./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/systemc/token_ring.09.cil-1.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 834ccc2d6e5ce947bfece9c1e11f57131346eaac8927553a9495d7568350ac6e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 15:39:55,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 15:39:55,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 15:39:55,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 15:39:55,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 15:39:55,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 15:39:55,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 15:39:55,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 15:39:55,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 15:39:55,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 15:39:55,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 15:39:55,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 15:39:55,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 15:39:55,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 15:39:55,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 15:39:55,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 15:39:55,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 15:39:55,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 15:39:55,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 15:39:55,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 15:39:55,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 15:39:55,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 15:39:55,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 15:39:55,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 15:39:55,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 15:39:55,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 15:39:55,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 15:39:55,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 15:39:55,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 15:39:55,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 15:39:55,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 15:39:55,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 15:39:55,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 15:39:55,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 15:39:55,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 15:39:55,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 15:39:55,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 15:39:55,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 15:39:55,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 15:39:55,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 15:39:55,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 15:39:55,382 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 15:39:55,415 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 15:39:55,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 15:39:55,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 15:39:55,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 15:39:55,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 15:39:55,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 15:39:55,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 15:39:55,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 15:39:55,418 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 15:39:55,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 15:39:55,419 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 15:39:55,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 15:39:55,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 15:39:55,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 15:39:55,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 15:39:55,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 15:39:55,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 15:39:55,420 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 15:39:55,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 15:39:55,421 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 15:39:55,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 15:39:55,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 15:39:55,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 15:39:55,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 15:39:55,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:39:55,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 15:39:55,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 15:39:55,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 15:39:55,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 15:39:55,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 15:39:55,422 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 15:39:55,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 15:39:55,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 15:39:55,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 15:39:55,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 834ccc2d6e5ce947bfece9c1e11f57131346eaac8927553a9495d7568350ac6e [2021-12-17 15:39:55,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 15:39:55,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 15:39:55,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 15:39:55,644 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 15:39:55,644 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 15:39:55,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.09.cil-1.c [2021-12-17 15:39:55,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd118746d/869f62e3d6934d568cde3425651d6107/FLAGa545c437c [2021-12-17 15:39:56,110 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 15:39:56,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.09.cil-1.c [2021-12-17 15:39:56,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd118746d/869f62e3d6934d568cde3425651d6107/FLAGa545c437c [2021-12-17 15:39:56,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd118746d/869f62e3d6934d568cde3425651d6107 [2021-12-17 15:39:56,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 15:39:56,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 15:39:56,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 15:39:56,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 15:39:56,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 15:39:56,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:39:56" (1/1) ... [2021-12-17 15:39:56,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64135a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:39:56, skipping insertion in model container [2021-12-17 15:39:56,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:39:56" (1/1) ... [2021-12-17 15:39:56,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 15:39:56,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 15:39:56,290 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/systemc/token_ring.09.cil-1.c[671,684] [2021-12-17 15:39:56,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:39:56,396 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 15:39:56,410 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/systemc/token_ring.09.cil-1.c[671,684] [2021-12-17 15:39:56,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:39:56,451 INFO L208 MainTranslator]: Completed translation [2021-12-17 15:39:56,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:39:56 WrapperNode [2021-12-17 15:39:56,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 15:39:56,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 15:39:56,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 15:39:56,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 15:39:56,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:39:56" (1/1) ... [2021-12-17 15:39:56,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:39:56" (1/1) ... [2021-12-17 15:39:56,493 INFO L137 Inliner]: procedures = 46, calls = 58, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 679 [2021-12-17 15:39:56,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 15:39:56,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 15:39:56,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 15:39:56,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 15:39:56,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:39:56" (1/1) ... [2021-12-17 15:39:56,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:39:56" (1/1) ... [2021-12-17 15:39:56,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:39:56" (1/1) ... [2021-12-17 15:39:56,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:39:56" (1/1) ... [2021-12-17 