/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_20-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:22:48,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:22:48,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:22:48,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:22:48,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:22:48,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:22:48,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:22:48,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:22:48,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:22:48,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:22:48,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:22:48,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:22:48,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:22:48,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:22:48,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:22:48,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:22:48,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:22:48,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:22:48,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:22:48,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:22:48,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:22:48,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:22:48,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:22:48,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:22:48,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:22:48,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:22:48,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:22:48,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:22:48,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:22:48,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:22:48,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:22:48,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:22:48,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:22:48,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:22:48,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:22:48,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:22:48,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:22:48,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:22:48,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:22:48,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:22:48,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:22:48,236 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 [2020-09-21 12:22:48,263 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:22:48,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:22:48,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:22:48,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:22:48,265 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:22:48,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:22:48,265 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:22:48,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:22:48,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:22:48,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:22:48,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:22:48,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:22:48,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:22:48,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:22:48,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:22:48,267 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:22:48,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:22:48,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:22:48,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:22:48,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:22:48,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:22:48,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:22:48,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:22:48,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:22:48,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:22:48,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:22:48,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:22:48,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:22:48,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:22:48,270 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:22:48,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:22:48,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:22:48,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:22:48,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:22:48,780 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:22:48,781 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_20-2.c [2020-09-21 12:22:48,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/442c842c2/167876baa3d4431dbfe635b598a1ca7a/FLAGfe86dc08b [2020-09-21 12:22:49,361 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:22:49,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_20-2.c [2020-09-21 12:22:49,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/442c842c2/167876baa3d4431dbfe635b598a1ca7a/FLAGfe86dc08b [2020-09-21 12:22:49,702 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/442c842c2/167876baa3d4431dbfe635b598a1ca7a [2020-09-21 12:22:49,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:22:49,723 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:22:49,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:22:49,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:22:49,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:22:49,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:22:49" (1/1) ... [2020-09-21 12:22:49,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:49, skipping insertion in model container [2020-09-21 12:22:49,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:22:49" (1/1) ... [2020-09-21 12:22:49,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:22:49,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:22:49,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:22:50,000 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:22:50,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:22:50,034 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:22:50,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:50 WrapperNode [2020-09-21 12:22:50,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:22:50,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:22:50,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:22:50,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:22:50,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:50" (1/1) ... [2020-09-21 12:22:50,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:50" (1/1) ... [2020-09-21 12:22:50,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:50" (1/1) ... [2020-09-21 12:22:50,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:50" (1/1) ... [2020-09-21 12:22:50,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:50" (1/1) ... [2020-09-21 12:22:50,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:50" (1/1) ... [2020-09-21 12:22:50,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:50" (1/1) ... [2020-09-21 12:22:50,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:22:50,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:22:50,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:22:50,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:22:50,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:50" (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 [2020-09-21 12:22:50,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:22:50,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:22:50,223 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-21 12:22:50,223 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-21 12:22:50,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:22:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:22:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:22:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-21 12:22:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-21 12:22:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:22:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:22:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:22:50,504 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:22:50,505 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:22:50,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:22:50 BoogieIcfgContainer [2020-09-21 12:22:50,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:22:50,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:22:50,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:22:50,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:22:50,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:22:49" (1/3) ... [2020-09-21 12:22:50,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:22:50, skipping insertion in model container [2020-09-21 12:22:50,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:50" (2/3) ... [2020-09-21 12:22:50,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:22:50, skipping insertion in model container [2020-09-21 12:22:50,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:22:50" (3/3) ... [2020-09-21 12:22:50,543 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_20-2.c [2020-09-21 12:22:50,553 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:22:50,562 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:22:50,583 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:22:50,613 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:22:50,613 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:22:50,613 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:22:50,613 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:22:50,614 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:22:50,614 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:22:50,614 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:22:50,614 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:22:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-21 12:22:50,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:22:50,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:22:50,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:22:50,642 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:22:50,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:22:50,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-09-21 12:22:50,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:22:50,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932208191] [2020-09-21 12:22:50,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:22:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:50,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:50,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:50,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:22:50,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 12:22:50,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:22:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:22:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:22:50,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:22:50,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:22:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:50,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:50,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:50,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:22:50,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:50,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:22:50,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:50,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:22:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:50,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:50,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:50,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:22:50,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:22:50,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:22:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:22:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:22:50,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:22:50,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932208191] [2020-09-21 12:22:50,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:22:50,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:22:50,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971305854] [2020-09-21 12:22:51,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:22:51,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:22:51,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:22:51,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:22:51,022 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-21 12:22:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:22:51,147 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-09-21 12:22:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:22:51,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 12:22:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:22:51,162 INFO L225 Difference]: With dead ends: 44 [2020-09-21 12:22:51,163 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 12:22:51,167 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 [2020-09-21 12:22:51,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 12:22:51,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-21 12:22:51,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 12:22:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-09-21 12:22:51,222 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-09-21 12:22:51,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:22:51,223 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-09-21 12:22:51,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:22:51,223 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-09-21 12:22:51,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 12:22:51,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:22:51,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:22:51,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:22:51,227 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:22:51,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:22:51,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-09-21 12:22:51,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:22:51,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694057409] [2020-09-21 12:22:51,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:22:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:51,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:51,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:51,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 12:22:51,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:51,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-21 12:22:51,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:51,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:22:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:22:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:51,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:51,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:22:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:51,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:51,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:51,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:22:51,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:51,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:22:51,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:51,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:22:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:51,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:51,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:51,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:22:51,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:51,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:22:51,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:22:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:22:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:51,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:22:51,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694057409] [2020-09-21 12:22:51,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:22:51,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:22:51,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762640947] [2020-09-21 12:22:51,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:22:51,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:22:51,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:22:51,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:22:51,441 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-09-21 12:22:51,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:22:51,516 