./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.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 96b7f8eccd086f0147c8c722a1929f411803fa8c06f9cbde3c608e38cc4fa9b2 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:48:50,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:48:50,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:48:50,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:48:50,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:48:50,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:48:50,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:48:50,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:48:50,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:48:50,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:48:50,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:48:50,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:48:50,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:48:50,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:48:50,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:48:50,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:48:50,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:48:50,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:48:50,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:48:50,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:48:50,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:48:50,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:48:50,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:48:50,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:48:50,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:48:50,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:48:50,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:48:50,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:48:50,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:48:50,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:48:50,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:48:50,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:48:50,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:48:50,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:48:50,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:48:50,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:48:50,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:48:50,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:48:50,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:48:50,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:48:50,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:48:50,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:48:50,234 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:48:50,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:48:50,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:48:50,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:48:50,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:48:50,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:48:50,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:48:50,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:48:50,236 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:48:50,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:48:50,237 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:48:50,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:48:50,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:48:50,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:48:50,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:48:50,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:48:50,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:48:50,239 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:48:50,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:48:50,239 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:48:50,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:48:50,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:48:50,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:48:50,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:48:50,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:48:50,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:48:50,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:48:50,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:48:50,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:48:50,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:48:50,242 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:48:50,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:48:50,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:48:50,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:48:50,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96b7f8eccd086f0147c8c722a1929f411803fa8c06f9cbde3c608e38cc4fa9b2 [2021-12-14 15:48:50,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:48:50,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:48:50,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:48:50,483 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:48:50,483 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:48:50,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c [2021-12-14 15:48:50,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0381cd48/d59ff1b2680c4a199f15b28e5cf50b4e/FLAG31282c7ce [2021-12-14 15:48:51,188 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:48:51,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c [2021-12-14 15:48:51,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0381cd48/d59ff1b2680c4a199f15b28e5cf50b4e/FLAG31282c7ce [2021-12-14 15:48:51,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0381cd48/d59ff1b2680c4a199f15b28e5cf50b4e [2021-12-14 15:48:51,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:48:51,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:48:51,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:48:51,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:48:51,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:48:51,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:48:51" (1/1) ... [2021-12-14 15:48:51,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c483b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:51, skipping insertion in model container [2021-12-14 15:48:51,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:48:51" (1/1) ... [2021-12-14 15:48:51,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:48:51,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:48:52,614 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/Problem05_label48+token_ring.11.cil-2.c[375709,375722] [2021-12-14 15:48:52,641 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/Problem05_label48+token_ring.11.cil-2.c[383339,383352] [2021-12-14 15:48:52,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:48:52,870 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:48:53,436 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/Problem05_label48+token_ring.11.cil-2.c[375709,375722] [2021-12-14 15:48:53,479 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/Problem05_label48+token_ring.11.cil-2.c[383339,383352] [2021-12-14 15:48:53,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:48:53,549 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:48:53,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:53 WrapperNode [2021-12-14 15:48:53,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:48:53,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:48:53,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:48:53,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:48:53,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:53" (1/1) ... [2021-12-14 15:48:53,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:53" (1/1) ... [2021-12-14 15:48:54,002 INFO L137 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13141 [2021-12-14 15:48:54,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:48:54,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:48:54,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:48:54,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:48:54,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:53" (1/1) ... [2021-12-14 15:48:54,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:53" (1/1) ... [2021-12-14 15:48:54,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:53" (1/1) ... [2021-12-14 15:48:54,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:53" (1/1) ... [2021-12-14 15:48:54,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:53" (1/1) ... [2021-12-14 15:48:54,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:53" (1/1) ... [2021-12-14 