/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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:15:01,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:15:01,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:15:01,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:15:01,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:15:01,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:15:01,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:15:01,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:15:01,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:15:01,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:15:01,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:15:01,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:15:01,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:15:01,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:15:01,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:15:01,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:15:01,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:15:01,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:15:01,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:15:01,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:15:01,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:15:01,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:15:01,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:15:01,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:15:01,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:15:01,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:15:01,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:15:01,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:15:01,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:15:01,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:15:01,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:15:01,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:15:01,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:15:01,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:15:01,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:15:01,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:15:01,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:15:01,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:15:01,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:15:01,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:15:01,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:15:01,295 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 12:15:01,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:15:01,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:15:01,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:15:01,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:15:01,325 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:15:01,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:15:01,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:15:01,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:15:01,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:15:01,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:15:01,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:15:01,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:15:01,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:15:01,327 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:15:01,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:15:01,327 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:15:01,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:15:01,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:15:01,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:15:01,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:15:01,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:15:01,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:15:01,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:15:01,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:15:01,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:15:01,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:15:01,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:15:01,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:15:01,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:15:01,330 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:15:01,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:15:01,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:15:01,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:15:01,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:15:01,821 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:15:01,822 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2020-09-25 12:15:01,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b764881e/c55d546522d442b7a346d070490289c2/FLAG56e430c54 [2020-09-25 12:15:02,446 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:15:02,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2020-09-25 12:15:02,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b764881e/c55d546522d442b7a346d070490289c2/FLAG56e430c54 [2020-09-25 12:15:02,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b764881e/c55d546522d442b7a346d070490289c2 [2020-09-25 12:15:02,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:15:02,810 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:15:02,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:15:02,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:15:02,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:15:02,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:15:02" (1/1) ... [2020-09-25 12:15:02,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee2931e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:02, skipping insertion in model container [2020-09-25 12:15:02,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:15:02" (1/1) ... [2020-09-25 12:15:02,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:15:02,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:15:03,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:15:03,075 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:15:03,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:15:03,114 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:15:03,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:03 WrapperNode [2020-09-25 12:15:03,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:15:03,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:15:03,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:15:03,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:15:03,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:03" (1/1) ... [2020-09-25 12:15:03,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:03" (1/1) ... [2020-09-25 12:15:03,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:03" (1/1) ... [2020-09-25 12:15:03,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:03" (1/1) ... [2020-09-25 12:15:03,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:03" (1/1) ... [2020-09-25 12:15:03,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:03" (1/1) ... [2020-09-25 12:15:03,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:03" (1/1) ... [2020-09-25 12:15:03,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:15:03,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:15:03,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:15:03,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:15:03,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:03" (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 12:15:03,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:15:03,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:15:03,323 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 12:15:03,323 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 12:15:03,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:15:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:15:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:15:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 12:15:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 12:15:03,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:15:03,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:15:03,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:15:03,572 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:15:03,572 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:15:03,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:15:03 BoogieIcfgContainer [2020-09-25 12:15:03,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:15:03,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:15:03,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:15:03,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:15:03,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:15:02" (1/3) ... [2020-09-25 12:15:03,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd96e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:15:03, skipping insertion in model container [2020-09-25 12:15:03,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:03" (2/3) ... [2020-09-25 12:15:03,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd96e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:15:03, skipping insertion in model container [2020-09-25 12:15:03,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:15:03" (3/3) ... [2020-09-25 12:15:03,588 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_2-2.c [2020-09-25 12:15:03,601 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:15:03,611 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:15:03,637 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:15:03,678 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:15:03,678 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:15:03,679 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:15:03,679 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:15:03,679 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:15:03,679 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:15:03,680 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:15:03,680 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:15:03,707 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 12:15:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:15:03,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:03,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:03,719 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:03,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:03,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 12:15:03,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:03,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744667879] [2020-09-25 12:15:03,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:03,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:03,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:03,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:15:03,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:03,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 12:15:03,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:03,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:15:03,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:15:03,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:03,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:03,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:03,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:03,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:03,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:03,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:03,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:03,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:03,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:03,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:03,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:03,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:04,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:04,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:04,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:04,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:15:04,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:04,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:04,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:04,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:04,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:04,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:04,048 