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-09-21 12:22:51,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:22:51,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 12:22:51,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:22:51,518 INFO L225 Difference]: With dead ends: 36 [2020-09-21 12:22:51,519 INFO L226 Difference]: Without dead ends: 32 [2020-09-21 12:22:51,520 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 [2020-09-21 12:22:51,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-21 12:22:51,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-21 12:22:51,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 12:22:51,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-09-21 12:22:51,530 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-09-21 12:22:51,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:22:51,530 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-09-21 12:22:51,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:22:51,531 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-09-21 12:22:51,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 12:22:51,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:22:51,533 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:22:51,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:22:51,533 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:22:51,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:22:51,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-09-21 12:22:51,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:22:51,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410754480] [2020-09-21 12:22:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:22:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:51,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:51,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:51,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:52,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:52,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-21 12:22:52,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:22:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-09-21 12:22:52,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:22:52,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:22:52,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:52,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:22:52,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:22:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:52,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:52,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:52,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:22:52,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:52,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:22:52,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:52,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:52,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:52,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:52,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:22:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:52,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:52,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:52,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:22:52,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:52,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-21 12:22:52,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:22:52,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:22:52,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:52,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:52,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:52,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:52,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:22:52,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:52,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:22:52,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:52,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:22:52,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:22:52,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:22:52,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:52,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:22:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:52,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:52,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:52,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:22:52,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:52,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:22:52,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:52,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:52,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:22:52,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:52,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:22:52,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410754480] [2020-09-21 12:22:52,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:22:52,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:22:52,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771100972] [2020-09-21 12:22:52,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:22:52,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:22:52,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:22:52,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:22:52,463 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 6 states. [2020-09-21 12:22:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:22:52,567 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-09-21 12:22:52,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:22:52,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-21 12:22:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:22:52,569 INFO L225 Difference]: With dead ends: 58 [2020-09-21 12:22:52,569 INFO L226 Difference]: Without dead ends: 34 [2020-09-21 12:22:52,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:22:52,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-21 12:22:52,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-21 12:22:52,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 12:22:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-09-21 12:22:52,581 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-09-21 12:22:52,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:22:52,581 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-09-21 12:22:52,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:22:52,582 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-09-21 12:22:52,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 12:22:52,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:22:52,584 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] [2020-09-21 12:22:52,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:22:52,584 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:22:52,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:22:52,585 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-09-21 12:22:52,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:22:52,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369782893] [2020-09-21 12:22:52,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:22:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:52,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:52,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:52,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:52,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:22:52,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:22:52,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-21 12:22:52,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:22:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:22:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:22:52,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:52,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:22:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:52,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:52,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:22:52,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:52,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:22:52,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:52,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:52,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:52,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:22:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:52,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:52,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:53,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:53,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:22:53,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:22:53,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-21 12:22:53,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:22:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:22:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:22:53,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:53,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:53,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:53,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:53,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:22:53,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:53,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:22:53,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:22:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:53,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:22:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:53,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:53,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:53,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:22:53,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:53,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:22:53,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:22:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:53,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:22:53,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369782893] [2020-09-21 12:22:53,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:22:53,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:22:53,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137978342] [2020-09-21 12:22:53,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:22:53,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:22:53,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:22:53,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:22:53,270 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2020-09-21 12:22:53,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:22:53,397 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2020-09-21 12:22:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:22:53,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-21 12:22:53,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:22:53,400 INFO L225 Difference]: With dead ends: 39 [2020-09-21 12:22:53,400 INFO L226 Difference]: Without dead ends: 35 [2020-09-21 12:22:53,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:22:53,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-21 12:22:53,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-09-21 12:22:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-21 12:22:53,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2020-09-21 12:22:53,410 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 27 [2020-09-21 12:22:53,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:22:53,410 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2020-09-21 12:22:53,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:22:53,410 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2020-09-21 12:22:53,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 12:22:53,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:22:53,412 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] [2020-09-21 12:22:53,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:22:53,413 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:22:53,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:22:53,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1725129826, now seen corresponding path program 1 times [2020-09-21 12:22:53,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:22:53,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211163934] [2020-09-21 12:22:53,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:22:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:53,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:53,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:53,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:53,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:54,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:54,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:22:54,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:22:54,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-09-21 12:22:54,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:22:54,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:22:54,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:22:54,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:54,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:22:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:54,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:54,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:54,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:22:54,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:22:54,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:54,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:54,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:22:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:54,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:54,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:54,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:54,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 12:22:54,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:22:54,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-21 12:22:54,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:54,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:22:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:22:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:22:54,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:54,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:54,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:54,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:54,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:22:54,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:22:54,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:22:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:22:54,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:54,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:22:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:54,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:54,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:54,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:22:54,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:22:54,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:22:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:22:54,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:54,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 12:22:54,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211163934] [2020-09-21 12:22:54,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:22:54,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:22:54,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766503273] [2020-09-21 12:22:54,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:22:54,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:22:54,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:22:54,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:22:54,221 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 5 states. [2020-09-21 12:22:54,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:22:54,304 INFO L93 Difference]: Finished difference Result 70 states and 98 transitions. [2020-09-21 12:22:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:22:54,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-21 12:22:54,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:22:54,306 INFO L225 Difference]: With dead ends: 70 [2020-09-21 12:22:54,306 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 12:22:54,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:22:54,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 12:22:54,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-09-21 