15:48:54,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:53" (1/1) ... [2021-12-14 15:48:54,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:48:54,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:48:54,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:48:54,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:48:54,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:53" (1/1) ... [2021-12-14 15:48:54,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:48:54,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:48:54,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:48:54,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:48:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:48:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:48:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:48:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:48:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:48:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:48:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:48:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:48:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:48:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:48:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:48:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:48:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:48:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:48:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:48:54,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:48:54,610 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:48:54,612 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:48:59,729 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:48:59,759 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:48:59,760 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-12-14 15:48:59,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:48:59 BoogieIcfgContainer [2021-12-14 15:48:59,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:48:59,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:48:59,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:48:59,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:48:59,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:48:51" (1/3) ... [2021-12-14 15:48:59,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1151d772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:48:59, skipping insertion in model container [2021-12-14 15:48:59,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:53" (2/3) ... [2021-12-14 15:48:59,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1151d772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:48:59, skipping insertion in model container [2021-12-14 15:48:59,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:48:59" (3/3) ... [2021-12-14 15:48:59,772 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.11.cil-2.c [2021-12-14 15:48:59,776 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:48:59,777 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:48:59,823 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:48:59,829 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:48:59,829 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:48:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 15:48:59,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:48:59,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:59,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:48:59,890 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:59,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:59,894 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2021-12-14 15:48:59,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:59,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270838105] [2021-12-14 15:48:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:59,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:00,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:00,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:49:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:00,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:49:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:00,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:49:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:49:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:00,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:00,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270838105] [2021-12-14 15:49:00,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270838105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:00,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:00,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:49:00,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017361197] [2021-12-14 15:49:00,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:00,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:49:00,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:00,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:49:00,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:49:00,378 INFO L87 Difference]: Start difference. First operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:01,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:01,629 INFO L93 Difference]: Finished difference Result 5199 states and 9547 transitions. [2021-12-14 15:49:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:49:01,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:49:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:01,655 INFO L225 Difference]: With dead ends: 5199 [2021-12-14 15:49:01,655 INFO L226 Difference]: Without dead ends: 2604 [2021-12-14 15:49:01,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:49:01,669 INFO L933 BasicCegarLoop]: 4637 mSDtfsCounter, 953 mSDsluCounter, 12458 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 17095 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:01,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 17095 Invalid, 709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 15:49:01,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2021-12-14 15:49:01,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2473. [2021-12-14 15:49:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2440 states have (on average 1.82827868852459) internal successors, (4461), 2442 states have internal predecessors, (4461), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 15:49:01,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4511 transitions. [2021-12-14 15:49:01,809 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4511 transitions. Word has length 167 [2021-12-14 15:49:01,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:01,810 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 4511 transitions. [2021-12-14 15:49:01,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:01,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4511 transitions. [2021-12-14 15:49:01,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:49:01,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:01,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:01,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:49:01,821 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:01,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:01,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1911892782, now seen corresponding path program 1 times [2021-12-14 15:49:01,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:01,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385884332] [2021-12-14 15:49:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:01,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:01,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:01,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:49:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:02,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:49:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:02,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:49:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:02,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:49:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:02,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:02,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385884332] [2021-12-14 15:49:02,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385884332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:02,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:02,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:49:02,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049365195] [2021-12-14 