/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:17:57,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:17:57,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:17:57,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:17:57,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:17:57,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:17:57,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:17:57,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:17:57,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:17:57,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:17:57,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:17:57,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:17:57,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:17:57,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:17:57,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:17:57,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:17:57,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:17:57,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:17:57,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:17:57,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:17:57,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:17:57,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:17:57,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:17:57,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:17:57,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:17:57,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:17:57,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:17:57,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:17:57,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:17:57,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:17:57,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:17:57,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:17:57,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:17:57,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:17:57,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:17:57,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:17:57,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:17:57,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:17:57,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:17:57,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:17:57,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:17:57,366 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 [2020-09-25 10:17:57,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:17:57,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:17:57,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:17:57,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:17:57,418 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:17:57,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:17:57,419 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:17:57,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:17:57,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:17:57,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:17:57,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:17:57,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:17:57,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:17:57,422 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:17:57,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:17:57,422 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:17:57,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:17:57,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:17:57,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:17:57,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:17:57,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:17:57,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:17:57,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:17:57,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:17:57,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:17:57,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:17:57,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:17:57,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:17:57,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:17:57,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:17:57,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:17:57,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:17:57,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:17:57,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:17:57,916 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:17:57,917 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-25 10:17:58,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/382f8dd29/d2d2f2071b104dad965e689394d439fe/FLAG488689941 [2020-09-25 10:17:58,548 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:17:58,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-25 10:17:58,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/382f8dd29/d2d2f2071b104dad965e689394d439fe/FLAG488689941 [2020-09-25 10:17:58,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/382f8dd29/d2d2f2071b104dad965e689394d439fe [2020-09-25 10:17:58,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:17:58,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:17:58,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:17:58,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:17:58,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:17:58,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:17:58" (1/1) ... [2020-09-25 10:17:58,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef6092a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:58, skipping insertion in model container [2020-09-25 10:17:58,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:17:58" (1/1) ... [2020-09-25 10:17:58,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:17:58,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:17:59,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:17:59,195 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:17:59,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:17:59,236 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:17:59,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:59 WrapperNode [2020-09-25 10:17:59,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:17:59,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:17:59,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:17:59,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:17:59,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:59" (1/1) ... [2020-09-25 10:17:59,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:59" (1/1) ... [2020-09-25 10:17:59,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:59" (1/1) ... [2020-09-25 10:17:59,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:59" (1/1) ... [2020-09-25 10:17:59,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:59" (1/1) ... [2020-09-25 10:17:59,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:59" (1/1) ... [2020-09-25 10:17:59,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:59" (1/1) ... [2020-09-25 10:17:59,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:17:59,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:17:59,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:17:59,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:17:59,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:59" (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 [2020-09-25 10:17:59,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:17:59,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:17:59,446 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:17:59,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 10:17:59,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:17:59,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:17:59,446 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:17:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:17:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:17:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:17:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:17:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:17:59,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:17:59,766 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:17:59,766 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 10:17:59,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:17:59 BoogieIcfgContainer [2020-09-25 10:17:59,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:17:59,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:17:59,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:17:59,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:17:59,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:17:58" (1/3) ... [2020-09-25 10:17:59,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec87f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:17:59, skipping insertion in model container [2020-09-25 10:17:59,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:59" (2/3) ... [2020-09-25 10:17:59,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec87f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:17:59, skipping insertion in model container [2020-09-25 10:17:59,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:17:59" (3/3) ... [2020-09-25 10:17:59,782 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-09-25 10:17:59,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:17:59,801 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:17:59,823 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:17:59,855 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:17:59,855 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:17:59,855 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:17:59,855 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:17:59,855 