12:22:54,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-21 12:22:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2020-09-21 12:22:54,319 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 28 [2020-09-21 12:22:54,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:22:54,319 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2020-09-21 12:22:54,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:22:54,319 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2020-09-21 12:22:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 12:22:54,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:22:54,322 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] [2020-09-21 12:22:54,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:22:54,322 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:22:54,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:22:54,323 INFO L82 PathProgramCache]: Analyzing trace with hash 482300055, now seen corresponding path program 1 times [2020-09-21 12:22:54,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:22:54,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738379096] [2020-09-21 12:22:54,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:22:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:54,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:54,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:54,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:54,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:55,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:55,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-21 12:22:55,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:22:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:22:55,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:22:55,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-21 12:22:55,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:55,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:55,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:22:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:55,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:55,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:55,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:22:55,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:55,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:22:55,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:55,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:55,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:55,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:55,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:55,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:22:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:55,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:55,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:55,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:22:55,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:22:55,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-09-21 12:22:55,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:55,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:22:55,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:22:55,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:55,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:55,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:55,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:55,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:55,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:22:55,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:55,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:22:55,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:55,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:55,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:22:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:55,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:55,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:55,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:22:55,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:55,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:22:55,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:22:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:22:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:55,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:55,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:55,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:55,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:55,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:22:55,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:55,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:22:55,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:22:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:22:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:22:55,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:55,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:22:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:55,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:55,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:55,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:22:55,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:55,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:22:55,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:55,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:22:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:55,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 12:22:55,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738379096] [2020-09-21 12:22:55,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:22:55,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:22:55,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171374008] [2020-09-21 12:22:55,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:22:55,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:22:55,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:22:55,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:22:55,925 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 6 states. [2020-09-21 12:22:55,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:22:55,999 INFO L93 Difference]: Finished difference Result 70 states and 98 transitions. [2020-09-21 12:22:55,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:22:56,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-09-21 12:22:56,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:22:56,001 INFO L225 Difference]: With dead ends: 70 [2020-09-21 12:22:56,001 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 12:22:56,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:22:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 12:22:56,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-21 12:22:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 12:22:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2020-09-21 12:22:56,012 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 40 [2020-09-21 12:22:56,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:22:56,012 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2020-09-21 12:22:56,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:22:56,012 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2020-09-21 12:22:56,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-21 12:22:56,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:22:56,015 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] [2020-09-21 12:22:56,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:22:56,015 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:22:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:22:56,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1870215323, now seen corresponding path program 1 times [2020-09-21 12:22:56,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:22:56,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869146698] [2020-09-21 12:22:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:22:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:56,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:56,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:56,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:56,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:56,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:56,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:57,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:22:57,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:22:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:22:57,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:22:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:22:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:22:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:57,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:22:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:57,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:57,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:22:57,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:57,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:22:57,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:57,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:22:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:57,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:57,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:22:57,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:22:57,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-09-21 12:22:57,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:22:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:22:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:22:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:57,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:57,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:22:57,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:57,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:22:57,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:22:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:22:57,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:57,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:22:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:57,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:57,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:22:57,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:22:57,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-21 12:22:57,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:22:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:22:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:22:57,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:57,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:57,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:57,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:22:57,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:57,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:22:57,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:22:57,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:57,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:57,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:57,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:22:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:57,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:57,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:22:57,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:57,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:22:57,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:22:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:22:57,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-21 12:22:57,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869146698] [2020-09-21 12:22:57,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:22:57,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:22:57,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991478005] [2020-09-21 12:22:57,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:22:57,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:22:57,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:22:57,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:22:57,813 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand 7 states. [2020-09-21 12:22:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:22:57,931 INFO L93 Difference]: Finished difference Result 78 states and 107 transitions. [2020-09-21 12:22:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:22:57,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-09-21 12:22:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:22:57,933 INFO L225 Difference]: With dead ends: 78 [2020-09-21 12:22:57,933 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 12:22:57,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:22:57,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 12:22:57,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-09-21 12:22:57,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-21 12:22:57,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-09-21 12:22:57,943 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 41 [2020-09-21 12:22:57,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:22:57,943 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-09-21 12:22:57,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:22:57,944 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-09-21 12:22:57,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-21 12:22:57,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:22:57,946 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] [2020-09-21 12:22:57,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:22:57,946 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:22:57,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:22:57,947 INFO L82 PathProgramCache]: Analyzing trace with hash 208191613, now seen corresponding path program 2 times [2020-09-21 12:22:57,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:22:57,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354910521] [2020-09-21 12:22:57,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:22:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:58,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:58,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:58,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:22:58,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:22:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:22:58,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:22:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:22:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:22:58,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:58,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:22:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:58,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:58,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:58,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:22:58,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:58,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:22:58,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:58,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:58,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:58,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:58,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:22:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:58,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:59,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:59,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:59,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:59,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:22:59,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:22:59,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:22:59,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:22:59,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:22:59,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 12:22:59,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:00,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:00,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:00,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:00,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:00,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 