/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loop-acceleration/diamond_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:12:08,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:12:08,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:12:08,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:12:08,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:12:08,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:12:08,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:12:08,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:12:08,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:12:08,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:12:08,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:12:08,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:12:08,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:12:08,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:12:08,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:12:08,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:12:08,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:12:08,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:12:08,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:12:08,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:12:08,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:12:08,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:12:08,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:12:08,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:12:08,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:12:08,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:12:08,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:12:08,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:12:08,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:12:08,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:12:08,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:12:08,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:12:08,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:12:08,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:12:08,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:12:08,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:12:08,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:12:08,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:12:08,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:12:08,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:12:08,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:12:08,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 20:12:08,540 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:12:08,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:12:08,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:12:08,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:12:08,543 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:12:08,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:12:08,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:12:08,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:12:08,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:12:08,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:12:08,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:12:08,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:12:08,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:12:08,545 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:12:08,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:12:08,545 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:12:08,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:12:08,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:12:08,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:12:08,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:12:08,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:12:08,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:12:08,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:12:08,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:12:08,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:12:08,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:12:08,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:12:08,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:12:08,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:12:08,548 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:12:08,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:12:08,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:12:08,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:12:08,967 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:12:08,968 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:12:08,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/diamond_2-2.c [2020-10-27 20:12:09,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed5a23d9f/89a0f301605045e08b6bc5172e9b4796/FLAGe9fab77fb [2020-10-27 20:12:09,663 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:12:09,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/diamond_2-2.c [2020-10-27 20:12:09,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed5a23d9f/89a0f301605045e08b6bc5172e9b4796/FLAGe9fab77fb [2020-10-27 20:12:10,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed5a23d9f/89a0f301605045e08b6bc5172e9b4796 [2020-10-27 20:12:10,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:12:10,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:12:10,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:12:10,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:12:10,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:12:10,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:12:10" (1/1) ... [2020-10-27 20:12:10,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39de5959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:10, skipping insertion in model container [2020-10-27 20:12:10,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:12:10" (1/1) ... [2020-10-27 20:12:10,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:12:10,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:12:10,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:12:10,360 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:12:10,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:12:10,402 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:12:10,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:10 WrapperNode [2020-10-27 20:12:10,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:12:10,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:12:10,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:12:10,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:12:10,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:10" (1/1) ... [2020-10-27 20:12:10,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:10" (1/1) ... [2020-10-27 20:12:10,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:10" (1/1) ... [2020-10-27 20:12:10,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:10" (1/1) ... [2020-10-27 20:12:10,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:10" (1/1) ... [2020-10-27 20:12:10,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:10" (1/1) ... [2020-10-27 20:12:10,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:10" (1/1) ... [2020-10-27 20:12:10,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:12:10,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:12:10,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:12:10,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:12:10,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:12:10,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:12:10,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:12:10,594 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:12:10,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:12:10,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:12:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:12:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:12:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:12:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:12:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 20:12:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:12:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:12:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:12:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:12:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:12:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:12:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:12:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:12:11,149 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:12:11,150 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 20:12:11,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:12:11 BoogieIcfgContainer [2020-10-27 20:12:11,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:12:11,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:12:11,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:12:11,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:12:11,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:12:10" (1/3) ... [2020-10-27 20:12:11,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727a0d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:12:11, skipping insertion in model container [2020-10-27 20:12:11,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:10" (2/3) ... [2020-10-27 20:12:11,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727a0d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:12:11, skipping insertion in model container [2020-10-27 20:12:11,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:12:11" (3/3) ... [2020-10-27 20:12:11,162 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-2.c [2020-10-27 20:12:11,232 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:12:11,242 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:12:11,257 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:12:11,285 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:12:11,285 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:12:11,285 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:12:11,285 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:12:11,285 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:12:11,285 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:12:11,286 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:12:11,286 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:12:11,303 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-27 20:12:11,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 20:12:11,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:12:11,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:12:11,310 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:12:11,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:12:11,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1511546603, now seen corresponding path program 1 times [2020-10-27 20:12:11,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:12:11,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332193703] [2020-10-27 20:12:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:12:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:11,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:11,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:11,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:12:11,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:12:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 20:12:11,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:12:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:12:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:12:11,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:12:11,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:12:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:11,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:11,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:11,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:12:11,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:12:11,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 20:12:11,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:11,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:12:11,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:12:11,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:12:11,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:12:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:12:11,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332193703] [2020-10-27 20:12:11,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:12:11,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 20:12:11,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560663131] [2020-10-27 20:12:11,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 20:12:11,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:12:11,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 20:12:11,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:12:11,707 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-27 20:12:11,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:12:11,783 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-10-27 20:12:11,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:12:11,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-27 20:12:11,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:12:11,793 INFO L225 Difference]: With dead ends: 44 [2020-10-27 20:12:11,794 INFO L226 Difference]: Without dead ends: 23 [2020-10-27 20:12:11,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:12:11,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-27 20:12:11,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-27 20:12:11,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 20:12:11,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2020-10-27 20:12:11,843 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 12 [2020-10-27 20:12:11,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:12:11,844 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2020-10-27 20:12:11,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 20:12:11,844 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2020-10-27 20:12:11,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 20:12:11,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:12:11,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:12:11,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:12:11,846 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:12:11,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:12:11,847 INFO L82 PathProgramCache]: Analyzing trace with hash 951155029, now seen corresponding path program 1 times [2020-10-27 20:12:11,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:12:11,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334783315] [2020-10-27 20:12:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:12:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:11,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:12,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:12:12,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:12:12,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 20:12:12,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:12:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:12:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:12:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:12:12,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:12:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:12,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:12,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:12:12,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:12:12,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:12:12,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:12:12,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:12:12,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:12:12,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:12:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:12:12,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334783315] [2020-10-27 20:12:12,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:12:12,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:12:12,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292647975] [2020-10-27 20:12:12,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:12:12,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:12:12,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:12:12,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:12:12,129 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand 4 states. [2020-10-27 20:12:12,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:12:12,280 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2020-10-27 20:12:12,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:12:12,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-27 20:12:12,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:12:12,283 INFO L225 Difference]: With dead ends: 31 [2020-10-27 20:12:12,283 INFO L226 Difference]: Without dead ends: 25 [2020-10-27 20:12:12,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:12:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-27 20:12:12,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-27 20:12:12,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-27 20:12:12,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2020-10-27 20:12:12,295 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 12 [2020-10-27 20:12:12,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:12:12,295 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2020-10-27 20:12:12,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:12:12,295 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2020-10-27 20:12:12,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 20:12:12,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:12:12,297 INFO L422 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] [2020-10-27 20:12:12,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:12:12,297 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:12:12,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:12:12,298 INFO L82 PathProgramCache]: Analyzing trace with hash -310557545, now seen corresponding path program 1 times [2020-10-27 20:12:12,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:12:12,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011893817] [2020-10-27 20:12:12,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:12:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:12,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:12,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:13,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:13,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 20:12:13,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 20:12:13,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-27 20:12:13,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:13,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:12:13,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 20:12:13,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:12:13,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:12:13,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:12:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:13,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:13,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:13,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:12:13,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:12:13,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:12:13,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:13,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:12:13,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:12:13,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:12:13,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:12:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:12:13,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011893817] [2020-10-27 20:12:13,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:12:13,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:12:13,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957790574] [2020-10-27 20:12:13,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:12:13,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:12:13,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:12:13,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:12:13,110 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 4 states. [2020-10-27 20:12:13,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:12:13,373 INFO L93 Difference]: Finished difference Result 53 states and 84 transitions. [2020-10-27 20:12:13,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:12:13,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 20:12:13,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:12:13,375 INFO L225 Difference]: With dead ends: 53 [2020-10-27 20:12:13,375 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 20:12:13,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:12:13,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 20:12:13,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-27 20:12:13,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 20:12:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2020-10-27 20:12:13,386 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 23 [2020-10-27 20:12:13,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:12:13,386 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2020-10-27 20:12:13,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:12:13,386 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2020-10-27 20:12:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 20:12:13,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:12:13,387 INFO L422 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] [2020-10-27 20:12:13,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:12:13,388 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:12:13,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:12:13,389 INFO L82 PathProgramCache]: Analyzing trace with hash -167075749, now seen corresponding path program 1 times [2020-10-27 20:12:13,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:12:13,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724008193] [2020-10-27 20:12:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:12:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:13,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:13,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:13,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 20:12:13,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:12:13,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-27 20:12:13,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 20:12:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:12:13,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 20:12:13,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:12:14,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:12:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:14,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:14,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:14,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:12:14,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:12:14,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:12:14,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:12:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:12:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:12:14,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:12:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:12:14,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724008193] [2020-10-27 20:12:14,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:12:14,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 20:12:14,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109450592] [2020-10-27 20:12:14,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 20:12:14,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:12:14,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 20:12:14,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:12:14,118 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand 13 states. [2020-10-27 20:12:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:12:14,975 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2020-10-27 20:12:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 20:12:14,976 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2020-10-27 20:12:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:12:14,977 INFO L225 Difference]: With dead ends: 53 [2020-10-27 20:12:14,977 INFO L226 Difference]: Without dead ends: 47 [2020-10-27 20:12:14,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2020-10-27 20:12:14,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-27 20:12:14,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-27 20:12:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 20:12:14,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2020-10-27 20:12:14,988 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 23 [2020-10-27 20:12:14,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:12:14,988 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2020-10-27 20:12:14,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 20:12:14,988 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2020-10-27 20:12:14,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 20:12:14,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:12:14,990 INFO L422 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] [2020-10-27 20:12:14,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:12:14,990 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:12:14,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:12:14,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1809449125, now seen corresponding path program 1 times [2020-10-27 20:12:14,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:12:14,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437262449] [2020-10-27 20:12:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:12:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:15,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:15,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 20:12:15,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 20:12:15,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-27 20:12:15,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:15,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:12:15,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 20:12:15,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 20:12:15,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:12:15,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:12:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:15,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:15,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:12:15,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:12:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:12:15,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:12:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:12:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:12:15,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:12:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:12:15,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437262449] [2020-10-27 20:12:15,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:12:15,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:12:15,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419169568] [2020-10-27 20:12:15,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:12:15,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:12:15,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:12:15,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:12:15,405 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 4 states. [2020-10-27 20:12:15,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:12:15,584 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-10-27 20:12:15,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:12:15,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 20:12:15,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:12:15,585 INFO L225 Difference]: With dead ends: 64 [2020-10-27 20:12:15,585 INFO L226 Difference]: Without dead ends: 47 [2020-10-27 20:12:15,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:12:15,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-27 20:12:15,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-27 20:12:15,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 20:12:15,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-27 20:12:15,599 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 23 [2020-10-27 20:12:15,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:12:15,600 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-27 20:12:15,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:12:15,600 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-27 20:12:15,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 20:12:15,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:12:15,605 INFO L422 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] [2020-10-27 20:12:15,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:12:15,605 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:12:15,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:12:15,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1519857435, now seen corresponding path program 1 times [2020-10-27 20:12:15,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:12:15,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562958976] [2020-10-27 20:12:15,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:12:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:15,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:15,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:16,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:16,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 20:12:16,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:12:16,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-27 20:12:16,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:16,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 20:12:16,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:12:16,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 20:12:16,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:12:16,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:12:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:16,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:16,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:16,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:12:16,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:12:16,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:12:16,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:12:16,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:12:16,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:12:16,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:12:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:12:16,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562958976] [2020-10-27 20:12:16,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:12:16,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 20:12:16,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140471663] [2020-10-27 20:12:16,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:12:16,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:12:16,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:12:16,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:12:16,342 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 10 states. [2020-10-27 20:12:17,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:12:17,142 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-10-27 20:12:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:12:17,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-27 20:12:17,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:12:17,144 INFO L225 Difference]: With dead ends: 55 [2020-10-27 20:12:17,144 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 20:12:17,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-27 20:12:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 20:12:17,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-27 20:12:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 20:12:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-10-27 20:12:17,155 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 23 [2020-10-27 20:12:17,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:12:17,156 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-10-27 20:12:17,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:12:17,156 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-10-27 20:12:17,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 20:12:17,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:12:17,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:12:17,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:12:17,158 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:12:17,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:12:17,158 INFO L82 PathProgramCache]: Analyzing trace with hash -714278507, now seen corresponding path program 2 times [2020-10-27 20:12:17,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:12:17,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899137869] [2020-10-27 20:12:17,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:12:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:17,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:17,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 20:12:17,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:12:17,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-27 20:12:17,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 20:12:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:12:17,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 20:12:17,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:12:17,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:12:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:12:17,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:12:17,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:12:17,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:12:17,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:12:17,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:12:17,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:12:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:12:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:12:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:12:17,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:12:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:12:17,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899137869] [2020-10-27 20:12:17,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:12:17,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 20:12:17,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295174853] [2020-10-27 20:12:17,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:12:17,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:12:17,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:12:17,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:12:17,687 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 9 states. [2020-10-27 20:12:17,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:12:17,997 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-10-27 20:12:17,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:12:17,997 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-27 20:12:17,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:12:17,997 INFO L225 Difference]: With dead ends: 35 [2020-10-27 20:12:17,997 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 20:12:17,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:12:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 20:12:17,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 20:12:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 20:12:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 20:12:17,999 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-10-27 20:12:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:12:17,999 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 20:12:17,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:12:18,000 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 20:12:18,000 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 20:12:18,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:12:18,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 20:12:18,238 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2020-10-27 20:12:18,343 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 20:12:18,344 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 20:12:18,344 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 20:12:18,344 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 20:12:18,344 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:12:18,345 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 20:12:18,345 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:12:18,345 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:12:18,345 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 20:12:18,345 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 20:12:18,345 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:12:18,345 INFO L274 CegarLoopResult]: For program point L27-1(lines 17 47) no Hoare annotation was computed. [2020-10-27 20:12:18,345 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 50) no Hoare annotation was computed. [2020-10-27 20:12:18,346 INFO L274 CegarLoopResult]: For program point L36-1(lines 17 47) no Hoare annotation was computed. [2020-10-27 20:12:18,346 INFO L274 CegarLoopResult]: For program point L24-1(lines 17 47) no Hoare annotation was computed. [2020-10-27 20:12:18,348 INFO L270 CegarLoopResult]: At program point L45-1(lines 17 47) the Hoare annotation is: (let ((.cse0 (div main_~y~0 2))) (or (and (= main_~y~0 (* .cse0 2)) (<= (+ main_~x~0 2) (* 2 (div (+ main_~x~0 main_~y~0 (* .cse0 (- 2)) 2) 2)))) (and (<= 0 main_~x~0) (<= main_~x~0 0)) (let ((.cse1 (+ main_~x~0 5))) (and (<= 0 .cse1) (<= .cse1 0) (<= (+ main_~x~0 (* 2 .cse0)) (+ (* 2 (div main_~x~0 2)) main_~y~0)))))) [2020-10-27 20:12:18,348 INFO L274 CegarLoopResult]: For program point L33-1(lines 17 47) no Hoare annotation was computed. [2020-10-27 20:12:18,348 INFO L274 CegarLoopResult]: For program point L21-1(lines 17 47) no Hoare annotation was computed. [2020-10-27 20:12:18,349 INFO L270 CegarLoopResult]: At program point L17-2(lines 17 47) the Hoare annotation is: (let ((.cse1 (div main_~y~0 2))) (let ((.cse0 (* 2 .cse1))) (or (and (<= main_~y~0 .cse0) (<= (+ main_~x~0 2) (* 2 (div (+ main_~x~0 main_~y~0 (* .cse1 (- 2)) 2) 2)))) (let ((.cse3 (* 2 (div main_~x~0 2))) (.cse2 (+ main_~x~0 .cse0))) (and (< .cse2 (+ .cse3 main_~y~0 1)) (<= (+ .cse3 main_~y~0) .cse2) (<= (+ main_~x~0 5) 0)))))) [2020-10-27 20:12:18,349 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 13 50) no Hoare annotation was computed. [2020-10-27 20:12:18,349 INFO L274 CegarLoopResult]: For program point L42-1(lines 17 47) no Hoare annotation was computed. [2020-10-27 20:12:18,350 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 13 50) the Hoare annotation is: true [2020-10-27 20:12:18,350 INFO L274 CegarLoopResult]: For program point L30-1(lines 17 47) no Hoare annotation was computed. [2020-10-27 20:12:18,350 INFO L274 CegarLoopResult]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-10-27 20:12:18,350 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 47) no Hoare annotation was computed. [2020-10-27 20:12:18,350 INFO L274 CegarLoopResult]: For program point L39-1(lines 17 47) no Hoare annotation was computed. [2020-10-27 20:12:18,350 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-27 20:12:18,350 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-27 20:12:18,350 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-27 20:12:18,350 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-27 20:12:18,351 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-10-27 20:12:18,351 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-27 20:12:18,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:12:18 BoogieIcfgContainer [2020-10-27 20:12:18,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:12:18,382 INFO L168 Benchmark]: Toolchain (without parser) took 8317.23 ms. Allocated memory was 160.4 MB in the beginning and 235.9 MB in the end (delta: 75.5 MB). Free memory was 134.9 MB in the beginning and 197.2 MB in the end (delta: -62.3 MB). Peak memory consumption was 129.8 MB. Max. memory is 8.0 GB. [2020-10-27 20:12:18,388 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 160.4 MB. Free memory was 131.6 MB in the beginning and 131.5 MB in the end (delta: 102.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:12:18,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.15 ms. Allocated memory is still 160.4 MB. Free memory was 134.2 MB in the beginning and 124.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:12:18,391 INFO L168 Benchmark]: Boogie Preprocessor took 75.68 ms. Allocated memory is still 160.4 MB. Free memory was 124.6 MB in the beginning and 122.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:12:18,391 INFO L168 Benchmark]: RCFGBuilder took 668.00 ms. Allocated memory is still 160.4 MB. Free memory was 122.9 MB in the beginning and 106.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-27 20:12:18,392 INFO L168 Benchmark]: TraceAbstraction took 7224.82 ms. Allocated memory was 160.4 MB in the beginning and 235.9 MB in the end (delta: 75.5 MB). Free memory was 106.4 MB in the beginning and 197.2 MB in the end (delta: -90.8 MB). Peak memory consumption was 101.5 MB. Max. memory is 8.0 GB. [2020-10-27 20:12:18,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 160.4 MB. Free memory was 131.6 MB in the beginning and 131.5 MB in the end (delta: 102.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 331.15 ms. Allocated memory is still 160.4 MB. Free memory was 134.2 MB in the beginning and 124.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.68 ms. Allocated memory is still 160.4 MB. Free memory was 124.6 MB in the beginning and 122.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 668.00 ms. Allocated memory is still 160.4 MB. Free memory was 122.9 MB in the beginning and 106.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7224.82 ms. Allocated memory was 160.4 MB in the beginning and 235.9 MB in the end (delta: 75.5 MB). Free memory was 106.4 MB in the beginning and 197.2 MB in the end (delta: -90.8 MB). Peak memory consumption was 101.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((y == y / 2 * 2 && x + 2 <= 2 * ((x + y + y / 2 * -2 + 2) / 2)) || (0 <= x && x <= 0)) || ((0 <= x + 5 && x + 5 <= 0) && x + 2 * (y / 2) <= 2 * (x / 2) + y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 198 SDslu, 157 SDs, 0 SdLazy, 690 SolverSat, 133 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 27 PreInvPairs, 32 NumberOfFragments, 162 HoareAnnotationTreeSize, 27 FomulaSimplifications, 283 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 271 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 21945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 14/17 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...