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 12:15:04,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744667879] [2020-09-25 12:15:04,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:04,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:15:04,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323625980] [2020-09-25 12:15:04,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:15:04,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:04,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:15:04,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:15:04,075 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 12:15:04,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:04,210 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 12:15:04,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:15:04,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 12:15:04,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:04,227 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:15:04,227 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 12:15:04,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 12:15:04,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 12:15:04,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 12:15:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:15:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:15:04,291 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 12:15:04,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:04,292 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:15:04,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:15:04,292 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:15:04,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 12:15:04,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:04,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:04,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:15:04,296 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:04,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:04,296 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 12:15:04,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:04,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406959931] [2020-09-25 12:15:04,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:04,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:04,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:04,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:15:04,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:04,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 12:15:04,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:04,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:04,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:15:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:04,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:04,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:04,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:04,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:04,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:04,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:04,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:15:04,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:04,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:04,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:04,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:04,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:04,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:04,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:04,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:04,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:04,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:04,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 12:15:04,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:04,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:15:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:04,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:04,588 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 12:15:04,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406959931] [2020-09-25 12:15:04,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:04,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:15:04,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774430072] [2020-09-25 12:15:04,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:15:04,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:04,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:15:04,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:15:04,592 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 12:15:04,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:04,637 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 12:15:04,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:15:04,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 12:15:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:04,642 INFO L225 Difference]: With dead ends: 50 [2020-09-25 12:15:04,643 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 12:15:04,644 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 12:15:04,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 12:15:04,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 12:15:04,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:15:04,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:15:04,654 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 12:15:04,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:04,655 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:15:04,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:15:04,655 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:15:04,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:15:04,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:04,657 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:15:04,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:15:04,658 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:04,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:04,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 12:15:04,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:04,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287731255] [2020-09-25 12:15:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:04,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:04,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:04,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:04,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 12:15:04,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:04,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 12:15:04,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:04,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:04,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:15:04,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:04,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:04,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:04,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:04,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:04,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:04,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:15:04,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:04,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:04,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:04,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:04,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:04,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:05,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:05,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:05,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 12:15:05,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:05,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:05,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:05,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:05,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:05,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:05,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:05,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:05,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:15:05,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:05,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:05,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:05,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:05,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:05,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:05,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:05,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:05,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:05,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:15:05,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:05,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:15:05,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287731255] [2020-09-25 12:15:05,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:05,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:15:05,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110414064] [2020-09-25 12:15:05,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:05,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:05,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:05,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:05,175 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 12:15:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:05,306 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 12:15:05,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:05,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 12:15:05,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:05,310 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:15:05,310 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 12:15:05,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:05,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 12:15:05,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 12:15:05,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:15:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 12:15:05,325 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 12:15:05,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:05,328 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 12:15:05,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:05,328 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 12:15:05,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 12:15:05,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:05,330 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:15:05,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:15:05,332 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:05,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:05,333 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-25 12:15:05,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:05,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154001845] [2020-09-25 12:15:05,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:05,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:15:05,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:05,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 