./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_label44+token_ring.10.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 3bd63f2e85879a3b5cd3d111848f55574da866e1b794c0e510a03ddd791b817a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:14:57,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:14:57,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:14:57,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:14:57,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:14:57,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:14:57,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:14:57,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:14:57,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:14:57,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:14:57,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:14:57,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:14:57,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:14:57,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:14:57,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:14:57,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:14:57,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:14:57,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:14:57,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:14:57,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:14:57,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:14:57,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:14:57,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:14:57,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:14:57,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:14:57,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:14:57,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:14:57,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:14:57,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:14:57,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:14:57,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:14:57,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:14:57,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:14:57,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:14:57,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:14:57,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:14:57,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:14:57,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:14:57,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:14:57,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:14:57,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:14:57,247 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:14:57,262 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:14:57,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:14:57,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:14:57,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:14:57,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:14:57,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:14:57,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:14:57,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:14:57,265 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:14:57,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:14:57,266 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:14:57,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:14:57,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:14:57,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:14:57,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:14:57,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:14:57,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:14:57,268 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:14:57,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:14:57,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:14:57,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:14:57,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:14:57,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:14:57,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:14:57,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:14:57,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:14:57,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:14:57,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:14:57,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:14:57,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:14:57,270 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:14:57,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:14:57,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:14:57,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:14:57,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bd63f2e85879a3b5cd3d111848f55574da866e1b794c0e510a03ddd791b817a [2021-12-21 14:14:57,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:14:57,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:14:57,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:14:57,464 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:14:57,465 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:14:57,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.10.cil-2.c [2021-12-21 14:14:57,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14295c6c/582d5c34237f414cac3353e209e4a7ab/FLAG0dbaf8a2d [2021-12-21 14:14:58,194 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:14:58,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.10.cil-2.c [2021-12-21 14:14:58,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14295c6c/582d5c34237f414cac3353e209e4a7ab/FLAG0dbaf8a2d [2021-12-21 14:14:58,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14295c6c/582d5c34237f414cac3353e209e4a7ab [2021-12-21 14:14:58,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:14:58,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:14:58,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:14:58,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:14:58,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:14:58,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:14:58" (1/1) ... [2021-12-21 14:14:58,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66de3db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:58, skipping insertion in model container [2021-12-21 14:14:58,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:14:58" (1/1) ... [2021-12-21 14:14:58,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:14:58,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:14:59,554 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_label44+token_ring.10.cil-2.c[377340,377353] [2021-12-21 14:14:59,576 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_label44+token_ring.10.cil-2.c[383339,383352] [2021-12-21 14:14:59,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:14:59,767 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:15:00,333 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_label44+token_ring.10.cil-2.c[377340,377353] [2021-12-21 14:15:00,338 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_label44+token_ring.10.cil-2.c[383339,383352] [2021-12-21 14:15:00,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:15:00,387 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:15:00,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:00 WrapperNode [2021-12-21 14:15:00,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:15:00,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:15:00,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:15:00,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:15:00,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:00" (1/1) ... [2021-12-21 14:15:00,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:00" (1/1) ... [2021-12-21 14:15:00,769 INFO L137 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13083 [2021-12-21 14:15:00,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:15:00,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:15:00,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:15:00,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:15:00,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:00" (1/1) ... [2021-12-21 14:15:00,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:00" (1/1) ... [2021-12-21 14:15:00,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:00" (1/1) ... [2021-12-21 14:15:00,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:00" (1/1) ... [2021-12-21 14:15:01,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:00" (1/1) ... [2021-12-21 14:15:01,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:00" (1/1) ... [2021-12-21 14:15:01,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:00" (1/1) ... [2021-12-21 14:15:01,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:15:01,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:15:01,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:15:01,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:15:01,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:00" (1/1) ... [2021-12-21 14:15:01,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:15:01,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:15:01,229 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) [2021-12-21 14:15:01,270 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 [2021-12-21 14:15:01,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:15:01,291 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 14:15:01,291 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 14:15:01,291 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 14:15:01,291 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 14:15:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 14:15:01,292 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 14:15:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 14:15:01,292 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 14:15:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 14:15:01,292 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 14:15:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 14:15:01,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 14:15:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:15:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:15:01,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:15:01,411 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:15:01,428 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:15:05,911 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:15:05,929 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:15:05,930 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-21 14:15:05,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:15:05 BoogieIcfgContainer [2021-12-21 14:15:05,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:15:05,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:15:05,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:15:05,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:15:05,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:14:58" (1/3) ... [2021-12-21 14:15:05,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34729c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:15:05, skipping insertion in model container [2021-12-21 14:15:05,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:00" (2/3) ... [2021-12-21 14:15:05,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34729c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:15:05, skipping insertion in model container [2021-12-21 14:15:05,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:15:05" (3/3) ... [2021-12-21 14:15:05,939 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.10.cil-2.c [2021-12-21 14:15:05,942 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:15:05,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:15:05,977 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:15:05,982 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 [2021-12-21 14:15:05,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:15:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-21 14:15:06,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:15:06,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:15:06,030 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] [2021-12-21 14:15:06,031 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:15:06,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:15:06,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2021-12-21 14:15:06,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:15:06,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320046265] [2021-12-21 14:15:06,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:15:06,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:15:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:15:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:15:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:06,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:15:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:06,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:15:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:06,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:15:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:06,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:15:06,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:15:06,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320046265] [2021-12-21 14:15:06,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320046265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:15:06,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:15:06,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:15:06,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281012043] [2021-12-21 14:15:06,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:15:06,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:15:06,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:15:06,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:15:06,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:15:06,382 INFO L87 Difference]: Start difference. First operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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) [2021-12-21 14:15:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:15:07,800 INFO L93 Difference]: Finished difference Result 5140 states and 9446 transitions. [2021-12-21 14:15:07,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:15:07,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 156 [2021-12-21 14:15:07,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:15:07,822 INFO L225 Difference]: With dead ends: 5140 [2021-12-21 14:15:07,822 INFO L226 Difference]: Without dead ends: 2568 [2021-12-21 14:15:07,830 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 [2021-12-21 14:15:07,833 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 882 mSDsluCounter, 12431 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 17020 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:15:07,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 17020 Invalid, 656 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 14:15:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-12-21 14:15:07,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2448. [2021-12-21 14:15:07,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.830298013245033) internal successors, (4422), 2418 states have internal predecessors, (4422), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-21 14:15:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4470 transitions. [2021-12-21 14:15:07,934 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4470 transitions. Word has length 156 [2021-12-21 14:15:07,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:15:07,935 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4470 transitions. [2021-12-21 14:15:07,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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) [2021-12-21 14:15:07,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4470 transitions. [2021-12-21 14:15:07,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:15:07,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:15:07,944 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] [2021-12-21 14:15:07,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:15:07,944 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:15:07,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:15:07,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1988815353, now seen corresponding path program 1 times [2021-12-21 14:15:07,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:15:07,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849808505] [2021-12-21 14:15:07,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:15:07,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:15:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:08,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:15:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:08,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:15:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:08,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:15:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:08,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:15:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:08,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:15:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:15:08,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:15:08,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849808505] [2021-12-21 14:15:08,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849808505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:15:08,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:15:08,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:15:08,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259473609] [2021-12-21 14:15:08,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:15:08,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:15:08,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:15:08,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:15:08,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:15:08,124 INFO L87 Difference]: Start difference. First operand 2448 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:11,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:15:11,073 INFO L93 Difference]: Finished difference Result 3341 states and 5922 transitions. [2021-12-21 14:15:11,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:15:11,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:15:11,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:15:11,086 