15:49:02,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:02,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:49:02,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:49:02,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:49:02,125 INFO L87 Difference]: Start difference. First operand 2473 states and 4511 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:04,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:04,528 INFO L93 Difference]: Finished difference Result 3417 states and 6038 transitions. [2021-12-14 15:49:04,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:49:04,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:49:04,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:04,544 INFO L225 Difference]: With dead ends: 3417 [2021-12-14 15:49:04,544 INFO L226 Difference]: Without dead ends: 3084 [2021-12-14 15:49:04,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:49:04,548 INFO L933 BasicCegarLoop]: 4616 mSDtfsCounter, 5395 mSDsluCounter, 12814 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 17430 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:04,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5413 Valid, 17430 Invalid, 1922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 1810 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:49:04,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2021-12-14 15:49:04,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2823. [2021-12-14 15:49:04,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8009410061527324) internal successors, (4976), 2766 states have internal predecessors, (4976), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2021-12-14 15:49:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5069 transitions. [2021-12-14 15:49:04,638 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5069 transitions. Word has length 167 [2021-12-14 15:49:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:04,639 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5069 transitions. [2021-12-14 15:49:04,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:04,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5069 transitions. [2021-12-14 15:49:04,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:49:04,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:04,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:04,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:49:04,641 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:04,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash -912306602, now seen corresponding path program 1 times [2021-12-14 15:49:04,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:04,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858408231] [2021-12-14 15:49:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:04,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:04,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:49:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:04,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:49:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:04,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:49:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:04,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:49:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:04,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:04,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858408231] [2021-12-14 15:49:04,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858408231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:04,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:04,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:04,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294732586] [2021-12-14 15:49:04,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:04,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:04,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:04,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:04,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:04,775 INFO L87 Difference]: Start difference. First operand 2823 states and 5069 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:06,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:06,249 INFO L93 Difference]: Finished difference Result 3787 states and 6636 transitions. [2021-12-14 15:49:06,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:49:06,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:49:06,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:06,260 INFO L225 Difference]: With dead ends: 3787 [2021-12-14 15:49:06,260 INFO L226 Difference]: Without dead ends: 3104 [2021-12-14 15:49:06,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:49:06,263 INFO L933 BasicCegarLoop]: 4563 mSDtfsCounter, 4992 mSDsluCounter, 16701 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5011 SdHoareTripleChecker+Valid, 21264 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:06,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5011 Valid, 21264 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:49:06,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-12-14 15:49:06,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2823. [2021-12-14 15:49:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8002171552660151) internal successors, (4974), 2766 states have internal predecessors, (4974), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2021-12-14 15:49:06,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5067 transitions. [2021-12-14 15:49:06,329 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5067 transitions. Word has length 167 [2021-12-14 15:49:06,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:06,329 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5067 transitions. [2021-12-14 15:49:06,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:06,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5067 transitions. [2021-12-14 15:49:06,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:49:06,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:06,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:06,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:49:06,332 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:06,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:06,332 INFO L85 PathProgramCache]: Analyzing trace with hash -574019052, now seen corresponding path program 1 times [2021-12-14 15:49:06,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:06,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230104932] [2021-12-14 15:49:06,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:06,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:06,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:49:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:06,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:49:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:49:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:06,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:49:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:06,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:06,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230104932] [2021-12-14 15:49:06,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230104932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:06,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:06,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:06,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078324735] [2021-12-14 15:49:06,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:06,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:06,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:06,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:06,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:06,462 INFO L87 Difference]: Start difference. First operand 2823 states and 5067 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:09,129 INFO L93 Difference]: Finished difference Result 4261 states and 7389 transitions. [2021-12-14 15:49:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:49:09,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:49:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:09,149 INFO L225 Difference]: With dead ends: 4261 [2021-12-14 15:49:09,149 INFO L226 Difference]: Without dead ends: 3578 [2021-12-14 15:49:09,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:49:09,155 INFO L933 BasicCegarLoop]: 4889 mSDtfsCounter, 5411 mSDsluCounter, 17640 mSDsCounter, 0 mSdLazyCounter, 2829 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5429 SdHoareTripleChecker+Valid, 22529 SdHoareTripleChecker+Invalid, 2902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:09,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5429 Valid, 22529 Invalid, 2902 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 2829 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 15:49:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2021-12-14 15:49:09,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 3148. [2021-12-14 15:49:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3061 states have (on average 1.7765436131983012) internal successors, (5438), 3065 states have internal predecessors, (5438), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2021-12-14 15:49:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5573 transitions. [2021-12-14 15:49:09,268 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5573 transitions. Word has length 167 [2021-12-14 15:49:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:09,268 INFO L470 AbstractCegarLoop]: Abstraction has 3148 states and 5573 transitions. [2021-12-14 15:49:09,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5573 transitions. [2021-12-14 15:49:09,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:49:09,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:09,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:09,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:49:09,270 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:09,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:09,270 INFO L85 PathProgramCache]: Analyzing trace with hash -147464554, now seen corresponding path program 1 times [2021-12-14 15:49:09,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:09,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888112939] [2021-12-14 15:49:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:09,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:09,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:09,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:49:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:09,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:49:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:49:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:49:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:09,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:09,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888112939] [2021-12-14 15:49:09,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888112939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:09,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:09,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:09,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640662625] [2021-12-14 15:49:09,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:09,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:09,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:09,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:09,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:09,417 INFO L87 Difference]: Start difference. First operand 3148 states and 5573 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:12,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:12,083 INFO L93 Difference]: Finished difference Result 5508 states and 9375 transitions. [2021-12-14 15:49:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:49:12,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:49:12,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:12,102 INFO L225 Difference]: With dead ends: 5508 [2021-12-14 15:49:12,102 INFO L226 Difference]: Without dead ends: 4500 [2021-12-14 15:49:12,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:49:12,109 INFO L933 BasicCegarLoop]: 4881 mSDtfsCounter, 5408 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5426 SdHoareTripleChecker+Valid, 22517 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:12,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5426 Valid, 22517 Invalid, 2903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:49:12,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2021-12-14 15:49:12,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 3800. [2021-12-14 15:49:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 3659 states have (on average 1.7406395189942607) internal successors, (6369), 3665 states have internal predecessors, (6369), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2021-12-14 15:49:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 6592 transitions. [2021-12-14 15:49:12,224 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 6592 transitions. Word has length 167 [2021-12-14 15:49:12,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:12,224 INFO L470 AbstractCegarLoop]: Abstraction has 3800 states and 6592 transitions. [2021-12-14 15:49:12,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:12,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 6592 transitions. [2021-12-14 15:49:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:49:12,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:12,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:12,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:49:12,227 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:12,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:12,227 INFO L85 PathProgramCache]: Analyzing trace with hash -687894060, now seen corresponding path program 1 times [2021-12-14 15:49:12,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:12,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889557440] [2021-12-14 15:49:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:12,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:12,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:12,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:49:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:12,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:49:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:12,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:49:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:12,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:49:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:12,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:12,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889557440] [2021-12-14 15:49:12,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889557440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:12,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:12,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:12,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763015544] [2021-12-14 15:49:12,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:12,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:12,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:12,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:12,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:12,354 INFO L87 Difference]: Start difference. First operand 3800 states and 6592 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:15,131 INFO L93 Difference]: Finished difference Result 7910 states and 13178 transitions. [2021-12-14 15:49:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:49:15,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:49:15,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:15,153 INFO L225 Difference]: With dead ends: 7910 [2021-12-14 15:49:15,153 INFO L226 Difference]: Without dead ends: 6250 [2021-12-14 15:49:15,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:49:15,160 INFO L933 BasicCegarLoop]: 4877 mSDtfsCounter, 5404 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2822 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5422 SdHoareTripleChecker+Valid, 22513 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:15,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5422 Valid, 22513 Invalid, 2898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2822 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 15:49:15,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2021-12-14 15:49:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 5106. [2021-12-14 15:49:15,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5106 states, 4857 states have (on average 1.6950792670372659) internal successors, (8233), 4867 states have internal predecessors, (8233), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-12-14 15:49:15,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 8638 transitions. [2021-12-14 15:49:15,341 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 8638 transitions. Word has length 167 [2021-12-14 15:49:15,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:15,342 INFO L470 AbstractCegarLoop]: Abstraction has 5106 states and 8638 transitions. [2021-12-14 15:49:15,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:15,342 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 8638 transitions. [2021-12-14 15:49:15,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:49:15,345 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:15,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:15,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:49:15,345 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:15,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:15,346 INFO L85 PathProgramCache]: Analyzing trace with hash -843874602, now seen corresponding path program 1 times [2021-12-14 15:49:15,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:15,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666570810] [2021-12-14 15:49:15,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:15,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:15,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:15,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:49:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:49:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:15,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:49:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:15,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:49:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:15,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:15,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666570810] [2021-12-14 15:49:15,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666570810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:15,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:15,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:15,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105821981] [2021-12-14 15:49:15,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:15,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:15,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:15,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:15,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:15,478 INFO L87 Difference]: Start difference. First operand 5106 states and 8638 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:16,816 INFO L93 Difference]: Finished difference Result 9244 states and 15305 transitions. [2021-12-14 15:49:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:49:16,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:49:16,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:16,836 INFO L225 Difference]: With dead ends: 9244 [2021-12-14 15:49:16,836 INFO L226 Difference]: Without dead ends: 6278 [2021-12-14 15:49:16,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:49:16,847 INFO L933 BasicCegarLoop]: 4546 mSDtfsCounter, 5150 mSDsluCounter, 12561 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5169 SdHoareTripleChecker+Valid, 17107 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:16,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5169 Valid, 17107 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 15:49:16,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6278 states. [2021-12-14 15:49:17,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6278 to 5106. [2021-12-14 15:49:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5106 states, 4857 states have (on average 1.6932262713609223) internal successors, (8224), 4867 states have internal predecessors, (8224), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-12-14 15:49:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 8629 transitions. [2021-12-14 15:49:17,021 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 8629 transitions. Word has length 167 [2021-12-14 15:49:17,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:17,021 INFO L470 AbstractCegarLoop]: Abstraction has 5106 states and 8629 transitions. [2021-12-14 15:49:17,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:17,021 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 8629 transitions. [2021-12-14 15:49:17,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:49:17,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:17,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:17,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:49:17,024 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:17,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash -433264236, now seen corresponding path program 1 times [2021-12-14 15:49:17,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:17,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359917686] [2021-12-14 15:49:17,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:17,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:17,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:49:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:49:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:17,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:49:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:17,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:49:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:17,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:17,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359917686] [2021-12-14 15:49:17,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359917686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:17,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:17,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:17,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118505506] [2021-12-14 15:49:17,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:17,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:17,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:17,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:17,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:17,141 INFO L87 Difference]: Start difference. First operand 5106 states and 8629 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:18,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:18,510 INFO L93 Difference]: Finished difference Result 9224 states and 15239 transitions. [2021-12-14 15:49:18,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:49:18,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:49:18,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:18,525 INFO L225 Difference]: With dead ends: 9224 [2021-12-14 15:49:18,525 INFO L226 Difference]: Without dead ends: 6258 [2021-12-14 15:49:18,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:49:18,534 INFO L933 BasicCegarLoop]: 4540 mSDtfsCounter, 5146 mSDsluCounter, 12561 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5165 SdHoareTripleChecker+Valid, 17101 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:18,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5165 Valid, 17101 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 15:49:18,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2021-12-14 15:49:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 5106. [2021-12-14 15:49:18,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5106 states, 4857 states have (on average 1.691373275684579) internal successors, (8215), 4867 states have internal predecessors, (8215), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-12-14 15:49:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 8620 transitions. [2021-12-14 15:49:18,682 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 8620 transitions. Word has length 167 [2021-12-14 15:49:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:18,683 INFO L470 AbstractCegarLoop]: Abstraction has 5106 states and 8620 transitions. [2021-12-14 15:49:18,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:18,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 8620 transitions. [2021-12-14 15:49:18,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:49:18,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:18,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:18,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:49:18,686 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:18,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1725819858, now seen corresponding path program 1 times [2021-12-14 15:49:18,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:18,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547826996] [2021-12-14 15:49:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:18,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:18,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:49:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:18,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:49:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:18,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:49:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:18,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:49:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:18,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:18,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547826996] [2021-12-14 15:49:18,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547826996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:18,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:18,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:18,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747255603] [2021-12-14 15:49:18,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:18,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:18,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:18,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:18,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:18,848 INFO L87 Difference]: Start difference. First operand 5106 states and 8620 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:21,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:21,676 INFO L93 Difference]: Finished difference Result 12684 states and 20658 transitions. [2021-12-14 15:49:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:49:21,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:49:21,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:21,701 INFO L225 Difference]: With dead ends: 12684 [2021-12-14 15:49:21,701 INFO L226 Difference]: Without dead ends: 9718 [2021-12-14 15:49:21,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:49:21,710 INFO L933 BasicCegarLoop]: 4855 mSDtfsCounter, 5387 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5405 SdHoareTripleChecker+Valid, 22491 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:21,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5405 Valid, 22491 Invalid, 2842 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:49:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9718 states. [2021-12-14 15:49:22,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9718 to 7750. [2021-12-14 15:49:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7750 states, 7285 states have (on average 1.6433768016472203) internal successors, (11972), 7303 states have internal predecessors, (11972), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2021-12-14 15:49:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7750 states to 7750 states and 12759 transitions. [2021-12-14 15:49:22,060 INFO L78 Accepts]: Start accepts. Automaton has 7750 states and 12759 transitions. Word has length 167 [2021-12-14 15:49:22,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:22,060 INFO L470 AbstractCegarLoop]: Abstraction has 7750 states and 12759 transitions. [2021-12-14 15:49:22,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:22,061 INFO L276 IsEmpty]: Start isEmpty. Operand 7750 states and 12759 transitions. [2021-12-14 15:49:22,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:49:22,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:22,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:22,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:49:22,068 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:22,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:22,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1795467732, now seen corresponding path program 1 times [2021-12-14 15:49:22,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:22,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167400541] [2021-12-14 15:49:22,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:22,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:22,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:22,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:49:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:22,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:49:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:22,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:49:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:22,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:49:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:22,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:22,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167400541] [2021-12-14 15:49:22,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167400541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:22,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:22,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:22,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235703730] [2021-12-14 15:49:22,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:22,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:22,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:22,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:22,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:22,228 INFO L87 Difference]: Start difference. First operand 7750 states and 12759 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:25,217 INFO L93 Difference]: Finished difference Result 22294 states and 35877 transitions. [2021-12-14 15:49:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:49:25,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:49:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:25,262 INFO L225 Difference]: With dead ends: 22294 [2021-12-14 15:49:25,262 INFO L226 Difference]: Without dead ends: 16684 [2021-12-14 15:49:25,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:49:25,280 INFO L933 BasicCegarLoop]: 4850 mSDtfsCounter, 5386 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5404 SdHoareTripleChecker+Valid, 22486 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:25,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5404 Valid, 22486 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2754 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 15:49:25,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16684 states. [2021-12-14 15:49:25,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16684 to 13047. [2021-12-14 15:49:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13047 states, 12150 states have (on average 1.6046090534979425) internal successors, (19496), 12184 states have internal predecessors, (19496), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2021-12-14 15:49:25,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13047 states to 13047 states and 21101 transitions. [2021-12-14 15:49:25,812 INFO L78 Accepts]: Start accepts. Automaton has 13047 states and 21101 transitions. Word has length 167 [2021-12-14 15:49:25,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:25,812 INFO L470 AbstractCegarLoop]: Abstraction has 13047 states and 21101 transitions. [2021-12-14 15:49:25,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:25,812 INFO L276 IsEmpty]: Start isEmpty. Operand 13047 states and 21101 transitions. [2021-12-14 15:49:25,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:49:25,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:25,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:25,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:49:25,820 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:25,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:25,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2081610862, now seen corresponding path program 1 times [2021-12-14 15:49:25,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:25,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554746753] [2021-12-14 15:49:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:25,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:25,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:25,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:49:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:25,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:49:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:25,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:49:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:25,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:49:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:25,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:25,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554746753] [2021-12-14 