/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/float-benchs/drift_tenth.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:38:54,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:38:54,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:38:54,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:38:54,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:38:54,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:38:54,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:38:54,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:38:54,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:38:54,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:38:54,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:38:54,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:38:54,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:38:54,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:38:54,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:38:54,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:38:54,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:38:54,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:38:54,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:38:54,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:38:54,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:38:54,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:38:54,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:38:54,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:38:54,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:38:54,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:38:54,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:38:54,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:38:54,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:38:54,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:38:54,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:38:54,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:38:54,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:38:54,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:38:54,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:38:54,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:38:54,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:38:54,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:38:54,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:38:54,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:38:54,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:38:54,376 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 19:38:54,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:38:54,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:38:54,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:38:54,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:38:54,405 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:38:54,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:38:54,406 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:38:54,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:38:54,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:38:54,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:38:54,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:38:54,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:38:54,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:38:54,407 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:38:54,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:38:54,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:38:54,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:38:54,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:38:54,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:38:54,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:38:54,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:38:54,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:38:54,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:38:54,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:38:54,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:38:54,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:38:54,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:38:54,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:38:54,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:38:54,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:38:54,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:38:54,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:38:54,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:38:54,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:38:54,863 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:38:54,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/drift_tenth.c [2020-10-27 19:38:54,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a83871c97/17c13a6b3f5d4d8dbbc65a6cdcd276bb/FLAG3b65fb01e [2020-10-27 19:38:55,588 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:38:55,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/drift_tenth.c [2020-10-27 19:38:55,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a83871c97/17c13a6b3f5d4d8dbbc65a6cdcd276bb/FLAG3b65fb01e [2020-10-27 19:38:55,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a83871c97/17c13a6b3f5d4d8dbbc65a6cdcd276bb [2020-10-27 19:38:55,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:38:55,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:38:55,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:38:55,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:38:55,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:38:55,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:38:55" (1/1) ... [2020-10-27 19:38:55,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea5aa11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:38:55, skipping insertion in model container [2020-10-27 19:38:55,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:38:55" (1/1) ... [2020-10-27 19:38:55,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:38:55,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:38:56,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:38:56,178 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:38:56,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:38:56,212 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:38:56,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:38:56 WrapperNode [2020-10-27 19:38:56,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:38:56,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:38:56,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:38:56,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:38:56,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:38:56" (1/1) ... [2020-10-27 19:38:56,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:38:56" (1/1) ... [2020-10-27 19:38:56,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:38:56" (1/1) ... [2020-10-27 19:38:56,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:38:56" (1/1) ... [2020-10-27 19:38:56,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:38:56" (1/1) ... [2020-10-27 19:38:56,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:38:56" (1/1) ... [2020-10-27 19:38:56,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:38:56" (1/1) ... [2020-10-27 19:38:56,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:38:56,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:38:56,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:38:56,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:38:56,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:38:56" (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 19:38:56,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:38:56,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:38:56,336 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:38:56,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 19:38:56,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:38:56,337 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:38:56,337 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:38:56,337 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:38:56,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:38:56,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 19:38:56,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:38:56,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:38:56,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:38:56,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:38:56,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:38:56,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:38:56,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:38:56,653 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:38:56,653 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:38:56,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:38:56 BoogieIcfgContainer [2020-10-27 19:38:56,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:38:56,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:38:56,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:38:56,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:38:56,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:38:55" (1/3) ... [2020-10-27 19:38:56,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a615fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:38:56, skipping insertion in model container [2020-10-27 19:38:56,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:38:56" (2/3) ... [2020-10-27 19:38:56,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a615fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:38:56, skipping insertion in model container [2020-10-27 19:38:56,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:38:56" (3/3) ... [2020-10-27 19:38:56,666 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2020-10-27 19:38:56,679 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:38:56,684 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:38:56,699 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:38:56,729 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:38:56,729 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:38:56,729 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:38:56,729 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:38:56,730 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:38:56,730 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:38:56,730 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:38:56,730 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:38:56,748 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-27 19:38:56,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 19:38:56,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:38:56,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:38:56,755 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:38:56,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:38:56,762 INFO L82 PathProgramCache]: Analyzing trace with hash 943003376, now seen corresponding path program 1 times [2020-10-27 19:38:56,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:38:56,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625444267] [2020-10-27 19:38:56,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:38:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:38:56,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:38:57,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:38:57,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 