12:23:00,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:00,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:00,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:00,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:00,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:00,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:00,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:00,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:00,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:00,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:00,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:00,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:00,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:00,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:00,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:00,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:00,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:00,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:00,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:00,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:00,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:00,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:00,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:00,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:23:00,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:00,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:00,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:00,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:23:00,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:00,151 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 12:23:00,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354910521] [2020-09-21 12:23:00,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:00,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:23:00,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689672765] [2020-09-21 12:23:00,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:23:00,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:00,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:23:00,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:23:00,154 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 7 states. [2020-09-21 12:23:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:00,295 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2020-09-21 12:23:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:23:00,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-09-21 12:23:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:00,297 INFO L225 Difference]: With dead ends: 51 [2020-09-21 12:23:00,297 INFO L226 Difference]: Without dead ends: 47 [2020-09-21 12:23:00,298 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 [2020-09-21 12:23:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-21 12:23:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-09-21 12:23:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-21 12:23:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-09-21 12:23:00,306 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 41 [2020-09-21 12:23:00,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:00,306 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-09-21 12:23:00,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:23:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-09-21 12:23:00,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-21 12:23:00,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:00,308 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:23:00,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:23:00,309 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:00,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:00,309 INFO L82 PathProgramCache]: Analyzing trace with hash 794281190, now seen corresponding path program 1 times [2020-09-21 12:23:00,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:00,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000583856] [2020-09-21 12:23:00,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:00,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:01,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:23:01,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:23:01,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:23:01,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:01,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:23:01,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:23:01,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 12:23:01,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:01,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:01,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:01,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:01,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:01,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:23:01,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:01,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:01,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:01,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:01,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:01,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:01,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:02,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-21 12:23:02,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:23:02,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:23:02,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:23:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:23:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:23:02,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:02,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:02,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:02,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:02,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-09-21 12:23:02,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:23:02,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:02,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:02,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:02,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:02,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:23:02,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:23:02,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:02,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:02,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:02,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:02,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:02,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:23:02,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:02,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:02,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:02,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:02,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:02,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:02,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-21 12:23:02,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:02,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:23:02,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:02,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:02,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:03,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:03,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:03,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:03,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:03,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:03,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:23:03,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:23:03,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:03,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:03,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:03,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:03,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:03,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:03,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:23:03,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:03,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-21 12:23:03,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000583856] [2020-09-21 12:23:03,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:03,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:23:03,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955955457] [2020-09-21 12:23:03,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:23:03,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:03,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:23:03,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:23:03,079 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 10 states. [2020-09-21 12:23:03,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:03,369 INFO L93 Difference]: Finished difference Result 88 states and 127 transitions. [2020-09-21 12:23:03,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:23:03,371 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-21 12:23:03,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:03,373 INFO L225 Difference]: With dead ends: 88 [2020-09-21 12:23:03,374 INFO L226 Difference]: Without dead ends: 53 [2020-09-21 12:23:03,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:23:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-21 12:23:03,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-21 12:23:03,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-21 12:23:03,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2020-09-21 12:23:03,395 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 54 [2020-09-21 12:23:03,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:03,395 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2020-09-21 12:23:03,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:23:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2020-09-21 12:23:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 12:23:03,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:03,400 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:23:03,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:23:03,401 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:03,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:03,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1252569501, now seen corresponding path program 1 times [2020-09-21 12:23:03,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:03,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533668379] [2020-09-21 12:23:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:03,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:03,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:03,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:03,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:04,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-21 12:23:04,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:23:04,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-21 12:23:04,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:04,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:23:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 12:23:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:23:04,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:04,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:04,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:04,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:04,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:04,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:23:04,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:04,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:04,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:05,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:05,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:05,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:05,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-21 12:23:05,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:23:05,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:23:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:23:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:23:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:23:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:05,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:05,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:05,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:05,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:06,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:23:06,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:23:06,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:06,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:23:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:23:06,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:23:06,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:06,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:06,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:06,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:06,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:06,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-21 12:23:06,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:06,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:06,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:06,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:23:06,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:06,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:06,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:06,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:06,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:06,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:23:06,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:23:06,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:06,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:06,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:06,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:06,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:06,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:23:06,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:06,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:06,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:06,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:06,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:06,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:06,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:06,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:23:06,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:06,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:23:06,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:06,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:06,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:06,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:23:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:07,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-21 12:23:07,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:23:07,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:07,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-21 12:23:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:07,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:07,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:07,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:07,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:23:07,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:07,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:23:07,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:07,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:07,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:07,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:07,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:07,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:07,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:23:07,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:07,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:07,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:07,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:07,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:07,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:07,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:07,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:23:07,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:07,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:07,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:07,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:07,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:07,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:07,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:07,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:07,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:07,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:07,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:07,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:08,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:08,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:08,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:08,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:08,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:08,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:23:08,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:08,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:08,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:23:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:08,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:08,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:08,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:08,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:08,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:08,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:08,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 24 proven. 