INFO L225 Difference]: With dead ends: 3341 [2021-12-21 14:15:11,097 INFO L226 Difference]: Without dead ends: 3032 [2021-12-21 14:15:11,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:15:11,105 INFO L933 BasicCegarLoop]: 4828 mSDtfsCounter, 5220 mSDsluCounter, 17526 mSDsCounter, 0 mSdLazyCounter, 2728 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5237 SdHoareTripleChecker+Valid, 22354 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:15:11,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5237 Valid, 22354 Invalid, 2805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2728 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 14:15:11,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-12-21 14:15:11,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2775. [2021-12-21 14:15:11,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2714 states have (on average 1.8043478260869565) internal successors, (4897), 2718 states have internal predecessors, (4897), 45 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2021-12-21 14:15:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4994 transitions. [2021-12-21 14:15:11,281 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4994 transitions. Word has length 156 [2021-12-21 14:15:11,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:15:11,283 INFO L470 AbstractCegarLoop]: Abstraction has 2775 states and 4994 transitions. [2021-12-21 14:15:11,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:11,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4994 transitions. [2021-12-21 14:15:11,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:15:11,286 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:15:11,286 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] [2021-12-21 14:15:11,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:15:11,287 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:15:11,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:15:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash 371374903, now seen corresponding path program 1 times [2021-12-21 14:15:11,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:15:11,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166514763] [2021-12-21 14:15:11,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:15:11,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:15:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:11,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:15:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:11,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:15:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:15:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:11,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:15:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:11,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:15:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:15:11,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:15:11,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166514763] [2021-12-21 14:15:11,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166514763] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:15:11,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:15:11,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:15:11,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238598280] [2021-12-21 14:15:11,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:15:11,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:15:11,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:15:11,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:15:11,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:15:11,560 INFO L87 Difference]: Start difference. First operand 2775 states and 4994 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:15:13,674 INFO L93 Difference]: Finished difference Result 4476 states and 7734 transitions. [2021-12-21 14:15:13,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:15:13,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:15:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:15:13,706 INFO L225 Difference]: With dead ends: 4476 [2021-12-21 14:15:13,707 INFO L226 Difference]: Without dead ends: 3842 [2021-12-21 14:15:13,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:15:13,716 INFO L933 BasicCegarLoop]: 4755 mSDtfsCounter, 5260 mSDsluCounter, 17435 mSDsCounter, 0 mSdLazyCounter, 2596 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5277 SdHoareTripleChecker+Valid, 22190 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:15:13,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5277 Valid, 22190 Invalid, 2680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2596 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 14:15:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2021-12-21 14:15:13,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3377. [2021-12-21 14:15:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3264 states have (on average 1.7634803921568627) internal successors, (5756), 3270 states have internal predecessors, (5756), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2021-12-21 14:15:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 5939 transitions. [2021-12-21 14:15:13,946 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 5939 transitions. Word has length 156 [2021-12-21 14:15:13,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:15:13,946 INFO L470 AbstractCegarLoop]: Abstraction has 3377 states and 5939 transitions. [2021-12-21 14:15:13,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 5939 transitions. [2021-12-21 14:15:13,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:15:13,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:15:13,949 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] [2021-12-21 14:15:13,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:15:13,949 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:15:13,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:15:13,950 INFO L85 PathProgramCache]: Analyzing trace with hash 734841401, now seen corresponding path program 1 times [2021-12-21 14:15:13,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:15:13,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315948934] [2021-12-21 14:15:13,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:15:13,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:15:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:15:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:14,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:15:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:15:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:14,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:15:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:14,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:15:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:15:14,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:15:14,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315948934] [2021-12-21 14:15:14,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315948934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:15:14,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:15:14,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:15:14,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902589640] [2021-12-21 14:15:14,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:15:14,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:15:14,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:15:14,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:15:14,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:15:14,123 INFO L87 Difference]: Start difference. First operand 3377 states and 5939 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:16,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:15:16,703 INFO L93 Difference]: Finished difference Result 6696 states and 11267 transitions. [2021-12-21 14:15:16,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:15:16,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:15:16,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:15:16,723 INFO L225 Difference]: With dead ends: 6696 [2021-12-21 14:15:16,724 INFO L226 Difference]: Without dead ends: 5460 [2021-12-21 14:15:16,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:15:16,735 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22337 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:15:16,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22337 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2732 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 14:15:16,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2021-12-21 14:15:16,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 4583. [2021-12-21 14:15:16,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 4366 states have (on average 1.712322491983509) internal successors, (7476), 4376 states have internal predecessors, (7476), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-21 14:15:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 7837 transitions. [2021-12-21 14:15:16,881 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 7837 transitions. Word has length 156 [2021-12-21 