19:38:57,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:38:57,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 19:38:57,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:38:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:38:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 19:38:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:38:57,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 19:38:57,296 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-27 19:38:57,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:38:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:38:57,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:38:57,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:38:57,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:38:57,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:38:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 19:38:57,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:38:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:38:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:38:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:38:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:38:57,335 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 19:38:57,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625444267] [2020-10-27 19:38:57,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:38:57,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 19:38:57,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194259671] [2020-10-27 19:38:57,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 19:38:57,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:38:57,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 19:38:57,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 19:38:57,367 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-10-27 19:38:57,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:38:57,441 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-10-27 19:38:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:38:57,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-27 19:38:57,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:38:57,451 INFO L225 Difference]: With dead ends: 37 [2020-10-27 19:38:57,452 INFO L226 Difference]: Without dead ends: 14 [2020-10-27 19:38:57,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 19:38:57,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-27 19:38:57,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-27 19:38:57,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-27 19:38:57,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-27 19:38:57,501 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-10-27 19:38:57,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:38:57,501 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-27 19:38:57,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 19:38:57,502 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-27 19:38:57,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 19:38:57,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:38:57,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:38:57,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:38:57,503 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:38:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:38:57,504 INFO L82 PathProgramCache]: Analyzing trace with hash 771228470, now seen corresponding path program 1 times [2020-10-27 19:38:57,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:38:57,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573782323] [2020-10-27 19:38:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:38:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:38:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:38:57,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:38:57,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 19:38:57,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:38:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 19:38:57,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:38:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:38:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:38:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:38:57,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:38:57,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:38:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:38:57,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:38:57,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:38:57,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:38:57,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:38:57,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:38:57,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:38:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:38:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:38:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:38:57,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:38:57,708 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 19:38:57,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573782323] [2020-10-27 19:38:57,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:38:57,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:38:57,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881816075] [2020-10-27 19:38:57,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:38:57,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:38:57,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:38:57,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:38:57,713 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2020-10-27 19:38:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:38:57,840 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-27 19:38:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 19:38:57,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-27 19:38:57,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:38:57,842 INFO L225 Difference]: With dead ends: 22 [2020-10-27 19:38:57,842 INFO L226 Difference]: Without dead ends: 16 [2020-10-27 19:38:57,843 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 19:38:57,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-27 19:38:57,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-27 19:38:57,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-27 19:38:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-27 19:38:57,853 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2020-10-27 19:38:57,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:38:57,853 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-27 19:38:57,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:38:57,854 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-27 19:38:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 19:38:57,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:38:57,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:38:57,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:38:57,855 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:38:57,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:38:57,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1042690312, now seen corresponding path program 1 times [2020-10-27 19:38:57,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:38:57,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565835937] [2020-10-27 19:38:57,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:38:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:38:57,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:38:58,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:38:58,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 19:38:58,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:38:58,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 19:38:58,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:38:58,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:38:58,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:38:58,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 19:38:58,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:38:58,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:38:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:38:58,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:38:58,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:38:58,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:38:58,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:38:58,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:38:58,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:38:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:38:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:38:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:38:58,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:38:58,148 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 19:38:58,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565835937] [2020-10-27 19:38:58,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:38:58,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:38:58,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578232583] [2020-10-27 19:38:58,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:38:58,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:38:58,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:38:58,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:38:58,153 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2020-10-27 19:38:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:38:58,342 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-27 19:38:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:38:58,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-27 19:38:58,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:38:58,344 INFO L225 Difference]: With dead ends: 24 [2020-10-27 19:38:58,344 INFO L226 Difference]: Without dead ends: 18 [2020-10-27 19:38:58,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:38:58,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-27 19:38:58,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-27 19:38:58,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-27 19:38:58,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-27 19:38:58,354 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-10-27 19:38:58,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:38:58,354 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-27 19:38:58,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:38:58,355 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-27 19:38:58,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 19:38:58,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:38:58,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:38:58,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:38:58,356 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:38:58,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:38:58,357 INFO L82 PathProgramCache]: Analyzing trace with hash -461917638, now seen corresponding path program 2 times [2020-10-27 19:38:58,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:38:58,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769885375] [2020-10-27 