47 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-09-21 12:23:08,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533668379] [2020-09-21 12:23:08,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:08,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:23:08,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998172717] [2020-09-21 12:23:08,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:23:08,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:08,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:23:08,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:23:08,060 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand 8 states. [2020-09-21 12:23:08,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:08,260 INFO L93 Difference]: Finished difference Result 103 states and 148 transitions. [2020-09-21 12:23:08,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:23:08,261 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-09-21 12:23:08,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:08,263 INFO L225 Difference]: With dead ends: 103 [2020-09-21 12:23:08,263 INFO L226 Difference]: Without dead ends: 56 [2020-09-21 12:23:08,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:23:08,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-21 12:23:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-09-21 12:23:08,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-21 12:23:08,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2020-09-21 12:23:08,288 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 94 [2020-09-21 12:23:08,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:08,288 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2020-09-21 12:23:08,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:23:08,289 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2020-09-21 12:23:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-21 12:23:08,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:08,291 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:23:08,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:23:08,291 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:08,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:08,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1156896337, now seen corresponding path program 2 times [2020-09-21 12:23:08,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:08,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203656881] [2020-09-21 12:23:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:08,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:08,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:08,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:08,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:09,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-21 12:23:09,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:23:09,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:23:09,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:09,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:23:09,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:23:09,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:23:09,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:09,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:09,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:09,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:09,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:09,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:23:09,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:09,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:09,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:09,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:09,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:09,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:09,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:10,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:10,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:23:10,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:23:10,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:10,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:10,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:23:10,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:10,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:23:10,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:10,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:10,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:10,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:11,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:23:11,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:11,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:11,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:11,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:23:11,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:11,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:23:11,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:11,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:11,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:11,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:11,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:11,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:23:11,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:11,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:11,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:11,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:11,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:11,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:11,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:11,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:11,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:11,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:11,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:11,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:11,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:11,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:11,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:11,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:23:11,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:11,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:11,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:11,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:11,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:11,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:11,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:23:11,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:11,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:23:11,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:11,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:23:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:11,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:11,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:11,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:11,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:23:11,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:11,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:11,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:11,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:11,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:11,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:11,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:11,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:11,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:11,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:11,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:11,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:11,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:11,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:11,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:11,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:11,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:11,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-21 12:23:11,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203656881] [2020-09-21 12:23:11,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:11,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:23:11,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579042167] [2020-09-21 12:23:11,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:23:11,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:11,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:23:11,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:23:11,563 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand 9 states. [2020-09-21 12:23:11,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:11,762 INFO L93 Difference]: Finished difference Result 74 states and 112 transitions. [2020-09-21 12:23:11,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:23:11,763 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-09-21 12:23:11,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:11,766 INFO L225 Difference]: With dead ends: 74 [2020-09-21 12:23:11,766 INFO L226 Difference]: Without dead ends: 70 [2020-09-21 12:23:11,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:23:11,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-21 12:23:11,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-09-21 12:23:11,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-21 12:23:11,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2020-09-21 12:23:11,786 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 68 [2020-09-21 12:23:11,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:11,786 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2020-09-21 12:23:11,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:23:11,787 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2020-09-21 12:23:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-21 12:23:11,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:11,789 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:23:11,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:23:11,790 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:11,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:11,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1408907040, now seen corresponding path program 3 times [2020-09-21 12:23:11,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:11,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809474247] [2020-09-21 12:23:11,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:11,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:12,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-21 12:23:12,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:23:12,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:23:12,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:23:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 12:23:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:23:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:12,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:12,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:12,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:12,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:12,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:23:12,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:12,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:12,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:13,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-21 12:23:13,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-21 12:23:13,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:23:13,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:23:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:23:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:23:13,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:13,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:13,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:14,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-21 12:23:14,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:23:14,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:23:14,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:14,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:23:14,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:23:14,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:23:14,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:14,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:15,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:15,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-21 12:23:15,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:23:15,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:15,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:15,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:15,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:15,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:23:15,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:23:15,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:15,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:15,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:15,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:15,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:15,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:23:15,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:15,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:15,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:15,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:15,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:15,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:15,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:15,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:15,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-21 12:23:15,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:23:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:15,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:15,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:15,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:15,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:15,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:15,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:23:15,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:23:15,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:15,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:15,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:15,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:15,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:15,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:15,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:15,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:15,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:15,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 12:23:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:15,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:15,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:15,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:15,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:23:15,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:15,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:15,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 12:23:15,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:15,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:15,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:15,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:15,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:15,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:15,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:23:15,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:15,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:15,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:15,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:15,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:15,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:15,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:15,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:15,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:15,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:15,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:15,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 30 proven. 