12:15:05,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:05,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 12:15:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:15:05,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:05,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:05,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:05,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:05,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:15:05,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:05,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:05,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:05,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:05,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:05,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:05,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:05,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:15:05,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:05,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 12:15:05,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:05,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:15:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:05,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:05,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:05,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:05,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:05,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:05,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:15:05,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:05,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:15:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:05,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:05,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:05,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:05,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:05,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:05,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:15:05,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:05,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:05,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:05,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 12:15:05,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154001845] [2020-09-25 12:15:05,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:05,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:15:05,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735503322] [2020-09-25 12:15:05,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:15:05,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:05,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:15:05,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:05,745 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 12:15:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:05,869 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 12:15:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:15:05,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 12:15:05,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:05,872 INFO L225 Difference]: With dead ends: 72 [2020-09-25 12:15:05,873 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:15:05,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:15:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:15:05,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 12:15:05,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 12:15:05,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 12:15:05,887 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 34 [2020-09-25 12:15:05,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:05,887 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 12:15:05,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:15:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 12:15:05,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 12:15:05,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:05,890 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] [2020-09-25 12:15:05,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:15:05,891 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:05,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:05,891 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 12:15:05,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:05,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385323412] [2020-09-25 12:15:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:05,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:06,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:15:06,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:06,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-09-25 12:15:06,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:06,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:15:06,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:06,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:06,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:06,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:06,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:06,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:06,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:06,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:06,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:06,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:06,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:06,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:06,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:06,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:15:06,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:06,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-09-25 12:15:06,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:06,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:06,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:06,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:15:06,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:06,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:06,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:06,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:06,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:06,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:15:06,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:06,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:06,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:06,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:06,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:06,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:06,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:06,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 12:15:06,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:06,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:06,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:06,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:06,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:06,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:15:06,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385323412] [2020-09-25 12:15:06,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:06,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:15:06,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537354618] [2020-09-25 12:15:06,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:06,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:06,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:06,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:06,991 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 7 states. [2020-09-25 12:15:07,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:07,113 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 12:15:07,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:07,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 12:15:07,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:07,116 INFO L225 Difference]: With dead ends: 72 [2020-09-25 12:15:07,116 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:15:07,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:07,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:15:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 12:15:07,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 12:15:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 12:15:07,128 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 35 [2020-09-25 12:15:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:07,128 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 12:15:07,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:07,128 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 12:15:07,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:15:07,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:07,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1] [2020-09-25 12:15:07,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:15:07,132 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:07,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:07,132 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-25 12:15:07,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:07,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539058710] [2020-09-25 12:15:07,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:07,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:07,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:07,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:08,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:12,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:12,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:15:12,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:12,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:15:12,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:12,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:15:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 12:15:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:15:12,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:12,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:12,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:12,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:12,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:12,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:12,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:12,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:12,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:12,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:12,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:12,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:12,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:12,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:14,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:15:14,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:15:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1809 [2020-09-25 12:15:14,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:14,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:15:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:14,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 