19:38:58,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:38:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:38:58,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:38:58,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:38:58,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 19:38:58,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:38:58,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 19:38:58,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:38:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:38:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:38:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:38:58,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:38:58,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:38:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:38:58,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:38:58,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:38:58,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:38:58,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:38:58,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:38:58,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:38:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:38:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:38:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:38:58,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:38:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:38:58,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769885375] [2020-10-27 19:38:58,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:38:58,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:38:58,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843877949] [2020-10-27 19:38:58,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:38:58,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:38:58,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:38:58,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:38:58,675 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2020-10-27 19:38:58,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:38:58,906 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-10-27 19:38:58,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 19:38:58,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-27 19:38:58,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:38:58,907 INFO L225 Difference]: With dead ends: 26 [2020-10-27 19:38:58,908 INFO L226 Difference]: Without dead ends: 20 [2020-10-27 19:38:58,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:38:58,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-27 19:38:58,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-10-27 19:38:58,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-27 19:38:58,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-27 19:38:58,914 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-10-27 19:38:58,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:38:58,915 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-27 19:38:58,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:38:58,915 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-27 19:38:58,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 19:38:58,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:38:58,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:38:58,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:38:58,916 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:38:58,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:38:58,917 INFO L82 PathProgramCache]: Analyzing trace with hash -685126404, now seen corresponding path program 3 times [2020-10-27 19:38:58,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:38:58,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955509169] [2020-10-27 19:38:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:38:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:38:58,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:38:58,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:38:58,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 19:38:58,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:38:58,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 19:38:58,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:38:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:38:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:38:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:38:58,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:38:59,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:38:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:38:59,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:38:59,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:38:59,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:38:59,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:38:59,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:38:59,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:38:59,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:38:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:38:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:38:59,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:38:59,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:38:59,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955509169] [2020-10-27 19:38:59,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:38:59,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:38:59,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42280066] [2020-10-27 19:38:59,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:38:59,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:38:59,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:38:59,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:38:59,115 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-10-27 19:38:59,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:38:59,412 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-10-27 19:38:59,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:38:59,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-27 19:38:59,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:38:59,414 INFO L225 Difference]: With dead ends: 28 [2020-10-27 19:38:59,414 INFO L226 Difference]: Without dead ends: 22 [2020-10-27 19:38:59,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:38:59,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-27 19:38:59,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-27 19:38:59,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-27 19:38:59,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-27 19:38:59,422 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-10-27 19:38:59,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:38:59,422 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-27 19:38:59,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:38:59,423 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-27 19:38:59,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 19:38:59,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:38:59,424 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:38:59,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:38:59,424 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:38:59,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:38:59,425 INFO L82 PathProgramCache]: Analyzing trace with hash -440385730, now seen corresponding path program 4 times [2020-10-27 19:38:59,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:38:59,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315294695] [2020-10-27 19:38:59,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:38:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:38:59,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:38:59,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:38:59,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 19:38:59,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:38:59,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 19:38:59,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:38:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:38:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:38:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 19:38:59,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:38:59,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:38:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:38:59,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:38:59,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:38:59,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:38:59,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:38:59,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:38:59,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:38:59,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:38:59,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:38:59,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:38:59,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:38:59,645 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:38:59,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315294695] [2020-10-27 19:38:59,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:38:59,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 19:38:59,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876862757] [2020-10-27 19:38:59,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:38:59,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:38:59,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:38:59,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:38:59,648 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2020-10-27 19:38:59,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:38:59,878 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-10-27 19:38:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 19:38:59,879 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-27 19:38:59,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:38:59,880 INFO L225 Difference]: With dead ends: 30 [2020-10-27 19:38:59,880 INFO L226 Difference]: Without dead ends: 24 [2020-10-27 19:38:59,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 19:38:59,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-27 19:38:59,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-27 19:38:59,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 19:38:59,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-10-27 19:38:59,888 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-10-27 19:38:59,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:38:59,888 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-10-27 19:38:59,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:38:59,888 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-10-27 19:38:59,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 19:38:59,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:38:59,889 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:38:59,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:38:59,890 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:38:59,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:38:59,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1467799296, now seen corresponding path program 5 times [2020-10-27 19:38:59,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:38:59,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41397286] [2020-10-27 