seen corresponding path program 1 times [2022-07-13 21:02:57,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:02:57,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878339969] [2022-07-13 21:02:57,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:02:57,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:02:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:02:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 21:02:58,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:02:58,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878339969] [2022-07-13 21:02:58,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878339969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:02:58,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:02:58,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:02:58,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386473903] [2022-07-13 21:02:58,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:02:58,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:02:58,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:02:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:02:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:02:58,195 INFO L87 Difference]: Start difference. First operand 70246 states and 101646 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)