12:15:14,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:14,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:14,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:14,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:14,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:14,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:15:14,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:14,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:14,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:15:14,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:14,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:14,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:14,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:14,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:14,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:14,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:14,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 12:15:14,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:14,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:14,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:14,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:14,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:14,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:14,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:14,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:14,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:14,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:14,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:15:14,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:14,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:15:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:14,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:15:14,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:14,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:14,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:14,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:14,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:15:14,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:14,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:14,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 12:15:14,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539058710] [2020-09-25 12:15:14,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:14,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:15:14,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018204355] [2020-09-25 12:15:14,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:15:14,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:14,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:15:14,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:15:14,488 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 12 states. [2020-09-25 12:15:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:14,709 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2020-09-25 12:15:14,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:15:14,710 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-09-25 12:15:14,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:14,712 INFO L225 Difference]: With dead ends: 93 [2020-09-25 12:15:14,712 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 12:15:14,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:15:14,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 12:15:14,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 64. [2020-09-25 12:15:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 12:15:14,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2020-09-25 12:15:14,725 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 51 [2020-09-25 12:15:14,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:14,726 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2020-09-25 12:15:14,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:15:14,726 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2020-09-25 12:15:14,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 12:15:14,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:14,729 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:14,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:15:14,729 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:14,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:14,729 INFO L82 PathProgramCache]: Analyzing trace with hash -991775051, now seen corresponding path program 1 times [2020-09-25 12:15:14,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:14,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710515609] [2020-09-25 12:15:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:15,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:19,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:19,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 12:15:19,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:15:19,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:15:19,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:19,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:19,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 12:15:19,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:19,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:19,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:19,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:19,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:19,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:19,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:19,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:19,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:19,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:19,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:19,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:19,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:20,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:20,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:20,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:22,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:22,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 12:15:22,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:15:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2749 [2020-09-25 12:15:22,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:22,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:22,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:15:22,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:22,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:22,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:22,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:22,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:22,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:22,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:15:22,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:22,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:22,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:22,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:22,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:22,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:22,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:22,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:22,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:22,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:22,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:23,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:23,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:15:23,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:15:23,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-09-25 12:15:23,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:23,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:23,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:23,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:15:23,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:23,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:23,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:23,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:23,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:23,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:23,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:15:23,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:23,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:23,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:23,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:23,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:23,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:23,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:23,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:15:23,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:23,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:23,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:15:23,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710515609] [2020-09-25 12:15:23,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:23,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:15:23,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670217544] [2020-09-25 12:15:23,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:23,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:23,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:23,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:23,064 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand 7 states. [2020-09-25 12:15:23,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:23,185 INFO L93 Difference]: Finished difference Result 82 states and 108 transitions. [2020-09-25 12:15:23,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:23,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 12:15:23,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:23,187 INFO L225 Difference]: With dead ends: 82 [2020-09-25 12:15:23,188 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 12:15:23,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:23,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 12:15:23,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 52. [2020-09-25 12:15:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 12:15:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 12:15:23,197 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 52 [2020-09-25 12:15:23,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:23,198 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 12:15:23,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:23,198 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 12:15:23,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 12:15:23,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:23,200 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:23,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:15:23,200 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:23,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:23,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1875452576, now seen corresponding path program 1 times [2020-09-25 12:15:23,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:23,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993484908] [2020-09-25 12:15:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:23,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:23,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:23,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:23,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:23,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:25,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:25,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 12:15:25,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:15:25,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1837 [2020-09-25 12:15:25,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:25,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:25,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:15:25,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:15:25,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:15:25,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:25,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:25,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:25,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:25,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:25,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:25,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:25,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:25,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:25,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:25,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:25,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:25,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:25,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:25,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:25,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:25,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:15:25,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:25,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-09-25 12:15:25,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:25,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:15:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:15:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:15:25,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:25,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:25,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:26,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:26,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:26,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 12:15:26,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:26,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:15:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:26,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:26,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:26,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:26,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:26,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:15:26,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:26,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:26,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:26,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:26,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:26,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:26,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:15:26,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:26,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:26,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:26,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:26,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:26,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:15:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:26,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:26,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:26,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:26,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:15:26,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:26,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:26,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:26,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:26,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:26,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 12:15:26,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993484908] [2020-09-25 12:15:26,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:26,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:15:26,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624898467] [2020-09-25 12:15:26,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:15:26,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:26,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:15:26,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:15:26,182 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 8 states. [2020-09-25 12:15:26,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:26,360 INFO L93 Difference]: Finished difference Result 92 states and 123 transitions. [2020-09-25 12:15:26,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:26,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-09-25 12:15:26,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:26,361 INFO L225 Difference]: With dead ends: 92 [2020-09-25 12:15:26,361 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 12:15:26,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:15:26,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 12:15:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 12:15:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 12:15:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 12:15:26,364 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2020-09-25 12:15:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:26,364 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 12:15:26,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:15:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 12:15:26,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 12:15:26,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:15:26,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 12:15:26,511 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 12:15:26,512 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:15:26,512 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:15:26,512 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 12:15:26,512 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 12:15:26,512 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:15:26,512 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-09-25 12:15:26,513 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2020-09-25 12:15:26,513 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2020-09-25 12:15:26,513 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2020-09-25 12:15:26,513 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-25 12:15:26,513 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-09-25 12:15:26,513 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (= main_~x~0 2) [2020-09-25 12:15:26,514 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-25 12:15:26,514 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2020-09-25 12:15:26,514 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-25 12:15:26,514 INFO L268 CegarLoopResult]: For program point L37-3(line 37) no Hoare annotation was computed. [2020-09-25 12:15:26,514 INFO L271 CegarLoopResult]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2020-09-25 12:15:26,514 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= 2 |fibo2_#in~n|)) [2020-09-25 12:15:26,514 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 12:15:26,515 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 12:15:26,515 INFO L264 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= 2 |fibo2_#in~n|)) [2020-09-25 12:15:26,515 INFO L268 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-09-25 12:15:26,515 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 12:15:26,515 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 12:15:26,515 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 12:15:26,515 INFO L268 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-09-25 12:15:26,516 INFO L268 CegarLoopResult]: For program point L23-5(line 23) no Hoare annotation was computed. [2020-09-25 12:15:26,516 INFO L268 CegarLoopResult]: For program point L23-6(line 23) no Hoare annotation was computed. [2020-09-25 12:15:26,516 INFO L268 CegarLoopResult]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2020-09-25 12:15:26,516 INFO L268 CegarLoopResult]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2020-09-25 12:15:26,516 INFO L271 CegarLoopResult]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2020-09-25 12:15:26,516 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (= fibo1_~n |fibo1_#in~n|) [2020-09-25 12:15:26,517 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-25 12:15:26,517 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 12:15:26,517 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (= |fibo1_#t~ret0| 1) .cse0) (and (not (= 2 |fibo1_#in~n|)) .cse0))) [2020-09-25 12:15:26,517 INFO L268 CegarLoopResult]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2020-09-25 12:15:26,517 INFO L268 CegarLoopResult]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-09-25 12:15:26,517 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-25 12:15:26,518 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 12:15:26,518 INFO L268 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-09-25 12:15:26,518 INFO L268 CegarLoopResult]: For program point L8(lines 8 14) no Hoare annotation was computed. [2020-09-25 12:15:26,518 INFO L268 CegarLoopResult]: For program point L13-5(line 13) no Hoare annotation was computed. [2020-09-25 12:15:26,518 INFO L268 CegarLoopResult]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-09-25 12:15:26,518 INFO L268 CegarLoopResult]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2020-09-25 12:15:26,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:15:26 BoogieIcfgContainer [2020-09-25 12:15:26,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:15:26,530 INFO L168 Benchmark]: Toolchain (without parser) took 23723.05 ms. Allocated memory was 146.3 MB in the beginning and 353.4 MB in the end (delta: 207.1 MB). Free memory was 102.9 MB in the beginning and 135.6 MB in the end (delta: -32.6 MB). Peak memory consumption was 174.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:15:26,531 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 12:15:26,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.20 ms. Allocated memory is still 146.3 MB. Free memory was 102.3 MB in the beginning and 92.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 12:15:26,533 INFO L168 Benchmark]: Boogie Preprocessor took 120.31 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 92.7 MB in the beginning and 181.1 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-25 12:15:26,533 INFO L168 Benchmark]: RCFGBuilder took 341.59 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 166.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-09-25 12:15:26,534 INFO L168 Benchmark]: TraceAbstraction took 22946.97 ms. Allocated memory was 202.4 MB in the beginning and 353.4 MB in the end (delta: 151.0 MB). Free memory was 166.4 MB in the beginning and 135.6 MB in the end (delta: 30.9 MB). Peak memory consumption was 181.8 MB. Max. memory is 7.1 GB. [2020-09-25 12:15:26,539 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.20 ms. Allocated memory is still 146.3 MB. Free memory was 102.3 MB in the beginning and 92.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.31 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 92.7 MB in the beginning and 181.1 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 341.59 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 166.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22946.97 ms. Allocated memory was 202.4 MB in the beginning and 353.4 MB in the end (delta: 151.0 MB). Free memory was 166.4 MB in the beginning and 135.6 MB in the end (delta: 30.9 MB). Peak memory consumption was 181.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.6s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 352 SDtfs, 171 SDslu, 1577 SDs, 0 SdLazy, 555 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 75 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 38 PreInvPairs, 49 NumberOfFragments, 42 HoareAnnotationTreeSize, 38 FomulaSimplifications, 168 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 21.0s InterpolantComputationTime, 288 NumberOfCodeBlocks, 288 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 280 ConstructedInterpolants, 0 QuantifiedInterpolants, 29090 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 50/68 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...