15:49:25,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554746753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:25,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:25,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:25,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727379229] [2021-12-14 15:49:25,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:25,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:25,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:25,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:25,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:25,940 INFO L87 Difference]: Start difference. First operand 13047 states and 21101 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:29,988 INFO L93 Difference]: Finished difference Result 41509 states and 66497 transitions. [2021-12-14 15:49:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:49:29,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:49:29,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:30,091 INFO L225 Difference]: With dead ends: 41509 [2021-12-14 15:49:30,091 INFO L226 Difference]: Without dead ends: 30602 [2021-12-14 15:49:30,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:49:30,127 INFO L933 BasicCegarLoop]: 4845 mSDtfsCounter, 5385 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5403 SdHoareTripleChecker+Valid, 22481 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:30,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5403 Valid, 22481 Invalid, 2826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2746 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 15:49:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30602 states. [2021-12-14 15:49:31,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30602 to 23672. [2021-12-14 15:49:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23672 states, 21911 states have (on average 1.5786591209894574) internal successors, (34590), 21977 states have internal predecessors, (34590), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2021-12-14 15:49:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23672 states to 23672 states and 37993 transitions. [2021-12-14 15:49:31,397 INFO L78 Accepts]: Start accepts. Automaton has 23672 states and 37993 transitions. Word has length 167 [2021-12-14 15:49:31,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:31,397 INFO L470 AbstractCegarLoop]: Abstraction has 23672 states and 37993 transitions. [2021-12-14 15:49:31,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 23672 states and 37993 transitions. [2021-12-14 15:49:31,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:49:31,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:31,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:31,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:49:31,409 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:31,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:31,409 INFO L85 PathProgramCache]: Analyzing trace with hash -682657260, now seen corresponding path program 1 times [2021-12-14 15:49:31,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:31,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809590885] [2021-12-14 15:49:31,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:31,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:31,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:31,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:49:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:31,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:49:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:31,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:49:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:49:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:31,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:31,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809590885] [2021-12-14 15:49:31,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809590885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:31,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:31,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:31,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290977845] [2021-12-14 15:49:31,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:31,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:31,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:31,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:31,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:31,521 INFO L87 Difference]: Start difference. First operand 23672 states and 37993 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:36,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:36,989 INFO L93 Difference]: Finished difference Result 79940 states and 128339 transitions. [2021-12-14 15:49:36,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:49:36,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-14 15:49:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:37,171 INFO L225 Difference]: With dead ends: 79940 [2021-12-14 15:49:37,172 INFO L226 Difference]: Without dead ends: 58408 [2021-12-14 15:49:37,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:49:37,224 INFO L933 BasicCegarLoop]: 4840 mSDtfsCounter, 5384 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5402 SdHoareTripleChecker+Valid, 22476 SdHoareTripleChecker+Invalid, 2818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:37,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5402 Valid, 22476 Invalid, 2818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2738 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 15:49:37,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58408 states. [2021-12-14 15:49:39,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58408 to 44985. [2021-12-14 15:49:39,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44985 states, 41496 states have (on average 1.5633314054366685) internal successors, (64872), 41626 states have internal predecessors, (64872), 2585 states have call successors, (2585), 774 states have call predecessors, (2585), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2021-12-14 15:49:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44985 states to 44985 states and 72357 transitions. [2021-12-14 15:49:39,838 INFO L78 Accepts]: Start accepts. Automaton has 44985 states and 72357 transitions. Word has length 167 [2021-12-14 15:49:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:39,838 INFO L470 AbstractCegarLoop]: Abstraction has 44985 states and 72357 transitions. [2021-12-14 15:49:39,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:39,838 INFO L276 IsEmpty]: Start isEmpty. Operand 44985 states and 72357 transitions. [2021-12-14 15:49:39,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 15:49:39,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:39,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:39,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:49:39,859 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:39,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:39,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1994869586, now seen corresponding path program 1 times [2021-12-14 15:49:39,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:39,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5744279] [2021-12-14 15:49:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:39,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:39,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:49:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:49:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:39,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:49:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:39,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:49:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:39,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:39,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:39,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5744279] [2021-12-14 15:49:39,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5744279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:39,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:39,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:39,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538481042] [2021-12-14 15:49:39,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:39,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:39,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:39,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:39,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:39,961 INFO L87 Difference]: Start difference. First operand 44985 states and 72357 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)