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:17:59,856 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:17:59,856 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:17:59,856 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:17:59,878 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-09-25 10:17:59,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 10:17:59,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:59,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:59,887 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:59,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:59,893 INFO L82 PathProgramCache]: Analyzing trace with hash 2127483765, now seen corresponding path program 1 times [2020-09-25 10:17:59,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:59,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205155910] [2020-09-25 10:17:59,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:00,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:00,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:00,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:18:00,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:00,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 10:18:00,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:00,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:18:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:18:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:18:00,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:18:00,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:00,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:00,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:00,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:00,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:00,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:18:00,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:00,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:00,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:00,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:00,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205155910] [2020-09-25 10:18:00,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:18:00,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:18:00,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465409104] [2020-09-25 10:18:00,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:18:00,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:00,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:18:00,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:18:00,426 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 5 states. [2020-09-25 10:18:00,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:00,560 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-09-25 10:18:00,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:18:00,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-25 10:18:00,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:00,573 INFO L225 Difference]: With dead ends: 89 [2020-09-25 10:18:00,574 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 10:18:00,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:18:00,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 10:18:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 10:18:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 10:18:00,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-25 10:18:00,628 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2020-09-25 10:18:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:00,629 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-25 10:18:00,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:18:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-25 10:18:00,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 10:18:00,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:00,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:00,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:18:00,631 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:00,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:00,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1763359327, now seen corresponding path program 1 times [2020-09-25 10:18:00,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:00,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35158282] [2020-09-25 10:18:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:00,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:00,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:00,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:18:00,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:00,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 10:18:00,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:00,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:00,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:18:00,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 10:18:00,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:18:00,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:18:00,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:00,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:00,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:00,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:00,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:00,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:00,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:00,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:00,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:00,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:00,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:00,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35158282] [2020-09-25 10:18:00,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:18:00,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:18:00,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233725708] [2020-09-25 10:18:00,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:18:00,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:00,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:18:00,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:18:00,868 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-09-25 10:18:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:01,036 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-09-25 10:18:01,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:18:01,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 10:18:01,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:01,049 INFO L225 Difference]: With dead ends: 90 [2020-09-25 10:18:01,050 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 10:18:01,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:18:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 10:18:01,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-09-25 10:18:01,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 10:18:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-09-25 10:18:01,077 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2020-09-25 10:18:01,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:01,078 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-09-25 10:18:01,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:18:01,078 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-09-25 10:18:01,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 10:18:01,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:01,079 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:01,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:18:01,081 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:01,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:01,081 INFO L82 PathProgramCache]: Analyzing trace with hash 2139784298, now seen corresponding path program 1 times [2020-09-25 10:18:01,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:01,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120179732] [2020-09-25 10:18:01,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:01,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:01,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:01,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 10:18:01,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:01,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 10:18:01,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:01,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:18:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:18:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:18:01,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:01,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:01,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:01,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:01,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:01,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:01,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:01,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:01,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:18:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:01,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:01,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:01,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:01,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:01,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:18:01,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:01,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:01,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:01,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:01,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:18:01,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:01,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:01,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120179732] [2020-09-25 