14:15:16,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:15:16,882 INFO L470 AbstractCegarLoop]: Abstraction has 4583 states and 7837 transitions. [2021-12-21 14:15:16,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 7837 transitions. [2021-12-21 14:15:16,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:15:16,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:15:16,889 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] [2021-12-21 14:15:16,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:15:16,889 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:15:16,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:15:16,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1023660791, now seen corresponding path program 1 times [2021-12-21 14:15:16,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:15:16,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896823960] [2021-12-21 14:15:16,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:15:16,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:15:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:16,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:15:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:16,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:15:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:16,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:15:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:17,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:15:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:17,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:15:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:15:17,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:15:17,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896823960] [2021-12-21 14:15:17,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896823960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:15:17,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:15:17,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:15:17,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034796609] [2021-12-21 14:15:17,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:15:17,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:15:17,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:15:17,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:15:17,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:15:17,013 INFO L87 Difference]: Start difference. First operand 4583 states and 7837 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:15:19,661 INFO L93 Difference]: Finished difference Result 11134 states and 18347 transitions. [2021-12-21 14:15:19,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:15:19,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:15:19,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:15:19,691 INFO L225 Difference]: With dead ends: 11134 [2021-12-21 14:15:19,692 INFO L226 Difference]: Without dead ends: 8692 [2021-12-21 14:15:19,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:15:19,702 INFO L933 BasicCegarLoop]: 4816 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2726 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22334 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 14:15:19,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22334 Invalid, 2806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2726 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 14:15:19,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2021-12-21 14:15:19,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 7001. [2021-12-21 14:15:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6576 states have (on average 1.6611922141119222) internal successors, (10924), 6594 states have internal predecessors, (10924), 311 states have call successors, (311), 96 states have call predecessors, (311), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2021-12-21 14:15:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11659 transitions. [2021-12-21 14:15:19,948 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11659 transitions. Word has length 156 [2021-12-21 14:15:19,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:15:19,949 INFO L470 AbstractCegarLoop]: Abstraction has 7001 states and 11659 transitions. [2021-12-21 14:15:19,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:19,963 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11659 transitions. [2021-12-21 14:15:19,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:15:19,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:15:19,967 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] [2021-12-21 14:15:19,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:15:19,968 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:15:19,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:15:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash 478788217, now seen corresponding path program 1 times [2021-12-21 14:15:19,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:15:19,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719976164] [2021-12-21 14:15:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:15:19,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:15:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:19,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:15:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:20,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:15:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:20,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:15:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:20,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:15:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:20,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:15:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:20,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:15:20,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:15:20,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719976164] [2021-12-21 14:15:20,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719976164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:15:20,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:15:20,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:15:20,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819554534] [2021-12-21 14:15:20,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:15:20,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:15:20,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:15:20,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:15:20,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:15:20,092 INFO L87 Difference]: Start difference. First operand 7001 states and 11659 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:15:22,946 INFO L93 Difference]: Finished difference Result 20008 states and 32563 transitions. [2021-12-21 14:15:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:15:22,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:15:22,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:15:22,993 INFO L225 Difference]: With dead ends: 20008 [2021-12-21 14:15:22,993 INFO L226 Difference]: Without dead ends: 15148 [2021-12-21 14:15:23,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:15:23,009 INFO L933 BasicCegarLoop]: 4813 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22331 SdHoareTripleChecker+Invalid, 2800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 14:15:23,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22331 Invalid, 2800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 14:15:23,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15148 states. [2021-12-21 14:15:23,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 11851. [2021-12-21 14:15:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11851 states, 11010 states have (on average 1.620345140781108) internal successors, (17840), 11044 states have internal predecessors, (17840), 615 states have call successors, (615), 192 states have call predecessors, (615), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2021-12-21 14:15:23,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11851 states to 11851 states and 19377 transitions. [2021-12-21 14:15:23,455 INFO L78 Accepts]: Start accepts. Automaton has 11851 states and 19377 transitions. Word has length 156 [2021-12-21 14:15:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:15:23,455 INFO L470 AbstractCegarLoop]: Abstraction has 11851 states and 19377 transitions. [2021-12-21 14:15:23,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:23,456 INFO L276 IsEmpty]: Start isEmpty. Operand 11851 states and 19377 transitions. [2021-12-21 14:15:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:15:23,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:15:23,464 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] [2021-12-21 14:15:23,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:15:23,465 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:15:23,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:15:23,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1153948343, now seen corresponding path program 1 times [2021-12-21 14:15:23,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:15:23,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930133069] [2021-12-21 