19:38:59,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:38:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:38:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:00,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:39:00,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 19:39:00,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:39:00,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 19:39:00,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:39:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:39:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:39:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 19:39:00,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:39:00,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:39:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:39:00,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:00,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:39:00,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:39:00,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:39:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:39:00,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:39:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:39:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:39:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:39:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:39:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:39:00,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41397286] [2020-10-27 19:39:00,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:39:00,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 19:39:00,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855940948] [2020-10-27 19:39:00,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 19:39:00,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:39:00,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 19:39:00,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:39:00,102 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2020-10-27 19:39:00,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:39:00,408 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-10-27 19:39:00,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:39:00,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-27 19:39:00,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:39:00,412 INFO L225 Difference]: With dead ends: 32 [2020-10-27 19:39:00,413 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 19:39:00,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-27 19:39:00,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 19:39:00,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-27 19:39:00,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-27 19:39:00,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-27 19:39:00,426 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-10-27 19:39:00,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:39:00,427 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-27 19:39:00,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 19:39:00,427 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-27 19:39:00,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 19:39:00,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:39:00,429 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:39:00,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:39:00,430 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:39:00,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:39:00,430 INFO L82 PathProgramCache]: Analyzing trace with hash -969758142, now seen corresponding path program 6 times [2020-10-27 19:39:00,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:39:00,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772743737] [2020-10-27 19:39:00,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:39:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:39:00,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:00,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:39:00,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:39:00,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:39:00,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 19:39:00,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:39:00,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:39:00,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:39:00,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 19:39:00,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:39:00,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:39:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:39:00,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:00,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:39:00,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:39:00,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:39:00,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:39:00,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:39:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:39:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:39:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:39:00,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:39:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:39:00,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772743737] [2020-10-27 19:39:00,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:39:00,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 19:39:00,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851845779] [2020-10-27 19:39:00,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 19:39:00,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:39:00,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 19:39:00,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 19:39:00,714 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 10 states. [2020-10-27 19:39:01,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:39:01,066 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-10-27 19:39:01,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:39:01,067 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-27 19:39:01,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:39:01,069 INFO L225 Difference]: With dead ends: 34 [2020-10-27 19:39:01,069 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 19:39:01,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-27 19:39:01,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 19:39:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-27 19:39:01,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 19:39:01,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-10-27 19:39:01,080 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-10-27 19:39:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:39:01,080 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-10-27 19:39:01,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 19:39:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-10-27 19:39:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 19:39:01,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:39:01,081 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:39:01,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:39:01,082 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:39:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:39:01,082 INFO L82 PathProgramCache]: Analyzing trace with hash 906420996, now seen corresponding path program 7 times [2020-10-27 19:39:01,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:39:01,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715612184] [2020-10-27 19:39:01,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:39:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:39:01,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:01,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:39:01,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 19:39:01,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:39:01,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 19:39:01,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:39:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 19:39:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:39:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:39:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:39:01,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:39:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:39:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:01,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:39:01,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:39:01,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:39:01,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:39:01,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:39:01,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:39:01,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:39:01,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:39:01,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:39:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:39:01,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715612184] [2020-10-27 19:39:01,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:39:01,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 19:39:01,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140613597] [2020-10-27 19:39:01,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 19:39:01,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:39:01,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 19:39:01,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:39:01,341 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 11 states. [2020-10-27 19:39:01,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:39:01,726 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-10-27 19:39:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:39:01,727 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-27 19:39:01,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:39:01,728 INFO L225 Difference]: With dead ends: 36 [2020-10-27 19:39:01,728 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 19:39:01,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-27 19:39:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 19:39:01,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-27 19:39:01,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 19:39:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-10-27 19:39:01,735 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2020-10-27 19:39:01,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:39:01,736 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-10-27 19:39:01,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 19:39:01,736 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-10-27 19:39:01,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 19:39:01,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:39:01,737 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:39:01,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:39:01,738 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:39:01,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:39:01,738 INFO L82 PathProgramCache]: Analyzing trace with hash 28308294, now seen corresponding path program 8 times [2020-10-27 19:39:01,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:39:01,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608364126] [2020-10-27 19:39:01,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:39:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:39:01,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:01,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:39:01,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 19:39:01,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:39:01,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 19:39:01,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:39:01,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:39:01,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:39:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 19:39:01,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:39:02,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:39:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:39:02,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:02,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:39:02,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:39:02,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:39:02,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:39:02,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:39:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:39:02,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:39:02,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:39:02,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:39:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:39:02,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608364126] [2020-10-27 19:39:02,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:39:02,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 19:39:02,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723280149] [2020-10-27 19:39:02,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 19:39:02,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:39:02,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 19:39:02,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:39:02,037 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 12 states. [2020-10-27 19:39:02,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:39:02,461 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-10-27 19:39:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 19:39:02,462 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-10-27 19:39:02,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:39:02,463 INFO L225 Difference]: With dead ends: 38 [2020-10-27 19:39:02,463 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 19:39:02,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-27 19:39:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 19:39:02,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-27 19:39:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 19:39:02,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-10-27 19:39:02,472 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2020-10-27 19:39:02,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:39:02,473 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-10-27 19:39:02,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 19:39:02,473 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-10-27 19:39:02,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 19:39:02,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:39:02,474 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:39:02,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:39:02,475 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:39:02,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:39:02,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2024408312, now seen corresponding path program 9 times [2020-10-27 19:39:02,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:39:02,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462342886] [2020-10-27 19:39:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:39:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:39:02,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:02,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:39:02,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 19:39:02,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:39:02,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 19:39:02,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:39:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 19:39:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:39:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 19:39:02,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:39:02,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:39:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:39:02,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:39:02,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:39:02,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:39:02,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:39:02,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:39:02,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:39:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:39:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:39:02,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:39:02,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:39:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:39:02,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462342886] [2020-10-27 19:39:02,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:39:02,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 19:39:02,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894301191] [2020-10-27 19:39:02,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 19:39:02,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:39:02,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 19:39:02,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 19:39:02,790 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 13 states. [2020-10-27 19:39:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:39:03,293 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-10-27 19:39:03,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 19:39:03,294 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-10-27 19:39:03,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:39:03,294 INFO L225 Difference]: With dead ends: 39 [2020-10-27 19:39:03,295 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 19:39:03,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-27 19:39:03,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 19:39:03,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-27 19:39:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 19:39:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-10-27 19:39:03,303 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2020-10-27 19:39:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:39:03,303 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-10-27 19:39:03,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 19:39:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-10-27 19:39:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 19:39:03,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:39:03,304 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:39:03,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 19:39:03,305 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:39:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:39:03,305 INFO L82 PathProgramCache]: Analyzing trace with hash 999889482, now seen corresponding path program 10 times [2020-10-27 19:39:03,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:39:03,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314532926] [2020-10-27 19:39:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:39:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:39:03,321 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:39:03,321 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:39:03,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 19:39:03,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:39:03 BoogieIcfgContainer [2020-10-27 19:39:03,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:39:03,344 INFO L168 Benchmark]: Toolchain (without parser) took 7392.97 ms. Allocated memory was 161.5 MB in the beginning and 234.9 MB in the end (delta: 73.4 MB). Free memory was 136.5 MB in the beginning and 147.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 63.2 MB. Max. memory is 8.0 GB. [2020-10-27 19:39:03,345 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 161.5 MB. Free memory was 132.5 MB in the beginning and 132.4 MB in the end (delta: 102.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:39:03,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.95 ms. Allocated memory is still 161.5 MB. Free memory was 135.9 MB in the beginning and 126.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:39:03,346 INFO L168 Benchmark]: Boogie Preprocessor took 44.42 ms. Allocated memory is still 161.5 MB. Free memory was 126.6 MB in the beginning and 125.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:39:03,347 INFO L168 Benchmark]: RCFGBuilder took 396.58 ms. Allocated memory is still 161.5 MB. Free memory was 125.2 MB in the beginning and 112.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:39:03,348 INFO L168 Benchmark]: TraceAbstraction took 6685.44 ms. Allocated memory was 161.5 MB in the beginning and 234.9 MB in the end (delta: 73.4 MB). Free memory was 112.4 MB in the beginning and 147.2 MB in the end (delta: -34.8 MB). Peak memory consumption was 39.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:39:03,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 161.5 MB. Free memory was 132.5 MB in the beginning and 132.4 MB in the end (delta: 102.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 251.95 ms. Allocated memory is still 161.5 MB. Free memory was 135.9 MB in the beginning and 126.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.42 ms. Allocated memory is still 161.5 MB. Free memory was 126.6 MB in the beginning and 125.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 396.58 ms. Allocated memory is still 161.5 MB. Free memory was 125.2 MB in the beginning and 112.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6685.44 ms. Allocated memory was 161.5 MB in the beginning and 234.9 MB in the end (delta: 73.4 MB). Free memory was 112.4 MB in the beginning and 147.2 MB in the end (delta: -34.8 MB). Peak memory consumption was 39.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 15. Possible FailurePath: [L10] float tick = 1.f / 10.f; [L11] float time = 0.f; [L12] int i; [L14] i = 0 [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND FALSE !(i < 10) [L17] CALL __VERIFIER_assert(time != 1.0) [L6] COND TRUE !(cond) [L6] CALL reach_error() [L3] __assert_fail("0", "drift_tenth.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.6s, OverallIterations: 12, TraceHistogramMax: 10, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 129 SDtfs, 190 SDslu, 227 SDs, 0 SdLazy, 323 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 9 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 254 NumberOfCodeBlocks, 254 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 211 ConstructedInterpolants, 0 QuantifiedInterpolants, 15441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 0/285 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...