15:39:56,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:39:56" (1/1) ... [2021-12-17 15:39:56,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:39:56" (1/1) ... [2021-12-17 15:39:56,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:39:56" (1/1) ... [2021-12-17 15:39:56,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 15:39:56,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 15:39:56,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 15:39:56,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 15:39:56,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:39:56" (1/1) ... [2021-12-17 15:39:56,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:39:56,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:39:56,570 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) [2021-12-17 15:39:56,576 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 [2021-12-17 15:39:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 15:39:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 15:39:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 15:39:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 15:39:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 15:39:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 15:39:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 15:39:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 15:39:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 15:39:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 15:39:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 15:39:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 15:39:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 15:39:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 15:39:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 15:39:56,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 15:39:56,691 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 15:39:56,692 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 15:39:57,157 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 15:39:57,169 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 15:39:57,170 INFO L301 CfgBuilder]: Removed 12 assume(true) statements. [2021-12-17 15:39:57,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:39:57 BoogieIcfgContainer [2021-12-17 15:39:57,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 15:39:57,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 15:39:57,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 15:39:57,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 15:39:57,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 03:39:56" (1/3) ... [2021-12-17 15:39:57,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd88b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:39:57, skipping insertion in model container [2021-12-17 15:39:57,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:39:56" (2/3) ... [2021-12-17 15:39:57,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd88b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:39:57, skipping insertion in model container [2021-12-17 15:39:57,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:39:57" (3/3) ... [2021-12-17 15:39:57,179 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-1.c [2021-12-17 15:39:57,183 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 15:39:57,183 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 15:39:57,225 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 15:39:57,232 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 [2021-12-17 15:39:57,232 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 15:39:57,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 307 states, 276 states have (on average 1.6521739130434783) internal successors, (456), 278 states have internal predecessors, (456), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-17 15:39:57,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 15:39:57,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:39:57,264 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] [2021-12-17 15:39:57,264 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:39:57,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:39:57,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1628036766, now seen corresponding path program 1 times [2021-12-17 15:39:57,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:39:57,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311712722] [2021-12-17 15:39:57,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:39:57,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:39:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:39:57,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:39:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:39:57,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:39:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:39:57,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 15:39:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:39:57,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:39:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:39:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 15:39:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:39:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:39:57,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:39:57,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311712722] [2021-12-17 15:39:57,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311712722] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:39:57,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:39:57,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:39:57,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650876760] [2021-12-17 15:39:57,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:39:57,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:39:57,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:39:57,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:39:57,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 15:39:57,701 INFO L87 Difference]: Start difference. First operand has 307 states, 276 states have (on average 1.6521739130434783) internal successors, (456), 278 states have internal predecessors, (456), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-12-17 15:39:58,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:39:58,632 INFO L93 Difference]: Finished difference Result 710 states and 1171 transitions. [2021-12-17 15:39:58,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:39:58,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 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 144 [2021-12-17 15:39:58,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:39:58,651 INFO L225 Difference]: With dead ends: 710 [2021-12-17 15:39:58,652 INFO L226 Difference]: Without dead ends: 411 [2021-12-17 15:39:58,659 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 [2021-12-17 15:39:58,662 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 803 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 15:39:58,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 858 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 15:39:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-12-17 15:39:58,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 302. [2021-12-17 15:39:58,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 272 states have (on average 1.5625) internal successors, (425), 273 states have internal predecessors, (425), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-17 15:39:58,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 471 transitions. [2021-12-17 15:39:58,727 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 471 transitions. Word has length 144 [2021-12-17 15:39:58,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:39:58,728 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 471 transitions. [2021-12-17 15:39:58,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-12-17 15:39:58,728 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 471 transitions. [2021-12-17 15:39:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 15:39:58,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:39:58,737 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] [2021-12-17 15:39:58,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 15:39:58,737 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:39:58,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:39:58,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2122057956, now seen corresponding path program 1 times [2021-12-17 15:39:58,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:39:58,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290197643] [2021-12-17 15:39:58,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:39:58,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:39:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:39:58,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:39:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:39:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:39:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:39:58,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 15:39:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:39:58,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:39:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:39:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 15:39:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:39:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:39:58,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:39:58,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290197643] [2021-12-17 15:39:58,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290197643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:39:58,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:39:58,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:39:58,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960993046] [2021-12-17 15:39:58,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:39:58,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:39:58,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:39:58,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:39:58,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:39:58,955 INFO L87 Difference]: Start difference. First operand 302 states and 471 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 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) [2021-12-17 15:40:00,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:40:00,674 INFO L93 Difference]: Finished difference Result 1102 states and 1758 transitions. [2021-12-17 15:40:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 15:40:00,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 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 144 [2021-12-17 15:40:00,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:40:00,685 INFO L225 Difference]: With dead ends: 1102 [2021-12-17 15:40:00,685 INFO L226 Difference]: Without dead ends: 817 [2021-12-17 15:40:00,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-17 15:40:00,687 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1208 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:40:00,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 1366 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 15:40:00,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-12-17 15:40:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 600. [2021-12-17 15:40:00,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 545 states have (on average 1.5743119266055046) internal successors, (858), 547 states have internal predecessors, (858), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-17 15:40:00,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 943 transitions. [2021-12-17 15:40:00,729 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 943 transitions. Word has length 144 [2021-12-17 15:40:00,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:40:00,730 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 943 transitions. [2021-12-17 15:40:00,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 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) [2021-12-17 15:40:00,730 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 943 transitions. [2021-12-17 15:40:00,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 15:40:00,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:40:00,732 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] [2021-12-17 15:40:00,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 15:40:00,732 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:40:00,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:40:00,733 INFO L85 PathProgramCache]: Analyzing trace with hash -379054432, now seen corresponding path program 1 times [2021-12-17 15:40:00,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:40:00,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662916622] [2021-12-17 15:40:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:40:00,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:40:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:40:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:40:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:00,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 15:40:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:00,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:40:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:00,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 15:40:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:40:00,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:40:00,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662916622] [2021-12-17 15:40:00,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662916622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:40:00,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:40:00,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:40:00,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141172991] [2021-12-17 15:40:00,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:40:00,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:40:00,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:40:00,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:40:00,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:40:00,834 INFO L87 Difference]: Start difference. First operand 600 states and 943 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:02,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:40:02,924 INFO L93 Difference]: Finished difference Result 1820 states and 2905 transitions. [2021-12-17 15:40:02,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 15:40:02,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2021-12-17 15:40:02,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:40:02,934 INFO L225 Difference]: With dead ends: 1820 [2021-12-17 15:40:02,934 INFO L226 Difference]: Without dead ends: 1237 [2021-12-17 15:40:02,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:40:02,941 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 1225 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-17 15:40:02,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1241 Valid, 2339 Invalid, 2462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-17 15:40:02,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2021-12-17 15:40:02,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 877. [2021-12-17 15:40:02,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 797 states have (on average 1.5671267252195733) internal successors, (1249), 800 states have internal predecessors, (1249), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2021-12-17 15:40:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1372 transitions. [2021-12-17 15:40:02,998 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1372 transitions. Word has length 144 [2021-12-17 15:40:02,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:40:02,998 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1372 transitions. [2021-12-17 15:40:02,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:02,998 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1372 transitions. [2021-12-17 15:40:02,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 15:40:02,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:40:03,000 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] [2021-12-17 15:40:03,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 15:40:03,000 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:40:03,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:40:03,001 INFO L85 PathProgramCache]: Analyzing trace with hash 567983454, now seen corresponding path program 1 times [2021-12-17 15:40:03,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:40:03,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41870009] [2021-12-17 15:40:03,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:40:03,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:40:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:03,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:40:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:03,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:40:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:03,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 15:40:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:03,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:40:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:03,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 15:40:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:40:03,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:40:03,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41870009] [2021-12-17 15:40:03,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41870009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:40:03,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:40:03,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:40:03,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369020525] [2021-12-17 15:40:03,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:40:03,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:40:03,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:40:03,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:40:03,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:40:03,114 INFO L87 Difference]: Start difference. First operand 877 states and 1372 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:05,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:40:05,060 INFO L93 Difference]: Finished difference Result 2878 states and 4582 transitions. [2021-12-17 15:40:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 15:40:05,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2021-12-17 15:40:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:40:05,071 INFO L225 Difference]: With dead ends: 2878 [2021-12-17 15:40:05,071 INFO L226 Difference]: Without dead ends: 2018 [2021-12-17 15:40:05,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:40:05,079 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 1222 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 2471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:40:05,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 2327 Invalid, 2471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2399 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 15:40:05,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2021-12-17 15:40:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1432. [2021-12-17 15:40:05,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1302 states have (on average 1.5606758832565284) internal successors, (2032), 1307 states have internal predecessors, (2032), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-17 15:40:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2235 transitions. [2021-12-17 15:40:05,156 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2235 transitions. Word has length 144 [2021-12-17 15:40:05,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:40:05,157 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 2235 transitions. [2021-12-17 15:40:05,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:05,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2235 transitions. [2021-12-17 15:40:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 15:40:05,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:40:05,160 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] [2021-12-17 15:40:05,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 15:40:05,161 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:40:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:40:05,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1429817056, now seen corresponding path program 1 times [2021-12-17 15:40:05,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:40:05,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439847564] [2021-12-17 15:40:05,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:40:05,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:40:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:05,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:40:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:05,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:40:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 15:40:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:05,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:40:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:05,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 15:40:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:40:05,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:40:05,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439847564] [2021-12-17 15:40:05,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439847564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:40:05,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:40:05,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:40:05,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323395970] [2021-12-17 15:40:05,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:40:05,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:40:05,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:40:05,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:40:05,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:40:05,264 INFO L87 Difference]: Start difference. First operand 1432 states and 2235 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:07,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:40:07,263 INFO L93 Difference]: Finished difference Result 4913 states and 7789 transitions. [2021-12-17 15:40:07,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 15:40:07,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2021-12-17 15:40:07,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:40:07,277 INFO L225 Difference]: With dead ends: 4913 [2021-12-17 15:40:07,277 INFO L226 Difference]: Without dead ends: 3498 [2021-12-17 15:40:07,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:40:07,281 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 1218 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:40:07,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1234 Valid, 2323 Invalid, 2466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 15:40:07,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2021-12-17 15:40:07,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 2543. [2021-12-17 15:40:07,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 2313 states have (on average 1.5555555555555556) internal successors, (3598), 2322 states have internal predecessors, (3598), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-12-17 15:40:07,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3967 transitions. [2021-12-17 15:40:07,378 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3967 transitions. Word has length 144 [2021-12-17 15:40:07,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:40:07,379 INFO L470 AbstractCegarLoop]: Abstraction has 2543 states and 3967 transitions. [2021-12-17 15:40:07,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:07,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3967 transitions. [2021-12-17 15:40:07,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 15:40:07,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:40:07,381 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] [2021-12-17 15:40:07,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 15:40:07,381 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:40:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:40:07,382 INFO L85 PathProgramCache]: Analyzing trace with hash -620591842, now seen corresponding path program 1 times [2021-12-17 15:40:07,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:40:07,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987350357] [2021-12-17 15:40:07,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:40:07,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:40:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:40:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:07,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:40:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:07,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 15:40:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:07,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:40:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:07,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 15:40:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:40:07,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:40:07,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987350357] [2021-12-17 15:40:07,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987350357] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:40:07,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:40:07,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:40:07,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979388146] [2021-12-17 15:40:07,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:40:07,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:40:07,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:40:07,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:40:07,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:40:07,475 INFO L87 Difference]: Start difference. First operand 2543 states and 3967 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:09,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:40:09,466 INFO L93 Difference]: Finished difference Result 8982 states and 14219 transitions. [2021-12-17 15:40:09,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 15:40:09,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2021-12-17 15:40:09,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:40:09,502 INFO L225 Difference]: With dead ends: 8982 [2021-12-17 15:40:09,502 INFO L226 Difference]: Without dead ends: 6456 [2021-12-17 15:40:09,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:40:09,510 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 1217 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 2461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:40:09,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1233 Valid, 2317 Invalid, 2461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 15:40:09,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2021-12-17 15:40:09,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 4770. [2021-12-17 15:40:09,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 4340 states have (on average 1.552073732718894) internal successors, (6736), 4357 states have internal predecessors, (6736), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-17 15:40:09,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 7455 transitions. [2021-12-17 15:40:09,700 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 7455 transitions. Word has length 144 [2021-12-17 15:40:09,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:40:09,701 INFO L470 AbstractCegarLoop]: Abstraction has 4770 states and 7455 transitions. [2021-12-17 15:40:09,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:09,701 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 7455 transitions. [2021-12-17 15:40:09,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 15:40:09,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:40:09,704 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] [2021-12-17 15:40:09,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 15:40:09,705 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:40:09,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:40:09,705 INFO L85 PathProgramCache]: Analyzing trace with hash -132544736, now seen corresponding path program 1 times [2021-12-17 15:40:09,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:40:09,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921295152] [2021-12-17 15:40:09,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:40:09,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:40:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:09,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:40:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:09,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:40:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 15:40:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:09,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:40:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:09,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 15:40:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:40:09,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:40:09,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921295152] [2021-12-17 15:40:09,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921295152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:40:09,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:40:09,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:40:09,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964167115] [2021-12-17 15:40:09,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:40:09,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:40:09,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:40:09,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:40:09,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:40:09,825 INFO L87 Difference]: Start difference. First operand 4770 states and 7455 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:11,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:40:11,900 INFO L93 Difference]: Finished difference Result 17104 states and 27109 transitions. [2021-12-17 15:40:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 15:40:11,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2021-12-17 15:40:11,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:40:11,945 INFO L225 Difference]: With dead ends: 17104 [2021-12-17 15:40:11,946 INFO L226 Difference]: Without dead ends: 12351 [2021-12-17 15:40:11,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:40:11,961 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1299 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:40:11,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1315 Valid, 1616 Invalid, 2209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 15:40:11,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12351 states. [2021-12-17 15:40:12,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12351 to 9254. [2021-12-17 15:40:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9254 states, 8424 states have (on average 1.550807217473884) internal successors, (13064), 8457 states have internal predecessors, (13064), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2021-12-17 15:40:12,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9254 states to 9254 states and 14537 transitions. [2021-12-17 15:40:12,360 INFO L78 Accepts]: Start accepts. Automaton has 9254 states and 14537 transitions. Word has length 144 [2021-12-17 15:40:12,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:40:12,360 INFO L470 AbstractCegarLoop]: Abstraction has 9254 states and 14537 transitions. [2021-12-17 15:40:12,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:12,361 INFO L276 IsEmpty]: Start isEmpty. Operand 9254 states and 14537 transitions. [2021-12-17 15:40:12,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 15:40:12,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:40:12,368 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] [2021-12-17 15:40:12,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 15:40:12,369 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:40:12,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:40:12,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1414717022, now seen corresponding path program 1 times [2021-12-17 15:40:12,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:40:12,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123683713] [2021-12-17 15:40:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:40:12,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:40:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:40:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:40:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:12,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 15:40:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:12,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:40:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 15:40:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:40:12,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:40:12,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123683713] [2021-12-17 15:40:12,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123683713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:40:12,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:40:12,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:40:12,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649698979] [2021-12-17 15:40:12,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:40:12,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:40:12,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:40:12,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:40:12,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:40:12,486 INFO L87 Difference]: Start difference. First operand 9254 states and 14537 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:15,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:40:15,098 INFO L93 Difference]: Finished difference Result 33382 states and 53145 transitions. [2021-12-17 15:40:15,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 15:40:15,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2021-12-17 15:40:15,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:40:15,177 INFO L225 Difference]: With dead ends: 33382 [2021-12-17 15:40:15,178 INFO L226 Difference]: Without dead ends: 24145 [2021-12-17 15:40:15,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:40:15,209 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 1211 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 2358 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 2434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:40:15,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 2304 Invalid, 2434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2358 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 15:40:15,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24145 states. [2021-12-17 15:40:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24145 to 18251. [2021-12-17 15:40:16,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18251 states, 16621 states have (on average 1.5499669093315684) internal successors, (25762), 16686 states have internal predecessors, (25762), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2021-12-17 15:40:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18251 states to 18251 states and 28905 transitions. [2021-12-17 15:40:16,089 INFO L78 Accepts]: Start accepts. Automaton has 18251 states and 28905 transitions. Word has length 144 [2021-12-17 15:40:16,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:40:16,090 INFO L470 AbstractCegarLoop]: Abstraction has 18251 states and 28905 transitions. [2021-12-17 15:40:16,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:16,090 INFO L276 IsEmpty]: Start isEmpty. Operand 18251 states and 28905 transitions. [2021-12-17 15:40:16,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 15:40:16,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:40:16,100 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] [2021-12-17 15:40:16,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 15:40:16,101 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:40:16,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:40:16,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1037774560, now seen corresponding path program 1 times [2021-12-17 15:40:16,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:40:16,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962593066] [2021-12-17 15:40:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:40:16,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:40:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:16,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:40:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:16,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:40:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 15:40:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:40:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:16,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 15:40:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:40:16,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:40:16,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962593066] [2021-12-17 15:40:16,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962593066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:40:16,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:40:16,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:40:16,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628013419] [2021-12-17 15:40:16,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:40:16,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:40:16,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:40:16,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:40:16,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:40:16,215 INFO L87 Difference]: Start difference. First operand 18251 states and 28905 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:19,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:40:19,663 INFO L93 Difference]: Finished difference Result 65937 states and 105815 transitions. [2021-12-17 15:40:19,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 15:40:19,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2021-12-17 15:40:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:40:19,834 INFO L225 Difference]: With dead ends: 65937 [2021-12-17 15:40:19,834 INFO L226 Difference]: Without dead ends: 47703 [2021-12-17 15:40:19,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:40:19,904 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 1210 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:40:19,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 2299 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 15:40:19,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47703 states. [2021-12-17 15:40:21,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47703 to 36308. [2021-12-17 15:40:21,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36308 states, 33078 states have (on average 1.5494286232541266) internal successors, (51252), 33207 states have internal predecessors, (51252), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2021-12-17 15:40:21,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36308 states to 36308 states and 58221 transitions. [2021-12-17 15:40:21,602 INFO L78 Accepts]: Start accepts. Automaton has 36308 states and 58221 transitions. Word has length 144 [2021-12-17 15:40:21,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:40:21,602 INFO L470 AbstractCegarLoop]: Abstraction has 36308 states and 58221 transitions. [2021-12-17 15:40:21,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:21,603 INFO L276 IsEmpty]: Start isEmpty. Operand 36308 states and 58221 transitions. [2021-12-17 15:40:21,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 15:40:21,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:40:21,621 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] [2021-12-17 15:40:21,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 15:40:21,621 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:40:21,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:40:21,622 INFO L85 PathProgramCache]: Analyzing trace with hash -684228126, now seen corresponding path program 1 times [2021-12-17 15:40:21,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:40:21,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449281475] [2021-12-17 15:40:21,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:40:21,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:40:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:21,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:40:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:21,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:40:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:21,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 15:40:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:21,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:40:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 15:40:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:40:21,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:40:21,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449281475] [2021-12-17 15:40:21,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449281475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:40:21,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:40:21,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:40:21,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171404742] [2021-12-17 15:40:21,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:40:21,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:40:21,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:40:21,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:40:21,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:40:21,714 INFO L87 Difference]: Start difference. First operand 36308 states and 58221 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:27,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:40:27,264 INFO L93 Difference]: Finished difference Result 131048 states and 213005 transitions. [2021-12-17 15:40:27,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 15:40:27,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2021-12-17 15:40:27,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:40:27,619 INFO L225 Difference]: With dead ends: 131048 [2021-12-17 15:40:27,619 INFO L226 Difference]: Without dead ends: 94757 [2021-12-17 15:40:27,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:40:27,731 INFO L933 BasicCegarLoop]: 752 mSDtfsCounter, 1209 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:40:27,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 2294 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 15:40:27,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94757 states. [2021-12-17 15:40:30,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94757 to 72549. [2021-12-17 15:40:31,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72549 states, 66119 states have (on average 1.5490554908573935) internal successors, (102422), 66376 states have internal predecessors, (102422), 4631 states have call successors, (4631), 1542 states have call predecessors, (4631), 1798 states have return successors, (11448), 4886 states have call predecessors, (11448), 4631 states have call successors, (11448) [2021-12-17 15:40:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72549 states to 72549 states and 118501 transitions. [2021-12-17 15:40:31,349 INFO L78 Accepts]: Start accepts. Automaton has 72549 states and 118501 transitions. Word has length 144 [2021-12-17 15:40:31,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:40:31,349 INFO L470 AbstractCegarLoop]: Abstraction has 72549 states and 118501 transitions. [2021-12-17 15:40:31,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:31,349 INFO L276 IsEmpty]: Start isEmpty. Operand 72549 states and 118501 transitions. [2021-12-17 15:40:31,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 15:40:31,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:40:31,388 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] [2021-12-17 15:40:31,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 15:40:31,388 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:40:31,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:40:31,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1016871264, now seen corresponding path program 1 times [2021-12-17 15:40:31,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:40:31,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350845605] [2021-12-17 15:40:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:40:31,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:40:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:31,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:40:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:31,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:40:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 15:40:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:40:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:31,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 15:40:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:40:31,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:40:31,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350845605] [2021-12-17 15:40:31,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350845605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:40:31,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:40:31,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:40:31,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903122848] [2021-12-17 15:40:31,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:40:31,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:40:31,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:40:31,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:40:31,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:40:31,496 INFO L87 Difference]: Start difference. First operand 72549 states and 118501 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:43,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:40:43,398 INFO L93 Difference]: Finished difference Result 295831 states and 485765 transitions. [2021-12-17 15:40:43,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 15:40:43,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2021-12-17 15:40:43,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:40:44,620 INFO L225 Difference]: With dead ends: 295831 [2021-12-17 15:40:44,620 INFO L226 Difference]: Without dead ends: 223299 [2021-12-17 15:40:45,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 15:40:45,055 INFO L933 BasicCegarLoop]: 745 mSDtfsCounter, 1577 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 2327 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 2408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:40:45,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1603 Valid, 2279 Invalid, 2408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2327 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 15:40:45,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223299 states. [2021-12-17 15:40:52,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223299 to 144518. [2021-12-17 15:40:52,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144518 states, 131944 states have (on average 1.550900381980234) internal successors, (204632), 132457 states have internal predecessors, (204632), 8983 states have call successors, (8983), 3078 states have call predecessors, (8983), 3590 states have return successors, (29178), 9494 states have call predecessors, (29178), 8983 states have call successors, (29178) [2021-12-17 15:40:53,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144518 states to 144518 states and 242793 transitions. [2021-12-17 15:40:53,102 INFO L78 Accepts]: Start accepts. Automaton has 144518 states and 242793 transitions. Word has length 144 [2021-12-17 15:40:53,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:40:53,103 INFO L470 AbstractCegarLoop]: Abstraction has 144518 states and 242793 transitions. [2021-12-17 15:40:53,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2021-12-17 15:40:53,103 INFO L276 IsEmpty]: Start isEmpty. Operand 144518 states and 242793 transitions. [2021-12-17 15:40:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 15:40:53,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:40:53,178 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] [2021-12-17 15:40:53,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 15:40:53,179 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:40:53,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:40:53,180 INFO L85 PathProgramCache]: Analyzing trace with hash 912060962, now seen corresponding path program 1 times [2021-12-17 15:40:53,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:40:53,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904392443] [2021-12-17 15:40:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:40:53,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:40:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:53,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:40:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:53,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:40:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:53,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 15:40:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:40:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:53,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 15:40:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:40:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:40:53,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:40:53,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904392443] [2021-12-17 15:40:53,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904392443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:40:53,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:40:53,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:40:53,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766289595] [2021-12-17 15:40:53,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:40:53,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:40:53,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:40:53,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:40:53,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:40:53,261 INFO L87 Difference]: Start difference. First operand 144518 states and 242793 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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)