39 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-09-21 12:23:15,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809474247] [2020-09-21 12:23:15,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:15,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:23:15,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628890909] [2020-09-21 12:23:15,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:23:15,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:15,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:23:15,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:23:15,451 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand 8 states. [2020-09-21 12:23:15,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:15,657 INFO L93 Difference]: Finished difference Result 132 states and 236 transitions. [2020-09-21 12:23:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:23:15,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-09-21 12:23:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:15,660 INFO L225 Difference]: With dead ends: 132 [2020-09-21 12:23:15,660 INFO L226 Difference]: Without dead ends: 74 [2020-09-21 12:23:15,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:23:15,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-21 12:23:15,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-09-21 12:23:15,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-21 12:23:15,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 104 transitions. [2020-09-21 12:23:15,672 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 104 transitions. Word has length 81 [2020-09-21 12:23:15,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:15,673 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 104 transitions. [2020-09-21 12:23:15,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:23:15,673 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 104 transitions. [2020-09-21 12:23:15,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-21 12:23:15,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:15,676 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 14, 14, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:23:15,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:23:15,676 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:15,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:15,676 INFO L82 PathProgramCache]: Analyzing trace with hash -359906218, now seen corresponding path program 4 times [2020-09-21 12:23:15,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:15,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616156443] [2020-09-21 12:23:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:15,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:16,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:16,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:16,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:16,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-09-21 12:23:16,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:23:16,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:23:16,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:16,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:23:16,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:23:16,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:23:16,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:16,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:16,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:16,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:16,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:16,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:23:16,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:16,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:16,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:16,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:16,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:16,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:17,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-09-21 12:23:17,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-21 12:23:17,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:23:17,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:23:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:23:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-21 12:23:17,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:17,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:17,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:18,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-21 12:23:18,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:23:18,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:23:18,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:23:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:23:18,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:23:18,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:18,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:19,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:19,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:19,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:19,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:23:19,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:23:19,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:23:19,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:23:19,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:19,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:19,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:19,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:19,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:19,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:23:19,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:19,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:19,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:19,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:19,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:19,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:19,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:19,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:19,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:19,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:19,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:19,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:19,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:19,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:19,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:19,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:19,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:19,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:19,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:19,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:19,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:19,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:19,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:19,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:23:19,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:23:19,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:20,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:23:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:20,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:21,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:23:21,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:23:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:21,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:23:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:21,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:21,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:22,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:23:22,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:23:22,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:23:22,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:23:22,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:22,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:22,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:22,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:22,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:23:22,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:22,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:22,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:22,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:22,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:22,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:22,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:22,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:22,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:22,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:22,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:22,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:22,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:22,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:22,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:22,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:22,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:22,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:22,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:22,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:22,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:23:22,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:23:22,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:22,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:23:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:22,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:22,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:22,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:23:22,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:22,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:22,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:22,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:22,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:22,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:22,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:22,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:22,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:22,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:22,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:22,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:22,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:22,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:22,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-21 12:23:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:23,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:23,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-21 12:23:23,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:23:23,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:23,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:23,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:23:23,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:23:23,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-21 12:23:23,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:23,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:23,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:23,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:24,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:24,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:23:24,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:24,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:23:24,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:24,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:24,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:23:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:24,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:24,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:24,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:24,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:24,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:24,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:23:24,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:24,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:24,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:24,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:24,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:24,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:24,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:24,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:24,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:24,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:24,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:24,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:24,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:24,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:24,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:24,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:24,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:24,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:23:24,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:24,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:24,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:24,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:24,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:24,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:24,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:24,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:24,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:24,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:24,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:23:24,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:23:24,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:24,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:23:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:24,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:24,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:24,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:24,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:24,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:25,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:25,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:25,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:23:25,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:23:25,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:23:25,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:23:25,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:25,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:25,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:23:25,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:25,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:23:25,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 