10:18:01,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:18:01,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:18:01,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502435787] [2020-09-25 10:18:01,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:18:01,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:01,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:18:01,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:18:01,294 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-09-25 10:18:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:01,432 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-09-25 10:18:01,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:18:01,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-09-25 10:18:01,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:01,439 INFO L225 Difference]: With dead ends: 90 [2020-09-25 10:18:01,439 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 10:18:01,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:18:01,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 10:18:01,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-25 10:18:01,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 10:18:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2020-09-25 10:18:01,470 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 32 [2020-09-25 10:18:01,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:01,471 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2020-09-25 10:18:01,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:18:01,471 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2020-09-25 10:18:01,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 10:18:01,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:01,474 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:01,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:18:01,474 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:01,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:01,475 INFO L82 PathProgramCache]: Analyzing trace with hash -268568898, now seen corresponding path program 1 times [2020-09-25 10:18:01,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:01,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275184559] [2020-09-25 10:18:01,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:01,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:01,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:01,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:01,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 10:18:01,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:18:01,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-09-25 10:18:01,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:01,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:01,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:18:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 10:18:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 10:18:01,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:18:02,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:02,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:02,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:02,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:02,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:02,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:02,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:02,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:02,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:02,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:02,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:18:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:02,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:02,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:02,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:02,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:02,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:18:02,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:02,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:18:02,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:02,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275184559] [2020-09-25 10:18:02,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:02,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:18:02,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632649216] [2020-09-25 10:18:02,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:18:02,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:02,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:18:02,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:18:02,085 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 8 states. [2020-09-25 10:18:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:02,396 INFO L93 Difference]: Finished difference Result 146 states and 172 transitions. [2020-09-25 10:18:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:18:02,396 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-25 10:18:02,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:02,400 INFO L225 Difference]: With dead ends: 146 [2020-09-25 10:18:02,400 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 10:18:02,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:18:02,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 10:18:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 93. [2020-09-25 10:18:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 10:18:02,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-09-25 10:18:02,432 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 38 [2020-09-25 10:18:02,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:02,432 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-09-25 10:18:02,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:18:02,435 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-09-25 10:18:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 10:18:02,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:02,436 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:02,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:18:02,437 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:02,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:02,437 INFO L82 PathProgramCache]: Analyzing trace with hash -360550748, now seen corresponding path program 1 times [2020-09-25 10:18:02,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:02,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590906229] [2020-09-25 10:18:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:02,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:02,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:02,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:02,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:03,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:03,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:18:03,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:18:03,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 985 [2020-09-25 10:18:03,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:03,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:18:03,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 10:18:03,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:18:03,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:03,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:03,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:03,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:03,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:03,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:03,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:18:03,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:03,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:03,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:03,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590906229] [2020-09-25 10:18:03,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:03,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:18:03,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531247400] [2020-09-25 10:18:03,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:18:03,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:03,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:18:03,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:18:03,532 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 8 states. [2020-09-25 10:18:03,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:03,892 INFO L93 Difference]: Finished difference Result 166 states and 199 transitions. [2020-09-25 10:18:03,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:18:03,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-25 10:18:03,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:03,899 INFO L225 Difference]: With dead ends: 166 [2020-09-25 10:18:03,900 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 10:18:03,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:18:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 10:18:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 124. [2020-09-25 10:18:03,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-25 10:18:03,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2020-09-25 10:18:03,938 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 38 [2020-09-25 10:18:03,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:03,938 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2020-09-25 10:18:03,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:18:03,938 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2020-09-25 10:18:03,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 10:18:03,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:03,941 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:03,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:18:03,941 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:03,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:03,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2102022651, now seen corresponding path program 1 times [2020-09-25 10:18:03,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:03,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521085802] [2020-09-25 10:18:03,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:03,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:03,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:04,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:04,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:04,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:04,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:04,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:05,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:05,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 10:18:05,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:18:05,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1981 [2020-09-25 10:18:05,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:05,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:05,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:18:05,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:18:05,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:18:05,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:06,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:06,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:06,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:06,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:06,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:06,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:18:06,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:06,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:06,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:06,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:06,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:06,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:06,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 10:18:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:06,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:06,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:06,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:06,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:06,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:18:06,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:06,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:06,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:18:06,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:06,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521085802] [2020-09-25 10:18:06,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:06,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:18:06,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427180671] [2020-09-25 10:18:06,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:18:06,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:06,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:18:06,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:18:06,056 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand 8 states. [2020-09-25 10:18:06,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:06,354 INFO L93 Difference]: Finished difference Result 357 states and 447 transitions. [2020-09-25 10:18:06,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:18:06,356 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-09-25 10:18:06,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:06,358 INFO L225 Difference]: With dead ends: 357 [2020-09-25 10:18:06,358 INFO L226 Difference]: Without dead ends: 250 [2020-09-25 10:18:06,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:18:06,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-09-25 10:18:06,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 158. [2020-09-25 10:18:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 10:18:06,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 191 transitions. [2020-09-25 10:18:06,397 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 191 transitions. Word has length 41 [2020-09-25 10:18:06,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:06,397 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 191 transitions. [2020-09-25 10:18:06,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:18:06,397 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 191 transitions. [2020-09-25 10:18:06,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 10:18:06,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:06,405 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:06,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:18:06,405 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:06,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:06,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1446982975, now seen corresponding path program 2 times [2020-09-25 10:18:06,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:06,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214958919] [2020-09-25 10:18:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:06,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:06,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:06,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:08,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:08,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 10:18:08,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:18:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2128 [2020-09-25 10:18:08,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:08,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:18:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 10:18:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 10:18:08,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:08,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:08,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:08,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:08,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:08,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:08,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:18:08,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:08,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:08,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:08,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:08,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:18:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:08,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:08,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:08,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:08,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:08,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:18:08,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:08,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:08,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:18:08,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:18:08,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 10:18:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:08,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:08,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:08,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:08,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:08,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:18:08,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:08,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:08,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:18:08,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 10:18:08,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214958919] [2020-09-25 10:18:08,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:08,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:18:08,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392301930] [2020-09-25 10:18:08,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:18:08,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:08,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:18:08,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:18:08,712 INFO L87 Difference]: Start difference. First operand 158 states and 191 transitions. Second operand 10 states. [2020-09-25 10:18:09,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:09,192 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-09-25 10:18:09,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:18:09,193 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-09-25 10:18:09,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:09,199 INFO L225 Difference]: With dead ends: 235 [2020-09-25 10:18:09,199 INFO L226 Difference]: Without dead ends: 233 [2020-09-25 10:18:09,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:18:09,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-09-25 10:18:09,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 148. [2020-09-25 10:18:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-25 10:18:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 179 transitions. [2020-09-25 10:18:09,220 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 179 transitions. Word has length 47 [2020-09-25 10:18:09,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:09,221 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 179 transitions. [2020-09-25 10:18:09,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:18:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 179 transitions. [2020-09-25 10:18:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 10:18:09,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:09,223 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:09,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:18:09,223 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:09,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:09,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1915994087, now seen corresponding path program 1 times [2020-09-25 10:18:09,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:09,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119520405] [2020-09-25 10:18:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:09,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:09,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:09,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:09,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:09,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:09,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:09,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:10,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:10,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:13,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:13,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:13,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 10:18:13,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:18:13,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4668 [2020-09-25 10:18:13,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:13,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:18:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 10:18:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:18:13,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:14,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:14,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:14,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:14,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:14,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:18:14,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:14,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:14,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:14,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:14,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:14,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:14,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 10:18:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:14,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:14,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:14,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:14,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:14,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:18:14,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:14,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:18:14,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:14,037 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:14,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119520405] [2020-09-25 10:18:14,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:14,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:18:14,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998495222] [2020-09-25 10:18:14,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:18:14,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:14,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:18:14,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:18:14,042 INFO L87 Difference]: Start difference. First operand 148 states and 179 transitions. Second operand 10 states. [2020-09-25 10:18:14,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:14,494 INFO L93 Difference]: Finished difference Result 218 states and 264 transitions. [2020-09-25 10:18:14,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:18:14,495 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-09-25 10:18:14,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:14,499 INFO L225 Difference]: With dead ends: 218 [2020-09-25 10:18:14,500 INFO L226 Difference]: Without dead ends: 216 [2020-09-25 10:18:14,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:18:14,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-25 10:18:14,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 152. [2020-09-25 10:18:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 10:18:14,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 184 transitions. [2020-09-25 10:18:14,526 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 184 transitions. Word has length 47 [2020-09-25 10:18:14,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:14,527 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 184 transitions. [2020-09-25 10:18:14,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:18:14,527 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 184 transitions. [2020-09-25 10:18:14,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 10:18:14,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:14,529 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:14,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:18:14,529 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:14,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:14,530 INFO L82 PathProgramCache]: Analyzing trace with hash -2007975937, now seen corresponding path program 2 times [2020-09-25 10:18:14,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:14,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350720658] [2020-09-25 10:18:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:14,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:14,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:14,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:14,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:14,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:14,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:14,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:15,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:15,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:17,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:17,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:17,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:18:17,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 10:18:17,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3310 [2020-09-25 10:18:17,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:17,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:17,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:18:17,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 10:18:17,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:18:17,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:17,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:17,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:17,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:17,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:17,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:17,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:18:17,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:17,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:17,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:17,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350720658] [2020-09-25 10:18:17,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:17,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:18:17,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984561784] [2020-09-25 10:18:17,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:18:17,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:17,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:18:17,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:18:17,982 INFO L87 Difference]: Start difference. First operand 152 states and 184 transitions. Second operand 10 states. [2020-09-25 10:18:18,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:18,398 INFO L93 Difference]: Finished difference Result 201 states and 243 transitions. [2020-09-25 10:18:18,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:18:18,399 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-09-25 10:18:18,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:18,401 INFO L225 Difference]: With dead ends: 201 [2020-09-25 10:18:18,401 INFO L226 Difference]: Without dead ends: 199 [2020-09-25 10:18:18,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:18:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-25 10:18:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 157. [2020-09-25 10:18:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-25 10:18:18,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 189 transitions. [2020-09-25 10:18:18,425 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 189 transitions. Word has length 47 [2020-09-25 10:18:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:18,426 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 189 transitions. [2020-09-25 10:18:18,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:18:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 189 transitions. [2020-09-25 10:18:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 10:18:18,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:18,428 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:18,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:18:18,428 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:18,428 INFO L82 PathProgramCache]: Analyzing trace with hash 87970788, now seen corresponding path program 1 times [2020-09-25 10:18:18,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:18,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139558203] [2020-09-25 10:18:18,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:18,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:18,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:18,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:18,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:19,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:20,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:20,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 10:18:20,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:18:20,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2537 [2020-09-25 10:18:20,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:20,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:18:20,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 10:18:20,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:18:20,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:21,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:21,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:21,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:21,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:21,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:18:21,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:21,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:21,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:21,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:21,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:18:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:21,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:21,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:21,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:21,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:18:21,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:21,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:21,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:21,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:21,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:18:21,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:21,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 10:18:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:21,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:21,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:21,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:18:21,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:21,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:18:21,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 10:18:21,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139558203] [2020-09-25 10:18:21,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:21,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:18:21,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300499497] [2020-09-25 10:18:21,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:18:21,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:21,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:18:21,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:18:21,084 INFO L87 Difference]: Start difference. First operand 157 states and 189 transitions. Second operand 8 states. [2020-09-25 10:18:21,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:21,245 INFO L93 Difference]: Finished difference Result 234 states and 281 transitions. [2020-09-25 10:18:21,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:18:21,245 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-09-25 10:18:21,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:21,247 INFO L225 Difference]: With dead ends: 234 [2020-09-25 10:18:21,247 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 10:18:21,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:18:21,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 10:18:21,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 97. [2020-09-25 10:18:21,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-25 10:18:21,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2020-09-25 10:18:21,260 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 50 [2020-09-25 10:18:21,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:21,260 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2020-09-25 10:18:21,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:18:21,261 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2020-09-25 10:18:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 10:18:21,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:21,262 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:21,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:18:21,262 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:21,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:21,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1141924898, now seen corresponding path program 1 times [2020-09-25 10:18:21,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:21,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180632276] [2020-09-25 10:18:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:21,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:21,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 10:18:21,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:18:21,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-09-25 10:18:21,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:21,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:21,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:18:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 10:18:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 10:18:21,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:22,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:22,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:22,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:18:22,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:22,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:22,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:22,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:22,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:22,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:22,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:22,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:18:22,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:18:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:22,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:22,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:22,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:22,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:18:22,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:22,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:22,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:18:22,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:22,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:18:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:22,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:22,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:22,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:22,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:18:22,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:22,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:22,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:18:22,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:22,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 10:18:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:22,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:22,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:22,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:18:22,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:22,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:18:22,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:18:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:22,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:22,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:22,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:18:22,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:22,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:18:22,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:18:22,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 10:18:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:22,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:22,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:22,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:22,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:18:22,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:22,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:22,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:18:22,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 10:18:22,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180632276] [2020-09-25 10:18:22,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:18:22,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 10:18:22,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939787229] [2020-09-25 10:18:22,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:18:22,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:22,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:18:22,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:18:22,230 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand 12 states. [2020-09-25 10:18:22,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:22,666 INFO L93 Difference]: Finished difference Result 121 states and 138 transitions. [2020-09-25 10:18:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:18:22,667 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 10:18:22,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:22,667 INFO L225 Difference]: With dead ends: 121 [2020-09-25 10:18:22,667 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:18:22,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2020-09-25 10:18:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:18:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:18:22,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:18:22,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:18:22,670 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2020-09-25 10:18:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:22,672 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:18:22,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:18:22,672 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:18:22,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:18:22,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 10:18:22,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:18:22,814 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 23 [2020-09-25 10:18:22,953 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 39 [2020-09-25 10:18:23,129 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 39 [2020-09-25 10:18:23,514 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 20 [2020-09-25 10:18:23,597 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 10:18:23,597 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:18:23,597 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:18:23,598 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:18:23,598 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:18:23,598 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:18:23,598 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 10:18:23,598 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 10:18:23,598 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 10:18:23,599 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 10:18:23,599 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 10:18:23,599 INFO L268 CegarLoopResult]: For program point L31(lines 23 33) no Hoare annotation was computed. [2020-09-25 10:18:23,599 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 37) no Hoare annotation was computed. [2020-09-25 10:18:23,599 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 10:18:23,599 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 10:18:23,599 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 10:18:23,600 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1))) [2020-09-25 10:18:23,600 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 10:18:23,600 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 10:18:23,601 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 10:18:23,601 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 10:18:23,601 INFO L268 CegarLoopResult]: For program point L24-1(lines 24 32) no Hoare annotation was computed. [2020-09-25 10:18:23,602 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 10:18:23,602 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-25 10:18:23,602 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 10:18:23,602 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 10:18:23,602 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 10:18:23,602 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 10:18:23,602 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-25 10:18:23,603 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-25 10:18:23,604 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 27) the Hoare annotation is: (let ((.cse0 (* main_~i~0 2)) (.cse3 (+ (* 2 main_~i~0) 1))) (let ((.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse4 (<= .cse3 main_~k~0)) (.cse5 (<= main_~k~0 main_~n~0)) (.cse2 (= .cse0 main_~j~0))) (or (and (= .cse0 main_~k~0) .cse1 .cse2) (and (<= .cse3 main_~j~0) .cse1 .cse4 .cse5) (and .cse4 .cse5 .cse2)))) [2020-09-25 10:18:23,604 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 10:18:23,604 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 10:18:23,604 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 37) no Hoare annotation was computed. [2020-09-25 10:18:23,605 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (<= (+ main_~j~0 1) main_~n~0))) (or (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 (= main_~n~0 main_~k~0)) (and (<= main_~n~0 main_~k~0) .cse0 (<= main_~k~0 main_~n~0) (= (* main_~i~0 2) main_~j~0)))) [2020-09-25 10:18:23,605 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 37) the Hoare annotation is: true [2020-09-25 10:18:23,605 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse0 (<= (+ main_~j~0 1) main_~n~0))) (or (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 (= main_~n~0 main_~k~0)) (and (<= main_~n~0 main_~k~0) .cse0 (<= main_~k~0 main_~n~0) (= (* main_~i~0 2) main_~j~0)))) [2020-09-25 10:18:23,605 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~i~0) 1))) (let ((.cse2 (<= .cse1 main_~k~0)) (.cse0 (<= (+ main_~k~0 1) main_~n~0))) (or (and .cse0 (<= .cse1 main_~j~0) (<= (+ main_~j~0 1) main_~n~0) .cse2) (and (let ((.cse4 (* main_~i~0 2))) (let ((.cse3 (= .cse4 main_~j~0))) (or (and .cse2 .cse3) (and (= .cse4 main_~k~0) .cse3)))) .cse0)))) [2020-09-25 10:18:23,606 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 27) no Hoare annotation was computed. [2020-09-25 10:18:23,606 INFO L268 CegarLoopResult]: For program point L22-2(lines 22 34) no Hoare annotation was computed. [2020-09-25 10:18:23,606 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 10:18:23,606 INFO L268 CegarLoopResult]: For program point L18(lines 18 21) no Hoare annotation was computed. [2020-09-25 10:18:23,606 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 10:18:23,606 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 21) no Hoare annotation was computed. [2020-09-25 10:18:23,606 INFO L264 CegarLoopResult]: At program point L22-5(lines 22 34) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-09-25 10:18:23,607 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 10:18:23,607 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 10:18:23,607 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 10:18:23,607 INFO L271 CegarLoopResult]: At program point L35(lines 13 37) the Hoare annotation is: true [2020-09-25 10:18:23,608 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 10:18:23,608 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 10:18:23,608 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 10:18:23,608 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 10:18:23,608 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 10:18:23,608 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 10:18:23,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:18:23 BoogieIcfgContainer [2020-09-25 10:18:23,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:18:23,640 INFO L168 Benchmark]: Toolchain (without parser) took 24720.28 ms. Allocated memory was 147.8 MB in the beginning and 354.9 MB in the end (delta: 207.1 MB). Free memory was 103.2 MB in the beginning and 136.2 MB in the end (delta: -33.0 MB). Peak memory consumption was 174.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:23,641 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 10:18:23,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.64 ms. Allocated memory is still 147.8 MB. Free memory was 102.6 MB in the beginning and 93.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:23,643 INFO L168 Benchmark]: Boogie Preprocessor took 130.09 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 93.1 MB in the beginning and 185.0 MB in the end (delta: -91.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:23,644 INFO L168 Benchmark]: RCFGBuilder took 402.97 ms. Allocated memory is still 205.0 MB. Free memory was 185.0 MB in the beginning and 168.8 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:23,654 INFO L168 Benchmark]: TraceAbstraction took 23864.75 ms. Allocated memory was 205.0 MB in the beginning and 354.9 MB in the end (delta: 149.9 MB). Free memory was 168.1 MB in the beginning and 136.2 MB in the end (delta: 32.0 MB). Peak memory consumption was 181.9 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:23,661 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 311.64 ms. Allocated memory is still 147.8 MB. Free memory was 102.6 MB in the beginning and 93.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.09 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 93.1 MB in the beginning and 185.0 MB in the end (delta: -91.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.97 ms. Allocated memory is still 205.0 MB. Free memory was 185.0 MB in the beginning and 168.8 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23864.75 ms. Allocated memory was 205.0 MB in the beginning and 354.9 MB in the end (delta: 149.9 MB). Free memory was 168.1 MB in the beginning and 136.2 MB in the end (delta: 32.0 MB). Peak memory consumption was 181.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: n <= k && k <= n - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((n <= k && k <= n) && i * 2 == j) || ((2 * i + 1 <= j && n <= k) && k <= n) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((i * 2 == k && j + 1 <= n) && i * 2 == j) || (((2 * i + 1 <= j && j + 1 <= n) && 2 * i + 1 <= k) && k <= n)) || ((2 * i + 1 <= k && k <= n) && i * 2 == j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.8s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 742 SDtfs, 533 SDslu, 3406 SDs, 0 SdLazy, 2021 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 441 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 51 PreInvPairs, 78 NumberOfFragments, 221 HoareAnnotationTreeSize, 51 FomulaSimplifications, 88133 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 12 FomulaSimplificationsInter, 834 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 18.6s InterpolantComputationTime, 468 NumberOfCodeBlocks, 468 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 457 ConstructedInterpolants, 0 QuantifiedInterpolants, 60831 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 103/145 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...