14:15:23,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:15:23,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:15:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:15:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:23,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:15:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:23,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:15:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:23,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:15:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:23,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:15:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:23,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:15:23,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:15:23,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930133069] [2021-12-21 14:15:23,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930133069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:15:23,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:15:23,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:15:23,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442705209] [2021-12-21 14:15:23,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:15:23,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:15:23,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:15:23,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:15:23,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:15:23,579 INFO L87 Difference]: Start difference. First operand 11851 states and 19377 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:27,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:15:27,422 INFO L93 Difference]: Finished difference Result 37754 states and 61183 transitions. [2021-12-21 14:15:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:15:27,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:15:27,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:15:27,599 INFO L225 Difference]: With dead ends: 37754 [2021-12-21 14:15:27,599 INFO L226 Difference]: Without dead ends: 28044 [2021-12-21 14:15:27,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:15:27,631 INFO L933 BasicCegarLoop]: 4810 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22328 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:15:27,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22328 Invalid, 2794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 14:15:27,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28044 states. [2021-12-21 14:15:28,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28044 to 21581. [2021-12-21 14:15:28,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.593128390596745) internal successors, (31716), 19974 states have internal predecessors, (31716), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2021-12-21 14:15:28,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 35019 transitions. [2021-12-21 14:15:28,590 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 35019 transitions. Word has length 156 [2021-12-21 14:15:28,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:15:28,590 INFO L470 AbstractCegarLoop]: Abstraction has 21581 states and 35019 transitions. [2021-12-21 14:15:28,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:28,591 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 35019 transitions. [2021-12-21 14:15:28,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:15:28,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:15:28,602 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] [2021-12-21 14:15:28,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:15:28,603 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:15:28,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:15:28,603 INFO L85 PathProgramCache]: Analyzing trace with hash 205896377, now seen corresponding path program 1 times [2021-12-21 14:15:28,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:15:28,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565358822] [2021-12-21 14:15:28,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:15:28,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:15:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:28,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:15:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:28,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:15:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:28,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:15:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:28,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:15:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:28,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:15:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:15:28,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:15:28,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565358822] [2021-12-21 14:15:28,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565358822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:15:28,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:15:28,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:15:28,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681676136] [2021-12-21 14:15:28,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:15:28,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:15:28,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:15:28,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:15:28,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:15:28,712 INFO L87 Difference]: Start difference. First operand 21581 states and 35019 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:31,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:15:31,370 INFO L93 Difference]: Finished difference Result 47941 states and 78380 transitions. [2021-12-21 14:15:31,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:15:31,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:15:31,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:15:31,446 INFO L225 Difference]: With dead ends: 47941 [2021-12-21 14:15:31,447 INFO L226 Difference]: Without dead ends: 28499 [2021-12-21 14:15:31,482 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 [2021-12-21 14:15:31,483 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 4916 mSDsluCounter, 16636 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4934 SdHoareTripleChecker+Valid, 21132 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 14:15:31,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4934 Valid, 21132 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 14:15:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28499 states. [2021-12-21 14:15:32,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28499 to 21581. [2021-12-21 14:15:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.5898633715089412) internal successors, (31651), 19974 states have internal predecessors, (31651), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2021-12-21 14:15:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 34954 transitions. [2021-12-21 14:15:32,459 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 34954 transitions. Word has length 156 [2021-12-21 14:15:32,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:15:32,459 INFO L470 AbstractCegarLoop]: Abstraction has 21581 states and 34954 transitions. [2021-12-21 14:15:32,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:32,459 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 34954 transitions. [2021-12-21 14:15:32,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:15:32,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:15:32,470 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] [2021-12-21 14:15:32,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:15:32,470 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:15:32,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:15:32,471 INFO L85 PathProgramCache]: Analyzing trace with hash -378875273, now seen corresponding path program 1 times [2021-12-21 14:15:32,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:15:32,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464460878] [2021-12-21 14:15:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:15:32,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:15:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:32,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:15:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:32,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:15:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:32,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:15:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:32,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:15:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:32,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:15:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:32,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:15:32,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:15:32,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464460878] [2021-12-21 14:15:32,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464460878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:15:32,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:15:32,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:15:32,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160482114] [2021-12-21 14:15:32,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:15:32,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:15:32,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:15:32,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:15:32,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:15:32,567 INFO L87 Difference]: Start difference. First operand 21581 states and 34954 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:37,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:15:37,862 INFO L93 Difference]: Finished difference Result 73117 states and 118447 transitions. [2021-12-21 14:15:37,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:15:37,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:15:37,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:15:38,033 INFO L225 Difference]: With dead ends: 73117 [2021-12-21 14:15:38,034 INFO L226 Difference]: Without dead ends: 53677 [2021-12-21 14:15:38,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:15:38,082 INFO L933 BasicCegarLoop]: 4794 mSDtfsCounter, 5247 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 22312 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 14:15:38,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5264 Valid, 22312 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2610 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 14:15:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53677 states. [2021-12-21 14:15:40,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53677 to 41230. [2021-12-21 14:15:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 37893 states have (on average 1.5734304488955744) internal successors, (59622), 38023 states have internal predecessors, (59622), 2439 states have call successors, (2439), 768 states have call predecessors, (2439), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2021-12-21 14:15:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 66943 transitions. [2021-12-21 14:15:40,295 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 66943 transitions. Word has length 156 [2021-12-21 14:15:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:15:40,296 INFO L470 AbstractCegarLoop]: Abstraction has 41230 states and 66943 transitions. [2021-12-21 14:15:40,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:40,296 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 66943 transitions. [2021-12-21 14:15:40,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:15:40,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:15:40,315 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] [2021-12-21 14:15:40,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:15:40,315 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:15:40,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:15:40,316 INFO L85 PathProgramCache]: Analyzing trace with hash -808533579, now seen corresponding path program 1 times [2021-12-21 14:15:40,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:15:40,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591585480] [2021-12-21 14:15:40,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:15:40,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:15:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:40,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:15:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:40,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:15:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:40,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:15:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:40,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:15:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:40,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:15:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:15:40,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:15:40,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591585480] [2021-12-21 14:15:40,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591585480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:15:40,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:15:40,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:15:40,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154260696] [2021-12-21 14:15:40,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:15:40,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:15:40,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:15:40,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:15:40,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:15:40,414 INFO L87 Difference]: Start difference. First operand 41230 states and 66943 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:48,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:15:48,857 INFO L93 Difference]: Finished difference Result 144096 states and 235584 transitions. [2021-12-21 14:15:48,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:15:48,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:15:48,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:15:49,254 INFO L225 Difference]: With dead ends: 144096 [2021-12-21 14:15:49,254 INFO L226 Difference]: Without dead ends: 105007 [2021-12-21 14:15:49,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:15:49,357 INFO L933 BasicCegarLoop]: 4738 mSDtfsCounter, 5273 mSDsluCounter, 17435 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5290 SdHoareTripleChecker+Valid, 22173 SdHoareTripleChecker+Invalid, 2596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:15:49,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5290 Valid, 22173 Invalid, 2596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 14:15:49,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105007 states. [2021-12-21 14:15:54,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105007 to 80656. [2021-12-21 14:15:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80656 states, 73991 states have (on average 1.564460542498412) internal successors, (115756), 74249 states have internal predecessors, (115756), 4871 states have call successors, (4871), 1536 states have call predecessors, (4871), 1792 states have return successors, (11944), 5126 states have call predecessors, (11944), 4871 states have call successors, (11944) [2021-12-21 14:15:54,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80656 states to 80656 states and 132571 transitions. [2021-12-21 14:15:54,944 INFO L78 Accepts]: Start accepts. Automaton has 80656 states and 132571 transitions. Word has length 156 [2021-12-21 14:15:54,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:15:54,953 INFO L470 AbstractCegarLoop]: Abstraction has 80656 states and 132571 transitions. [2021-12-21 14:15:54,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-21 14:15:54,953 INFO L276 IsEmpty]: Start isEmpty. Operand 80656 states and 132571 transitions. [2021-12-21 14:15:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:15:55,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:15:55,032 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] [2021-12-21 14:15:55,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:15:55,033 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:15:55,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:15:55,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1515130185, now seen corresponding path program 1 times [2021-12-21 14:15:55,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:15:55,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811469905] [2021-12-21 14:15:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:15:55,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:15:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:55,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:15:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:55,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:15:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:15:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:55,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:15:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:55,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:15:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:15:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:15:55,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:15:55,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811469905] [2021-12-21 14:15:55,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811469905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:15:55,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:15:55,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:15:55,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156950720] [2021-12-21 14:15:55,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:15:55,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:15:55,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:15:55,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:15:55,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:15:55,216 INFO L87 Difference]: Start difference. First operand 80656 states and 132571 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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)