12:23:25,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:25,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:25,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:25,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:25,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:25,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:23:25,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:25,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:25,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:25,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:25,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:25,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:25,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:25,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:25,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:25,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:25,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:25,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:25,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:25,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:25,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:25,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:25,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:25,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:25,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:25,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:25,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:25,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:25,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:25,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:25,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:25,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:25,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:25,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:23:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:25,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:25,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:25,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:25,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:25,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:25,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:25,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-21 12:23:25,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:25,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:25,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:25,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:23:25,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:25,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:25,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:25,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:25,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:25,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:23:25,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:23:25,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:25,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:25,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:25,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:25,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:25,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:25,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:23:25,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 304 proven. 286 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2020-09-21 12:23:25,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616156443] [2020-09-21 12:23:25,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:25,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 12:23:25,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450009518] [2020-09-21 12:23:25,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 12:23:25,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:25,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 12:23:25,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:23:25,769 INFO L87 Difference]: Start difference. First operand 69 states and 104 transitions. Second operand 16 states. [2020-09-21 12:23:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:26,388 INFO L93 Difference]: Finished difference Result 173 states and 323 transitions. [2020-09-21 12:23:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-21 12:23:26,389 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 218 [2020-09-21 12:23:26,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:26,393 INFO L225 Difference]: With dead ends: 173 [2020-09-21 12:23:26,393 INFO L226 Difference]: Without dead ends: 98 [2020-09-21 12:23:26,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-09-21 12:23:26,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-21 12:23:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2020-09-21 12:23:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-21 12:23:26,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 125 transitions. [2020-09-21 12:23:26,407 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 125 transitions. Word has length 218 [2020-09-21 12:23:26,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:26,408 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 125 transitions. [2020-09-21 12:23:26,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 12:23:26,408 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 125 transitions. [2020-09-21 12:23:26,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-21 12:23:26,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:26,410 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:23:26,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:23:26,410 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:26,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:26,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1540036056, now seen corresponding path program 5 times [2020-09-21 12:23:26,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:26,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321493707] [2020-09-21 12:23:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:26,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:26,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:26,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:27,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:27,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-21 12:23:27,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:23:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:23:27,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:23:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:23:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:23:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:27,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:27,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:27,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:27,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:27,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:27,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:23:27,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:27,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:27,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:27,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:27,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:27,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:28,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:28,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:28,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:28,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-21 12:23:28,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:23:28,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:28,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:23:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-21 12:23:28,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:28,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:28,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:28,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:28,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:23:28,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:28,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 12:23:28,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:23:28,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:28,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:28,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:28,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:28,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:23:28,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:28,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:23:28,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:28,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:28,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:28,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:28,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:28,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:28,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:28,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:28,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:28,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:23:28,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:28,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:28,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:28,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:28,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:28,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:28,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:28,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:28,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:28,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:28,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:28,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:28,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:28,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:28,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:28,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:28,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:28,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:28,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:28,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:28,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:28,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:28,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:28,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:28,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:23:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:28,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:28,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:28,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:28,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:28,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:23:28,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:28,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:28,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:28,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:28,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:28,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:28,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:28,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:28,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:28,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:28,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:28,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:28,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:28,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:28,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:28,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:28,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:28,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:28,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:28,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:28,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 12:23:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:28,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:28,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:28,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:29,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:29,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:23:29,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:29,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:23:29,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:29,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:23:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:23:29,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:29,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:29,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:29,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:29,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:29,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:29,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:23:29,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:29,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:29,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:29,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:29,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:29,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:29,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:29,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:29,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:29,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:29,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:23:29,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:29,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:29,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:29,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:29,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:29,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:29,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:29,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:29,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:29,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:29,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:29,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:29,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:29,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:29,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:23:29,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:23:29,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 67 proven. 19 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-09-21 12:23:29,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321493707] [2020-09-21 12:23:29,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:29,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:23:29,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313856824] [2020-09-21 12:23:29,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:23:29,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:29,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:23:29,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:23:29,815 INFO L87 Difference]: Start difference. First operand 89 states and 125 transitions. Second operand 8 states. [2020-09-21 12:23:30,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:30,028 INFO L93 Difference]: Finished difference Result 119 states and 181 transitions. [2020-09-21 12:23:30,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:23:30,029 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-09-21 12:23:30,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:30,031 INFO L225 Difference]: With dead ends: 119 [2020-09-21 12:23:30,031 INFO L226 Difference]: Without dead ends: 115 [2020-09-21 12:23:30,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:23:30,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-21 12:23:30,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 106. [2020-09-21 12:23:30,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-21 12:23:30,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 159 transitions. [2020-09-21 12:23:30,043 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 159 transitions. Word has length 109 [2020-09-21 12:23:30,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:30,044 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 159 transitions. [2020-09-21 12:23:30,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:23:30,044 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 159 transitions. [2020-09-21 12:23:30,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-21 12:23:30,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:30,047 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:23:30,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:23:30,047 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:30,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:30,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2011292190, now seen corresponding path program 6 times [2020-09-21 12:23:30,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:30,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014596544] [2020-09-21 12:23:30,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:30,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:30,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:30,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:30,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:30,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:30,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:30,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:31,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:31,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:23:31,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-21 12:23:31,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:23:31,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:31,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 12:23:31,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:23:31,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:23:31,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:31,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:31,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:31,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:31,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:31,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:31,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:23:31,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:31,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:31,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:31,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:31,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:31,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:31,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:31,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:31,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:31,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:31,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:31,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:31,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:31,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:31,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:31,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:32,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:32,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-21 12:23:32,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-21 12:23:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:23:32,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 12:23:32,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:23:32,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-21 12:23:32,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:32,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:32,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:32,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:32,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:32,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:32,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:32,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:32,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:32,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:33,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:33,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:23:33,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-21 12:23:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:33,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:23:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 12:23:33,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:33,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:33,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:33,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:33,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:33,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:34,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:34,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:23:34,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:23:34,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:23:34,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:34,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:23:34,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:34,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:23:34,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:34,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:34,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:34,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:34,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:34,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:34,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:23:34,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:34,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:34,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:34,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:34,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:34,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:34,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:34,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:34,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:34,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:34,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:34,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:34,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:34,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:34,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:23:34,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:34,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:34,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:34,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:34,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:34,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:34,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:34,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:34,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:23:34,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:34,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:23:34,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:34,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:23:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:34,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:34,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:34,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:34,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:34,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:23:34,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:34,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:34,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:34,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:34,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:34,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:34,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:34,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:34,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:34,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:34,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:34,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:34,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:34,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:34,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:34,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:34,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:34,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:34,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:34,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:34,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:34,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:34,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:34,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:34,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 12:23:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:34,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:34,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:34,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:34,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:34,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:34,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:35,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:35,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:23:35,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:23:35,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:35,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:23:35,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:35,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:35,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:35,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:35,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:23:35,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:35,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 12:23:35,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 12:23:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:35,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:35,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:35,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:35,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:35,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:35,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:23:35,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:35,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:35,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:35,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:35,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:35,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:35,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:23:35,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:35,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:35,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:35,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:35,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:35,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:35,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:35,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:35,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:23:35,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:35,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:35,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:35,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:35,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:35,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:35,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:35,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:35,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:35,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:23:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:35,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:35,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:35,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:35,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:35,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-21 12:23:35,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:23:35,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:35,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:35,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:35,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:35,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:35,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:23:35,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:23:35,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:35,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:35,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:35,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:35,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:35,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:35,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:23:35,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:35,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 101 proven. 104 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2020-09-21 12:23:35,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014596544] [2020-09-21 12:23:35,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:35,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 12:23:35,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622706326] [2020-09-21 12:23:35,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 12:23:35,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:35,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 12:23:35,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:23:35,904 INFO L87 Difference]: Start difference. First operand 106 states and 159 transitions. Second operand 12 states. [2020-09-21 12:23:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:36,264 INFO L93 Difference]: Finished difference Result 230 states and 411 transitions. [2020-09-21 12:23:36,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:23:36,265 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-09-21 12:23:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:36,269 INFO L225 Difference]: With dead ends: 230 [2020-09-21 12:23:36,269 INFO L226 Difference]: Without dead ends: 137 [2020-09-21 12:23:36,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-09-21 12:23:36,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-21 12:23:36,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 116. [2020-09-21 12:23:36,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-21 12:23:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 175 transitions. [2020-09-21 12:23:36,297 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 175 transitions. Word has length 136 [2020-09-21 12:23:36,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:36,299 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 175 transitions. [2020-09-21 12:23:36,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 12:23:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 175 transitions. [2020-09-21 12:23:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-09-21 12:23:36,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:36,306 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 25, 25, 23, 22, 15, 15, 15, 15, 15, 15, 15, 12, 12, 12, 12, 12, 12, 12, 10, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:23:36,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 12:23:36,306 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:36,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:36,308 INFO L82 PathProgramCache]: Analyzing trace with hash 246228842, now seen corresponding path program 7 times [2020-09-21 12:23:36,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:36,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187776873] [2020-09-21 12:23:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:36,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:36,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:36,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:36,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:36,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:37,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:37,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:37,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-09-21 12:23:37,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:23:37,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-09-21 12:23:37,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:37,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:23:37,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-21 12:23:37,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-21 12:23:37,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:37,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:37,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:37,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:37,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:37,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:37,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:23:37,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:37,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:37,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:37,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:37,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:37,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:37,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:38,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:38,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking...